The following are the changes from calc version 2.11.5t4.1 to date:

    Updated dependency rules in Makefiles.

    NOTE: -DSRC, as used in 2.11.5t4.1 was renamed -DCALC_SRC
    in a later version.

    Calc include files use #include "foo.h" to include other calc
    header files if -DCALC_SRC.  Otherwise they use <calc/foo.h>.
    The -DCALC_SRC symbol is defined by default in calc's Makefile
    and so it uses the header files from within the calc src tree.
    If an external non-calc program includes an installed calc
    header file (from under /usr/include), and it does NOT define
    CALC_SRC, then it will obtain the calc header files from the
    correct system location (such as /usr/include/calc/foo.h).

    Added calc builtin function: version() which returns the calc
    version string.

    Added subject requirements for the calc-tester-request and
    calc-bugs-mail EMail aliases.  See:

    	http://www.isthe.com/chongo/tech/comp/calc/email.html

    for details.

    Corrected a bug that incorrectly set the default calc path
    back in version 2.11.5t4.  The default CALCPATH is now:

	.:./cal:~/.cal:/usr/share/calc:/usr/share/calc/custom

    and the default CALCRC is now:

	/usr/share/calc/startup:~/.calcrc:./.calcinit

    This fixes the missing bindings error and it places the calc
    resource files into the default path.

    If you are using the GNU readline then the Makefile recommends that
    you link with the ncurses library.

    Applied Makefile, cscript/Makefile and custom/Makefile patches to
    fix install mode problems, to deal with sorting and dates in I18n
    environments (such as Japanese), to fix some problems with calc.spec
    and to fix the cscript #! header lines.  Thanks goes to KAWAMURA Masao
    (kawamura at mlb.co.jp) for the bug report and patch!

    Fixed headers on fproduct.calc powerterm.calc 4dsphere.calc so
    that they are correcly changed on installation.

    Added ${GREP} Makefile variable.

    The top level Makefile now sets LANG=C and passes it down to
    lower level Makefiles.

    Updated URLs in cal/lucas.cal comments.

    Now shipping calc.spec, inst_files, spec-template and Makefile.linux
    with the standard calc source distribution.  Note that the standard
    Makefile has not changed.  The Makefile.linux only in minor ways
    needed to build calc rpms.

    Added $T Makefile variable, top level directory under which calc
    will be installed.  The calc install is performed under $T, the
    calc build is performed under /.  The purpose for $T is to allow
    someone to install calc somewhere other than into the system area.
    For examplewhen forming the calc rpm, the Makefile is called with
    T=$RPM_BUILD_ROOT.  If $T is empty, calc is installed under /.

    Removed all echo_XXX rules except for echo_inst_files from lower
    level makefile.  The calc.spec will use a make install rule
    with T=$RPM_BUILD_ROOT.

    Updated LIBRARY file with instructions related to -DCALC_SRC,
    the new default include file locatin and -lcustcalc.


The following are the changes from calc version 2.11.5t3 to 2.11.5t4:

    The Makefile will now send both stdout and sterr to /dev/null
    when compiling hsrc intermeriates.

    The config("verbose_quit") value was restored to a default
    value of FALSE.

    Added the cscript:

	powerterm [base_limit] value

    to write the value as the sum (or difference) of powers <= base_limit
    where base_limit by default is 10000.

    Applied a bug fix by Dr.D.J.Picton <dave at aps5.ph.bham.ac.uk>
    to have help with no args print the default help file.

    Renamed lavarand to LavaRnd.

    Added rules to build a calc rpm.

    All installed files are first formed as foo.new, and then moved
    into place as foo via a atomic rename.

    During installation, only files that are different are installed.
    If the built file and the installed file are the same, no
    installation is performed.

    Calc has new default installation locations:

    Makefile var   old location			      new location
    ------------   ------------			      ------------
    TOPDIR	   /usr/local/lib		        <<no longer used>>
    BINDIR	   /usr/local/bin		      /usr/bin
    SHAREDIR	      <<not set>>		      /usr/share
    INCDIR	   /usr/local/include		      /usr/include
    LIBDIR	   /usr/local/lib/calc		      /usr/lib
    CSHAREDIR	      <<not set>>		      /usr/share/calc
    HELPDIR	   /usr/local/lib/calc/help           /usr/share/calc/help
    INCDIRCALC	   /usr/local/include/calc	      /usr/include/calc
    CUSTOMLIBDIR   /usr/local/lib/calc/custom	      /usr/share/calc/custom
    CUSTOMHELPDIR  /usr/local/lib/calc/help/custhelp  /usr/share/calc/custhelp
    CUSTOMINCDIR     <<not set>>		      /usr/include/calc/custom
    SCRIPTDIR	   /usr/local/bin/cscript	      /usr/bin/cscript
    MANDIR	     <<not set>>		      /usr/share/man/man1
    CATDIR	     <<not set>>		        <<not set>>

    The Makefile variable ${TOPDIR} is no longer used.  In some places
    it has been replaced by a new Makefile variable ${SHAREDIR}.  Some
    of the old TOPDIR functionality has beenn replaced by ${CSHAREDIR}.

    The install rules no longer remove old obsolete files.  We assume
    that these old files have long since vanished!  :-)

    Reduced the amount of output when doing a make all where nothing
    needs to be made.

    Reduced the amount of output when doing a make install where nothing
    needs to be installed.

    If you install using the new default locations, you can remove
    old calc files installed in the old default location by doing:

	make olduninstall


The following are the changes from calc version 2.11.5t2 to 2.11.5t2.1:

    Fixed a bug, reported by Ernest Bowen <ernie at turing dot
    une dot edu dot au> that caused command lines to be echoed in
    interactive mode.  Fixed a bug that sometimes left the terminal
    in a non-echoing state when calc exited.

    Renamed error codes E_FGETWORD1 and E_FGETWORD2 symbols to
    E_FGETFIELD1 and E_FGETFIELD2.

    Made a minor format change to the top of the calc man page.

    The findid() function in file.c 2nd argument changed.  The argument
    is now mostly a writable flag.  This function now finds the file
    I/O structure for the specified file id, and verifies that
    it is opened in the required manner (0 for reading or 1 for writing).
    If the 2nd argument is -1, then no open checks are made at all and
    NULL is then returned if the id represents a closed file.

    The calc builtin function, fopen(), now allows one to specify
    opening files in binary modes.  On POSIX / Linux / Un*x-like systems,
    text file is the same as a binary file and so 'b' to an fopen has
    no effect and is ignored.  However on systems such as MS Windoz
    the 'b' / binary mode has meaning.  See 'help fopen' for details.

    On systems (such as MS Windoz), calc will produce a different error
    message when it attempts to open /dev/tty.  This will condition
    will occur in things like calc scripts when they switch from ``batch
    processing'' commands from and want to start interactive mode.

    Regression tests fopen in binary mode in a few places where a
    difference between text and binary string lengths matter.
    The intfile calc resource file also uses binary mode.

    Changed the rand() builtin and its related functions srand() and
    randbit() to use the Subtractive 100 generator instead of the
    additive 55 generator.  This generator as improved random properties.
    As a result, of this change, the values produced by rand(),
    rand() and randbit() are now different.

    Updated regression tests for new rand() and randbit() output.

    Applied a bug fix from Ernest Bowen <ernie at turing dot une dot
    edu dot au> dealing with one-line "static" declaration like:

    	static a = 1, b;

    Added regression test 8310 to test for the static bug fix.


The following are the changes from calc version 2.11.5t0 to 2.11.5t1.1:

    Fixed a compile problem with Linux 2.4 / Debian.  Thanks goes
    to Martin Buck <m at rtin-buck dot de> for help with this issue.

    Fixed a bug in how L64_FORMAT (it determined if "%ld" or "%lld"
    is appropriate for printing of 64 bit long longs) was determined.
    Thanks goes to Martin Buck <m at rtin-buck dot de> for reporting
    this bug and testing the fix.

    An effort was made to make calc easier to build under Windoz
    using the Cygwin project (http://sources.redhat.com/cygwin/).
    Thanks to the work of Thomas Jones-Low (tjoneslo and softstart
    dot com), a number of #if defined(_WIN32)'s have been added
    to calc source.  These changes should not effect Windoz
    free system such as GNU/Linux, Solaris, POSIX-like, etc ...

    Added windll.h to deal with Windoz related DLL issues.
    Using the convention of 'extern DLL' instead of 'DLL extern'
    to deal with symbols that export to or import from a DLL.

    Added HAVE_MALLOC_H, HAVE_STDLIB_H, HAVE_STRING_H, HAVE_TIMES_H,
    HAVE_SYS_TIMES_H, HAVE_TIME_H, HAVE_SYS_TIME_H, HAVE_UNISTD_H
    and HAVE_URANDOM to the Makefile.  If these symcols are empty,
    then the Makefile looks for the appropriate system include file.
    If they are YES, then the Makefile will assume they exist.
    If they are NO, then the Makefile will assume they do not exist.

    Changed HAVE_URANDOM to match the empty, YES, NO values.
    If HAVE_URANDOM is empty, then the Makefile will look for /dev/urandom.
    If HAVE_URANDOM is YES, then the Makefile will assume /dev/urandom exists.
    If HAVE_URANDOM is NO, then the Makefile will assume /dev/urandom does
    not exist.

    If TERMCONTROL is -DUSE_WIN32, then the Windoz terminal control
    (no TERMIOS, no TERMIO, no SGTTY) will be assumed.

    Added a win32_hsrc Makefile rule to create hsrc files appropriate
    for a Windoz system using Cygwin gcc environment.  Added win32.mkdef
    which is used by the win32_hsrc rule to set the Windoz specific
    Makefile values to build hsrc files.  The hsrc files are built
    under the win32 directory.

    Added FPOS_POS_BITS, OFF_T_BITS, DEV_BITS and INODE_BITS Makefile
    symbiols to allow one to force the size of a file position, file
    offset, dev and inode value.  Leaving these values blank will
    Makefile to determine their size.

    Fixed a bug in the way file offsets, device and inode values are copied.

    Added chi.cal for a initial stab as a Chi^2 function.  The chi_prob()
    function does not work well with odd degrees of freedom, however.

    Added big 3 to config("resource_debug").  Calc resource file scripts
    check for config("resource_debug") & 8 prior to printing internal debug
    statements.  Thus by default they do not print them.

    Added intfile.cal as a calc resource file script:

	file2be(filename)

	    Read filename and return an integer that is built from the
	    octets in that file in Big Endian order.  The first octets
	    of the file become the most significant bits of the integer.

	file2le(filename)

	    Read filename and return an integer that is built from the
	    octets in that file in Little Endian order.  The first octets
	    of the file become the most significant bits of the integer.

	be2file(v, filename)

	    Write the absolute value of v into filename in Big Endian order.
	    The v argument must be on integer.  The most significant bits
	    of the integer become the first octets of the file.

	le2file(v, filename)

	    Write the absolute value of v into filename in Little Endian order.
	    The v argument must be on integer.  The least significant bits
	    of the integer become the last octets of the file.

    Added the following help aliases:

	copy	blkcpy
	read	command
	write	command
	quit	command
	exit	command
	abort	command
	cd	command
	show	command

    Added the cscript:

	fproduct filename term ...

    to write the big Endian product of terms to a filename.  Use - for stdout.

    Fixed calc path in help/script.

    Added read-only parameter, config("windows") to indicate if the system
    is MS windowz WIN32 like system.

    Configuration values that used to return "true" or "false" now return
    1 (a true value) or 0 (a false value).  Thus one can do:

    	if (config("tab")) { ... } else { ... }

    The configuration values that now return 1 or 0 are:

	config("tilde")
	config("tab")
	config("leadzero")
	config("blkverbose")
	config("verbose_quit")
	config("windows")

    Now shipping a win32 sub-directory that contains hsrc .h files
    that have been attempted to be built for windoz.


The following are the changes from calc version 2.11.4t1 to 2.11.4t2:

    Added missing test8600.cal test file.

    Fixes cscript files to deal with the -S flag being replaced by
    -f and possibly other flags.

    Added regression tests for builtin functions bernoulli, catalan,
    euler, freeeuler, and sleep.  Added non-base 10 regression tests
    for digit, digits and places.

    The bernoulli.cal script now just calls the bernoulli() builtin
    function.  It remains for backward compatibility.

    The Makefile now builds have_fpos_pos.h to determine if the
    a non-scalar FILEPOS has a __pos stucture element.  If it does,
    the FILEPOS_BITS is taken to be the size of just the __pos element.

    Misc fixes related to non-scalar (e.g., structure) FILEPOS.  Fixed
    a compile problems where non-scalar FILEPOS were incorrectly assigned.

    Fixed make depend rule.

    Return an error on malloc / realloc failures for bernoulli and
    euler functions.

    Added MAKEFILE_REV make variable to help determine Makefile version.
    Fixed the way the env rule reports Makefile values.


The following are the changes from calc version 2.11.3t0 to 2.11.4:

    Increased the maximum number of args for functions from 100 to 1024.
    Increased calc's internal evaluation stack from 1024 to 2048 args.
    Added test8600.cal to the regression suite to test these new limits.

    Updated and fixed misc typos in calc/README.

    Clarified in the COPYING file that ALL calc source files, both
    LGPL covered and exceptions to the LGPL files may be freely used
    and distributed.

    Added help files or updated for: bernoulli, calc_tty, catalan,
    digit, digits, euler, freeeuler, places and sleep.

    A collection of 18 patches from Ernest Bowen
    <ernie at turing dot une dot edu dot au>:

    (1)  A new flag -f has been defined which has the effect of a read
    command without the need to terminate the file name with a semicolon
    or newline.  Thus:

	    calc "read alpha; read beta;"

    may be replaced by:

	    calc -f alpha -f beta

    Quotations marks are recognized in a command like

	    calc -f 'alpha beta'

    in which the name of the file to be read includes a space.

    (2) Flags are interpreted even if they are in a string, as in:

	    calc "-q -i define f(x) = x^2;"

    which has the effect of:

	    calc -q -i "define f(x) = x^2;"

    To achieve this, the use of getopts() in calc.c has been dropped in
    favour of direct reading of the arguments produced by the shell.
    In effect, until a "--" or "-s" or a calc command (recognized
    by not starting with '-') is encountered, the quotation signs in
    command lines like the above example are ignored.  Dropping getopts()
    permits calc to specify completely the syntax rules calc will apply
    to whatever it is given by the shell being used.

    (3) For executable script (also called interpreter) files with first
    line starting with "#!", the starting of options with -S has been
    replaced by ending the options with -f.  For example, the first line:

	    #! full_pathname_for_calc -S -q -i

    is to be replaced by:

	    #! full_pathname_for_calc -q -i -f

    Thus, if the pathname is /usr/bin/calc and myfile contains:

	    #!/usr/bin/calc -q -i -f
	    global deg = pi()/180;
	    define Sin(x) = sin(x * deg);

    and has been made executable by:

	    chmod u+x myfile

    myfile would be like a version of calc that ignored any startup
    files and had an already defined global variable deg and a function
    Sin(x) which will return an approximation to the sine of x degrees.
    The invocation of myfile may be followed by other options (since
    the first line in the script has only flagged options) and/or calc
    commands as in:

	    ./myfile -c read alpha '; define f(x) = Sin(x)^2'

    (The quotation marks avoid shell interpretation of the semicolon and
    parentheses.)

    (4) The old -S syntax for executable scripts implied the -s flag so that
    arguments in an invocation like

	    ./myfile alpha beta

    are passed to calc; in this example argv(0) = 'alpha', argv(1) =
    'beta'.  This has been changed in two ways: an explicit -s is required
    in the first line of the script and then the arguments passed in the
    above example are argv(0) = 'myfile', argv(1) = 'alpha', argv(1) = 'beta'.

    In an ordinary command line, "-s" indicates that the shell words
    after the one in which "-s" occurred are to be passed as arguments
    rather than commands or options.  For example:

	    calc "-q -s A = 27;" alpha beta

    invokes calc with the q-flag set, one command "A = 27;", and two arguments.

    (5) Piping to calc may be followed by calc becoming interactive.
    This should occur if there is no -p flag but -i is specified, e.g.:

	    cat beta | calc -i -f alpha

    which will do essentially the same as:

	    calc -i -f alpha -f beta

    (6) The read and help commands have been  changed so that several
    files may be referred to in succession by separating their names
    by whitespace.  For example:

	    > read alpha beta gamma;

    does essentially the same as:

	    > read alpha; read beta; read gamma;

    This is convenient for commands like:

	    calc read file?.cal

    when file?.cal expands to something like file1.cal file2.cal file3.cal:

	    myfiles='alpha beta gamma'
	    calc read $myfiles

    or for C-shell users:

	    set myfiles=(alpha beta gamma)
	    calc read $myfiles


    (7) The -once option for read has been extended to -f.  For example,

	    calc -f -once alpha

    will ignore alpha if alpha has been read in the startup files.  In a
    multiple read statement, -once applies only to the next named file.
    For example

	    > read -once alpha beta -once gamma;

    will read alpha and gamma only if they have not already been read,
    but in any case, will read beta.

    (8) A fault in the programming for the cd command has been corrected
    so that specifying a directory by a string constant will work.  E.g:

	    > cd "my work"

    should work if the current directory has a directory with name "my work".

    (9) new functions bernoulli(n) and euler(n) have been defined to
    return the Bernoulli number and the Euler number with index n.
    After evaluation for an even positive n, this value and these for
    smaller positive even n are stored in a table from which the values
    can be reread when required.  The memory used for the stored values
    can be freed by calling the function freebernoulli() or freeeuler().

    The function catalan(n) returns the catalan number with index n.
    This is evaluated using essentially comb(2*n, n)/(n+1).

    (10) A function sleep(n) has been defined which for positive n calls
    the system function sleep(n) if n is an integer, usleep(n) for other
    real n.  This suspends operation for n seconds and returns the null
    value except when n is integral and the sleep is interrupted by a
    SIGINT, in which case the remaining number of seconds is returned.

    (11) The effect of config("trace", 8) which displays opcodes of
    functions as they are successfully defined has been restricted to
    functions defioed with explicit use of "define".  Thus, it has been
    deactivated for the ephemeral functions used for evaluation of calc
    command lines or eval() functions.

    (12) The functions digit(), digits(), places() have been extended to
    admit an optional additional argument for an integral greater-than-one
    base which defaults to 10.  There is now no builtin limit on the
    size of n in digit(x, n, b), for example, digit(1/7, -1e100) which
    would not work before can now be handled.

    (13) The function, digits(x), which returns the number of decimal
    digits in the integer part of x has been changed so that if abs(x) <
    1, it returns 0 rather than 1.  This also now applies to digits(x,b).

    (14) Some programming in value.c has been improved.  In particular,
    several occurrences of:

	    vres->v_type = v1->v_type;
	    ...
	    if (v1->v_type < 0) {
		    copyvalue(v1, vres);
		    return;
	    }

    have been replaced by code that achieves exactly the same result:

	    vres->v_type = v1->v_type;
	    ...
	    if (v1->v_type < 0)
		    return;

    (15) Some operations and functions involving null-valued arguments
    have been changed so that they return null-value rather than "bad
    argument-type" error-value.  E.g. null() << 2 is now null-valued
    rather than a "bad argument for <<" error-value.

    (16) "global" and "local" may now be used in expressions.  For example:

	    > for (local i = 0; i < 5; i++) print i^2;

    is now acceptable, as is:

	    > define f(x = global x) = (global x = x)^2;

    which breaks wise programming rules and would probably better be handled
    by something like:

	    > global x
	    > define f(t = x) = (x = t)^2;

    Both definitions produce the same code for f.  For non-null t, f(t)
    returns t^2 and assigns the value of t to x;  f() and f(t) with null t
    return x^2.

    Within expressions, "global" and "local" are to be followed by just one
    identifier.  In "(global a = 2, b)" the comma is a comma-operator; the
    global variable a is created if necessary and assigned the value 2, the
    variable b has to already exist.   The statement "global a = 2, b" is
    a declaration of global variables and creates both a and b if they
    don't already exist.

    (18) In a config object, several components have been changed from
    long to LEN so that they will now be 32 bit integers for machines with
    either 32 or 64-bit longs.  In setting such components, the arguments
    are now to less than 2^31.  Before this change:

	    > config("mul2", 2^32 + 3)

    would be accepted on a 64-bit machine but result in the same as:

	    > config("mul2", 3)


The following are the changes from calc version 2.11.2t0 to 2.11.2t1.0:

    Fixed a bug whereby help files are not displayed correctly on
    systems such as NetBSD 1.4.1.  Thanks to a fix from Jakob Naumann.

    Changed EMail addresses to use asthe.com.  Changed URLs to use
    www.isthe.com.  NOTE: The EMail address uses 'asthe' and the web
    site URL uses 'isthe'.

    Using calc-bugs at asthe dot com for calc bug reports,
    calc-contrib at asthe dot com for calc contributions,
    calc-tester-request at asthe dot com for requests to join calc-tester and
    calc-tester at asthe dot com for the calc tester mailing list.

    Replaced explicit EMail addresses found this file with the <user at
    site dot domain> notation to reduce the potential for those folks
    to be spammed.

    The Makefile attempts to detect the existence of /dev/urandom with -e
    instead of the less portable -c.

    Misc Makefile fixes.


The following are the changes from calc version 2.11.1t3 to 2.11.1t4:

    Removed non-portable strerror() tests (3715, 3724 and 3728) from
    calc/regress.cal.

    Fixed missing strdup() from func.c problem.

    Fixed a problem that would have come up on a very long #! command line
    if the system permitted it.


The following are the changes from calc version 2.11.1 to 2.11.1t2.2:

    Placed calc under version 2.1 of the GNU Lesser General Public License.

	The calc commands:

	    help copyright
	    help copying
	    help copying-lgpl

	should display the generic calc copyright as well as the contents
	of the COPYING and COPYING-LGPL files.

	Those files contain information about the calc's GNU Lesser General
	Public License, and in particular the conditions under which you
	are allowed to change it and/or distribute copies of it.

    Removed the lint facility from the Makefile.  Eliminated Makefile
    variables: ${LCFLAGS}, ${LINT}, ${LINTLIB} and ${LINTFLAGS}.
    Removed the lint.sed file.

    Cleaned up help display system.  Help file lines that begin with
    '##' are not displayed.

    Calc source and documentation now uses the the these terms:

	*.cal files	calc resource file
	*.a files	calc binary link library
	#! files	calc shell script

    Renamed 'help stdlib' to 'help resource'.	The 'help stdlib' is
    aliased to 'help resource' for ard compatibility.

    Renamed config("lib_debug") to config("resource_debug").
    The config("lib_debug") will have the same effect as
    config("resource_debug") for backward compatibility.

    Renamed the source sub-directory lib to cal.  The default $CALCPATH
    now uses ./cal:~/cal (instead of ./lib:~/lib).  Changed LIB_PASSDOWN
    Makefile variable to CAL_PASSDOWN.

    Fixed misc compile warnings and bugs.

    Fixed problem of incorrect paths in the formation of installed
    calc shell scripts.

    Changed the recommended Comqaq cc compile to be -std0 -fast -O4 -static.

    Fixed a problem related to asking for help for a non-existent file.

    Added ./.calcinit to the default calcrc.

    Added cscript/README and help cscript to document the calc shell
    script supplied with calc.


The following are the changes from calc version 2.11.0t10 to 2.11.0t11:

    Misc code cleanup.	Removed dead code.  Removed trailing whitespace.
    Fixed whitespace to make the best use of 8 character tabs.

    Fixed some bugs relaing to '// and %' in combination with some
    of the the rounding modes based on a patch from Ernest Bowen
    <ernie at turing dot une dot edu dot au>.

    A patch from Klaus Alexander Seistrup <klaus at seistrup dot dk>, when
    used in combination with the GNU-readline facility, will prevent
    it from saving empty lines.

    Minor typos fixed in regress.cal

    Added 8500 test serise and test8500.cal to perform more extensive
    tests on // and % with various rounding modes.

    The 'unused value ignored' messages now start with Line 999: instead
    of just 999:.

    Fixed the long standing issue first reported by Saber-C in the
    domul() function in zmil.c thanks to a patch by Ernest Bowen
    <ernie at turing dot une dot edu dot au>.

    Added zero dimensional matrices.  A zero dimensional matrix is defined as:

	mat A[]	  or	A = mat[]

    Updated the help/mat file to reflect the current status of matrices
    including zero dimensional matrices.

    Added indices() builtin function as written by Ernest Bowen <ernie
    at turing dot une dot edu dot au> developed from an idea of Klaus
    Seistrup <klaus at seistrup dot dk>.  See help/indices for details.

    Fixed a number of insure warnings as reported by Michel van der List
    <vanderlistmj at sbphrd dot com>.

    Fixed a number of help file typos discovered by Klaus Alexander
    Seistrup <klaus at seistrup dot .dk>.

    Removed REGRESS_CAL as a Makefile variable.

    Added calcliblist and calcliblistfmt utility Makefile rules to allow
    one to print the list of distribution files that are used (but not
    built) to form either the libcalc.a or the libcustcalc.a library.

    Added a patch from <Randall.Gray at marine dot csiro dot au> to make
    ^D terminate, but *only* if the line it is on is completely empty.
    Removed lib/altbind and removed the CALCBINDINGS Makefile variable.

    A new config("ctrl_d") value controls how the ``delete_char'', which
    by default is bound to ^D (Control D), will or will not exit calc:

	config("ctrl_d", "virgin_eof")

	    If ^D is the only character that has been typed on a line,
	    then calc will exit.  Otherwise ^D will act according to the
	    calc binding, which by default is a Emacs-style delete-char.

	    This is the default mode.

	config("ctrl_d", "never_eof")

	    The ^D never exits calc and only acts according calc binding,
	    which by default is a Emacs-style delete-char.

	    Emacs purists may want to set this in their ~/.calcrc startup file.

	config("ctrl_d", "empty_eof")

	    The ^D always exits calc if typed on an empty line.	 This
	    condition occurs when ^D either the first character typed,
	    or when all other characters on the line have been removed
	    (say by deleting them).

	    Users who always want to exit when ^D is typed at the beginning
	    of a line may want to set this in their ~/.calcrc startup file.

	Note that config("ctrl_d") apples to the character bound to each
	and every ``delete_char''.  So if an alternate binding it setup,
	then those char(s) will have this functionality.

    Updated help/config and help/mode, improved the readability and
    fixed a few typos.	Documented modes, block formats and block bases
    ("mode", "blkfmt" & "blkbase") that were previously left off out of
    the documentation.

    The config("blkbase") and config("blkfmt") values return strings
    instead of returning integers.  One cannot use integers to set
    these values, so returning integers was useless.

    Applied the dangling name fix from Ernest Bowen
    <ernie at turing dot une dot edu dot au>.

    Show func prints function on order of their indices, and with
    config("lib_debug") & 4 == 4  some more details about the functions
    are displayed.

    Fixed another ``dangling name'' bug for when the object types list
    exceeded 2000.

    Fixed a bug related to opening to a calc session:

	define res_add(a,b) = obj res {r} = {a.r + b.r};
	...
	obj res A = {1,2}. obj res B = {3,4}

    A hash of an object takes into account the object type.  If X and Y
    are different kinds of objects but have the same component values,
    they will probably return different rather than the same values for
    hash(X) and hash(Y).

    Added support for config("ctrl_d") to the GNU-readline interface
    as written by Klaus Alexander Seistrup <klaus at seistrup dot dk>.

	Currently, the config("ctrl_d", "virgin_eof") is not fully
	supported.  Under GNU-readline, it acts the same way as
	config("ctrl_d", "empty_eof").	Emacs users may find this
	objectionable as ``hi^A^D^D^D'' will cause calc to exit due to
	the issuing of one too many ^D's.

	Emacs users may want to put:

	    config("ctrl_d", "never_eof"),;

	into their ~/.calcrc startup files to avoid this problem.

    Made misc documentation fixes.

    Fixed the make depend rule.

    Applied Ernest Bowen's <ernie at turing dot une dot edu dot au>
    complex function power(), exp() and transcendental function patch:

	Calc will return a "too-large argument" error-value for exp(x,
	epsilon) if re(x) >= 2^30 or if an estimate indicates that the
	result will have absolute value greater than 2^2^30 * epsilon.
	Otherwise the evaluation will be attempted but may fail due to
	shortage of memory or may require a long runtime if the result
	will be very large.

	The power(a, b, epsilon) builtin will return a "too-large result"
	if an estimate indicates that the result will have absolute value
	> 2^2^30 * epsilon.  Otherwise the evaluation will be attempted
	but may fail due to shortage of memory or may require a long
	runtime if the result will be very large.

	Changes have been made to the algorithms used for some special
	functions sinh(), cosh(), tanh(), sin(), cos(), etc., that make
	use of exp().  In particular  tanh(x)  is now much faster and
	doesn't run out of memory when x is very large - the value to
	be returned is then 1 to a high degree of accuracy.

	When the true value of a transcendental function is 1, as is
	cos(x) for x == 0, calc's version of the function will now return
	1 rather than the nearest multiple of epsilon.	E.g. cos(0, 3/8)
	no longer returns 9/8.

	The restriction of abs(n) < 1000000 on scale(x, n) has been
	removed.  The only condition n now has to satisfy for calc to
	attempt the operation is  n < 2^31, the same as for calc to
	attempt x << n and x^n.

	Changed root(x,n) so that when x is negative and n is odd it
	returns the principal complex n-th root of x rather than -1, e.g.
	root(-1,3) now returns -.5+.8660...i.

	Changed power(a,b) to permit a to be negative when b is real.
	E.g. power(-2,3) will now return 8 rather than cause a "negative
	base" error.

	Fixed several improper free and link problems in the comfunc.c code.

    Removed BOOL_B64 symbol from Makefile.

    The following config values return "true" or "false" strings:

	    tilde  tab	leadzero  fullzero  blkverbose	verbose_quit

	These config values can still be set with same boolean strings
	("on", "off", "true", "false", "t", ...) as well as via the
	numerical values 0 (for "false") and non-0 (for "true"), however.

    Added -s to the calc command line.	The -s flag will cause unused
    args (args after all of the -options on the command line) to remain
    as unevaluated strings.

    If calc is called with -s, then the new function argv() will return
    the number of strings on the command line.	Also argv(n) will return
    the n-th such string or null is no such string exists.

    Calc now handles calc shell scripts.  A calc shell script is an
    executable file that starts with:

	    #!/usr/local/bin/calc -S

	Where ``/usr/local/bin/calc'' is the path to the calc binary.
	Additional -options may be added to the line, but it MUST
	start with -S.	For example, the the executable file ``plus''
	contain the following:

	    #!/usr/local/bin/calc -S -e
	    /*
	     * This is a simple calc shell script to add two values
	     */
	    print eval(argv(0)) + eval(argv(1));

	then the following command:

	    ./plus 23 'pi(1e-5)'

	will print:

	    26.14159

    If calc is called with -S as the first arg, then calc will assume that
    it is being called from a #! calc shell script file.  The -S implies
    the -s flag.  If -i is not given, -S also implies -d and -p.

    Fixed the problem with non-literal string type checking for the
    C printf-like functions.  Able to determine if "%ld" or "%lld"
    is appropriate for printing of 64 bit long longs by way of the C
    symbol L64_FORMAT in the longlong.h header file.

    The following lines are treated as comments by calc:

	#! this is a comment
	# this is a comment
	#	this is a comment
	#
	# The lone # above was also a comment
	## is also a comment

    Improved how calc makes changes to file descriptor interactive state.
    Moved state changing code to calc_tty() and orig_tty() in lib_calc.c.
    The libcalc_call_me_last() function will restore all changed descriptor
    states that have not already been restored.

    Added the following read-only config values:

	config("program")	path to calc program or calc shell script
	config("basename")	basename of config("program")
	config("version")	calc version string


The following are the changes from calc version 2.11.0t8.9.1 to 2.11.0t9.4.5:

    The config("verbose_quit") will control the printing of the message:

	    Quit or abort executed

	when a non-interactive ABORT, QUIT or EXIT is encounted.  By default,
	config("verbose_quit") is TRUE and the message is printed.  If one does:

	    config("verbose_quit", 0)

	the message is disabled.

    Added 8400 regression test set and test8400.cal to test the new
    quit and config("verbose_quit") functionality.

    Fixed the BigEndian BASEB==16 regression bugs by correctly swapping
    16 bit HALFs in a 64 bit value (such as a 64 bit file pointer).

    Added calclevel() builtin to calculation level at which it is called.

    Added help/calclevel and help/inputlevel help files.

    Removed regression tests 951 and 5984 so that the regress test will
    run in non-interactively / without a TTY such as under Debian's
    build daemon.

    The eval(str) builtin will return an error-value rather than cause
    an execution error str has a scan-error.

    Declarations are permitted to end with EOF as well as a newline or ';'.

    When prompt() occurs while reading a file, it will take input from
    the terminal rather than taking it from a file.  For example:

	    /* This demonstrates the use of prompt() and some other things  */
	    config("verbose_quit", 0);
	    define getnumber() {
		local x;
		for (;;) {
		    x = eval(prompt(">>> "));
		    if (isnum(x))
			return x;
		    print "Not a number! Try again";
		}
	    }
	    print "This will display the sqrt of each number you enter";
	    print "Enter quit to stop";
	    for (;;) {
		print sqrt(getnumber());
	    }
	    print "Good bye";

	Comments entered at input terminal level may be spread over several
	lines.	For example:

	    /*
	     * Assume that this calc script is called: comment.cal
	     * Then these commands now work:
	     *	cat comment.cal | calc
	     *	calc < comment.cal
	     */
	    print "Hello";

    Added:

	-D calc_debug[:lib_debug:[user_debug]]

    to set the initial value of config("calc_debug"), config("lib_debug")
    and config("user_debug").

    The : separated strings of -D are interpreted as signed 32 bit values.
    After an optional leading sign a leading zero indicates octal
    conversion, and a leading ``0x'' or ``0X'' hexadecimal conversion.
    Otherwise, decimal conversion is assumed.

    Reordered the config structure moving calc_debug ahead of lib_debug.

    Added bits 4 and 5 to config("calc_debug"):

	4	Report on changes to the state of stdin as well as changes
		to internal variables that control the setting and restoring
		of stdin.

	5	Report on changes to the run state of calc.

    Fixed portability issue in seed.c relating to /dev/urandom and ustat.

    Added a fix from Martin Buck <mb at netwings dot ch> to detect when
    calc aborts early instead of completing the regression test.
    Now 'make chk' will require the last line of calc output to
    end in the string ``Ending regression tests''.

    Added a patch from Martin Buck <mb at netwings dot ch> to allow use of
    GNU-readline.  Note that GNU-readline is not shipped with calc.
    His patch only provides the hooks to use it.  One must comment out:

	    USE_READLINE=
	    READLINE_LIB=
	    READLINE_INCLUDE=

	and comment in:

	    USE_READLINE= -DUSE_READLINE
	    READLINE_LIB= -lreadline -lhistory
	    READLINE_INCLUDE= -I/usr/include/readline

	in addition to pre-installing GNU-readline in your system to use
	this facility.

    Changed the "object already defined" math_error to a scanerror message.

    Removed the limit on the number of object types.

    Calc tarballs are now named calc-version.tar.gz and untar into
    a sub-directory called calc-version.

    Made a small change to declarations of static variables to reduce
    the internal opcodes needed to declare them.

    Fixed a permission problem on ranlib-ed *.a files that was reported
    by Michael Somos <somos at grail dot cba dot csuohio dot edu>.

    Added patch by Klaus Alexander Seistrup <klaus at seistrup dot dk>
    related to GNU-readline:

	+ enable calc specific bindings in ~/.inputrc
	+ save a copy of your session to disk and reload them next
	  time you're using calc
	+ only add a line to the history if it is different from
	  the previous line

    Added the Makefile symbol HAVE_GETRUSAGE to determine if the
    system supports the getrusage() system call.

    Fixed the make depend code in the custom and sample Makefiles.

    Fixed how the help/builtin file is formed.	The help/Makefile is
    now given the name of the native C compiler by the top level Makefile.

    The include files are installed under INCDIRCALC (a new Makefile variable)
    which by default is ${INCDIR}/calc.	 The INCDIR (also a new Makefile var)
    by default is /usr/local/include.  Include files previously installed
    directly under ${LIBDIR} will be removed.

    Added the piforever() funcion to lib/pi.cal.  It was written by
    Klaus Alexander Seistrup <klaus at seistrup dot dk> and was inspired by
    an algorithm conceived by Lambert Meertens.	 (See also the ABC
    Programmer's Handbook, by Geurts, Meertens & Pemberton, published
    by Prentice-Hall (UK) Ltd., 1990.)	The piforever() funcion prints
    digits of pi for as long as your memory and system uptime allows.  :-)

    Fixed the URLs found thruout the source and documentation which did
    not and in /, but should for performance and server load reasons.

    Cleaned up and improved handling of "mat" and "obj".  The comma in:

	    mat A[2], B[3];

	is changed to whatever is appropriate in the context:

	    + comma operator
	    + separator of arguments in a function call
	    + separator of arguments in a defintion
	    etc.

	The expression (mat A[2]), B[3] returns B[3], assuming B already
	exists as something created by a statement like: global mat B[4].

	What used to be done by the expression:

	    mat A[2], B[3]

	will now require something like:

	    mat A[2], mat B[3]	or	A = mat[2], B = mat[3]

	For example, if obj point and obj pair are known types, the
	following is now allowed:

	    L = list(mat[2], mat[3], obj point, obj pair)

	As another example, the following is allowed:

	    define f(a = mat[2] = {3,4}) = 5 * a;

	as well as the following:

	    obj point {x,y}, PP = obj pair {A,B} = {obj point, obj point}

	which creates two object types at compile time and when executed,
	assigns a pair-object value to a variable PP.

    Fixed a bug whereby a for loop would behave incorrectly.  For example:

	    config("trace", 2),
	    global x;
	    define f() {for ( ; x > 0; x--) {print x;}}
	    x = 5, f()

	will stop after printing 1 instead of looping forever.

    Added values l_format, which when CHECK_L_FORMAT is defined ahead
    of including longlong.h will help detect when a system can deal with
    'long long' but not '%lld' in printf.  If a system with 'long long'
    uses '%ld' to print a 64 bit value, then l_format will be > 0;
    othewise if "%lld" is required, l_format will be < 0.

    Added HAVE_STRDUP Makefile variable as well as the have_strdup.c
    program that forms the have_strdup.h file.	The have_strdup.h file
    will define HAVE_STRDUP is the system has strdup().	 If HAVE_STRDUP
    is not defined, then calc will use calc_strdup() to simulate
    the real strdup() function.

    Calc no longer makes use of sys_errlist and sys_nerr.  Some systems
    no longer suppor these values (even though they should from a
    legacy prospective).  Calc now relies on the fact that strerror()
    will return NULL of no such system error exists.  System errors >=
    10000 will be considered calc errors instead.  The Makefile symbol
    ERRNO_DECL has gone away as well as calc_errno.c and calc_errno.h.

    System errors that are are not known to to the libc strerror()
    function, will now print (via the strerror() calc builtin function)
    something such as:

	    Unknown error 9999

    Fixed some insure code inspection tool issues that were discovered
    and investigated by Michel van der List <vanderlistmj at sbphrd dot com>.

    Made an effort to ensure that the v_subtype of VALUES are initialized
    to V_NOSUBTYPE thruout the source code.

    Established a separate calc-bugs address from the calc-tester
    maining list.  Using anti-spam address forms in order to try and
    stay under the radar of spammers as much as one can do so.


The following are the changes from calc version 2.11.0t8 to 2.11.0t8.9:

    Moved 'wishlist' enhancements from the help/todo file to a new
    help/wishlist file.	 Ordered, by priority, help/todo items into
    Very High, High and Medium priority items.

    The BUGS file now has a 'bugs' section as well as a 'mis-features'
    section.

    Improved how calc internally dealt with reading EOF or '\0' characters.

    Calc now allows multiple defines to occur on the same line:
    (Thanks goes to Ernest Bowen <ernie at turing dot une dot edu dot au>)

	define f8300(x) = x^2; define g8300(x) = 1 - x;

    Improved calc's ability to deal with and recover from errors.

    Added inputlevel() builtin to return the input processing level.
    In an interact mode, inputlevel() returns 0.  When directly reading
    a calc script, inputlevel() returns 1.  When reading a script which
    in turn reads another script, inputlevel() returns 2.  etc...

    If $CALCRC has more than one file as in file1:file2 and an error
    occurs in file1, then calc -c will not read file2.

    Fixed some of the old EMail addresses found in calc documentation.

    Added HAVE_USTAT, HAVE_GETSID, HAVE_GETPGID, HAVE_GETTIME, HAVE_GETPRID
    and HAVE_URANDOM symbols to the Makefile.  These symbols, along with
    have_ustat.c, have_getsid.c, have_getpgid.c, have_gettime.c and
    have_getprid.c form: have_ustat.h, have_getsid.h, have_getpgid.h,
    have_gettime.h, have_getprid.h and have_urandom.h which in turn
    are used by pseudo_seed() in seed.c to determine what types of
    system services can be used to form a pseudo-random seed.

    Fixed the way calc -c will continue processing $CALCRC when errors
    are encountered.  Unless -d is also given, calc -c will report
    when calc is unable to open a $CALCRC file.

    Fixed the lower level make depend rules.

    Misc cleanup on the have_*.c support source files.

    Misc source file cleanup for things such as } else { style consistency.

    Fixed the basis for FNV-1 hashes.  Piror to this fix, the hash()
    builtin produced FNV hash values that did not match the FNV-1
    algorithm as specified in:

	http://www.isthe.com/chongo/tech/comp/fnv/index.html

    Removed an unused argument in the function getbody() in codegen.c.

    Encountering of EOF in getbody() will cause a scanerror rather then
    stop activity.  This will now result in a scanerror:

	echo 'define f(x) { ' > myfile
	calc -i read myfile

    A '{' at the start of a command and a later matching '}' surrounding zero
    or more statements (and possibly newlines) results in a function body to
    be "evaluated".   This permits another command to follow on the same
    line as the '}' as in:

		{display(5)} read something;
	and:
		{static a = 5} define f(x) = a + x;

    String constants can now be concatenated.  For exmaple:

	s = "curds" ' and ' "whey";

    Added FNV hash to the regression test suite.

    Added Ernest Bowen's <ernie at turing dot une dot edu dot au> fix for the
    FNV regression test of the hash() builtin function.

    Added Ernest Bowen's <ernie at turing dot une dot edu dot au> patch to
    improve the way config("calc_debug").  Now the lower 4 bits of the
    config("calc_debug") parameter have the following meaning:

       n	       Meaning of bit n of config("calc_debug")

       0       Outputs shell commands prior to execution.

       1       Outputs currently active functions when a quit instruction
	       is executed.

       2       Some details of shs, shs1 and md5 hash states are included
	       in the output when these are printed.

       3       When a function constructs a block value, tests are
	       made that the result has the properties required for use of
	       that block, e.g. that the pointer to the start of the
	       block is not NULL, and that its "length" is not negative.
	       A failure will result in a runtime error.

    Changed the meaning of (config("calc_debug") & 1) from only printing
    the shell commands (and pausing) while displaying help files into
    the printing of any shell command prior to execution.

    Documented the meaning of config("lib_debug"):

	n		Meaning of bit n of config("lib_debug")

	0	When a function is defined, redefined or undefined at
		interactive level, a message saying what has been done
		is displayed.

	1	When a function is defined, redefined or undefined during
		the reading of a file, a message saying what has been done
		is displayed.

	The value for config("lib_debug") in both oldstd and newstd is
	3, but if calc is invoked with the -d flag, its initial value
	is zero.  Thus, if calc is started without the -d flag, until
	config("lib_debug") is changed, a message will be output when a
	function is defined either interactively or during the reading
	of a file.

    Changed the calc lib files to reflect the new config("lib_debug")
    bit field meaning.	Calc lib files that need to print extra information
    should now do something such as:

	if (config("lib_debug") & 3) {
		print "obj xyz defined";
		print "funcA([val1 [, val2]]) defined";
		print "funcB(size, mass, ...) defined";
	}

    Fixed the help/custom_cal, help/new_custom, and help/copy files so
    that they contain the correct contents instead of the 'usage' file.

    Fixed problem with loss of bindings when calc -i args runs into
    an error while processing 'args' and drops into interactive mode
    without the terminal bindings being set.

    Added patch from Ernest Bowen to extablish the abort command as
    well as to clarify the roles of quit and exit.  See the help/command
    file for details.

    Updated to some extend, the help/statement and help/command help
    files with new information about SHOW, QUIT, EXIT and ABORT.

    Added show sizes to pzasusb8.cal.

    Updated calc man page and help/usage file to reflect recent
    command line changes.

    Fixed a bug, reported by Michael Somos <somos at grail dot cba dot
    csuohio dot edu>, which prevented calc -m from being used.

    Fixed misc compiler warnings.


The following are the changes from calc version 2.11.0t7 to 2.11.0t7.5:

    Calc has some new command line flags / command line meaning:
    (Thanks goes to Ernest Bowen <ernie at turing dot une dot edu dot au>)

	-i	Go into interactive mode if possible.

	-c	Continue reading command lines even after an execution
		error has caused the abandonment of a line

	To understand the -i and -c effects, consider the following
	file (call it myfile.cal) which has deliberate errors in it:

	    print 1;
	    mat A[1] = {2,3};
	    print 2;
	    epsilon(-1);
	    print 3;

	calc read myfile

	    Reports an error on the 2nd line and exits; prints 1 only.

	calc -c read myfile

	    Report errors on the 2nd and 4th lines and exits; prints 1,2 and 3.

	calc -i read myfile

	    Report errors on the 2nd and gives you a prompt; prints 1 only.

	calc -i -c read myfile

	    Report errors on the 2nd and 4th and gives you a prompt;
	    prints 1, 2 and 3.

	cat myfile | calc

	    Reports an error on the 2nd line and exits; prints 1 only.

	cat myfile | calc -c

	    Report errors on the 2nd and 4th lines and exits; prints 1,2 and 3.

	Note that continuation refers to command lines, not to statements.  So:

	    calc -c 'print "start"; mat A[1] = {2,3}; print "end";'

	since it contains no newline, the whole string is compiled,
	but execution is abandoned when the error is encountered and
	the string ``end'' is not printed.

	You can use your shell to supply newlines in your command line
	arguments.  For example in sh, ksh, bash:

	    calc -c 'print "start";
	    mat A[1] = {2,3};
	    print "end";'

	will print both ``start'' and ``end''.	C-shell users can do:

	    calc -c 'print "start"; \
	    mat A[1] = {2,3}; \
	    print "end";'

	however sh, ksh, bash will not see ``end'' printed because their
	shell will remove the internal newlines.

    Added display(n) builtin which does almost the same as config("display",n)
    except that rather than causing an execution with an out-of-range or
    bad-type argument type, it simply writes a message to stderr.  This
    also now happens to the errmax() builtin.

    Added qtime.cal to the standard calc library.

    Added another command line flag to calc:

	-d	Disable display of the opening title and config("lib_debug",0)

	The command:

	    calc 'read qtime; qtime(2)'

	will output something like:

	    qtime(utc_hr_offset) defined
	    It's nearly ten past six.

	whereas:

	    calc -d 'read qtime; qtime(2)'

	will just say:

	    It's nearly ten past six.

    A call of errmax(-1) will prevent errcount from aborting calc.

    Add the function stoponerror(n) which, as the name implies, controls
    if calc stop on an error based on the value of n:

	n > 0	stop on error even if -c was given on the command line
	n == 0	if -c, continue, without -c, stop
	n < 0	continue on error, even if -c was given on the command line

    Calc compilation now stops at the first scanerror.

    Restored the feature where -p disables the printing of leading tabs
    as of config("tab",0) had been executed.  So using calc in a pipe:

	calc -p 2+17 | whey

    will write '19' instead of '\t19' to the whey command.

    Updated calc man page and help/usage file to reflect recent
    command line changes.

    Converted start_done into a general calc run state enum called
    run_state within the calc source.

    Removed README.OLD.

    Added the Makefile variable ${LCC} to invoke the local c compiler.
    By default, ${CC} also run the ${LCC} compiler.  The distinction is
    useful when using something such as purify.	 In the case of ${LCC},
    only the local C compiler is invoked.  In the case of ${CC} a purify
    compile is invoked.	 Only the source that must be compiled and run
    on the local machine use ${LCC}; everything else uses ${CC}.

    Fixed memory buffer ovreread problem in eatstring() in token.c.

    Fixed memory leaks related to putenv().

    Fixed memory leaks realted to srandom().

    Fixed compilation warnings and problems on BSDI.

    Removed ${CCMAIN} as a variable from the Makefile.	Now files
    use either ${CFLAGS} for general C source and ${ICFLAGS} for
    intermediate C source (e.g., special code for building hsrc files).

    The main calc URL is now:

	http://www.isthe.com/chongo/tech/comp/calc/

    Misc calc man page fixes.


The following are the changes from calc version 2.11.0t1 to 2.11.0t6.3:

    Removed the makefile symbol MAIN.  Now forcing all functions to correctly
    be declared main.  To satisfy some old broken compilers, a return 0;
    (instead of an exit(0);) is used at the end of main().

    A few of files that were added to calc used 4 character indentation
    whereas most of calc uses 8 character indentation.	These imported
    sources have been changed to conform better with the calc style.

    Added the program calc_errno.c and the Makefile symbol ERRNO_DECL.
    If ERRNO_DECL is empty, calc_errno.c will try various ways to
    declare errno, sys_errlist and sys_nerr.  On success or when
    it gives up, calc_errno will output the middle of the calc_errno.h
    header file.  If ERRNO_DECL is  -DERRNO_NO_DECL, or -DERRNO_STD_DECL
    or -DERRNO_OLD_DECL then the Makefile will build the middle
    of the calc_errno.h header file without calc_errno.c's help.

    The func.c file now includes the constructed header file calc_errno.h
    to ensure that errno, sys_errlist and sys_nerr are declared correctly.

    Changed check.awk to be more 'old awk' friendly.

    Made some of the source a little more ++ friendly.	We are NOT
    porting calc to C++!  We will NOT support C++ compilation of calc.
    Calc will written ANSI C.  We just compiled with a suggestion from
    Love-Jensen, John <jlove-jensen at globalmt dot com> to make calc's version
    of C a little more to C++ compilers.  We are simply avoiding symbols
    such as new or try for example.

    Renamed README to README.OLD.  Renamed README.FIRST to README.
    Updated README, lib/README and BUGS to reflect new URLs and addresses.

    Added a HOWTO.INSTALL file.

    Reordered cc Makefile variable sets in the main Makefile.

    Fixed a bug in hnrmod() and applied a fix that was reported by Ernest
    Bowen <ernie at turing dot une dot edu dot au>.  Added regression tests
    1103 to 1112 to confirm the fix.

    Fixed a bug in version.c related to MINOR_PATCHs in both the
    empty and non-empty MINOR_PATCH cases.

    Fixed malloc and bad storage issues reported by Michel van der List
    <vanderlistmj at sbphrd dot com>.

    Fixed some problems related to path processing while opening files.
    Under extreme cases, an excessively long filename or CALCPATH value
    could create problems.  Placed guards in opensearchfile() function
    in input.c to catch these cases.

    Fixed cases were malloc failures were silently ignored in input.c.

    Eliminated the PATHSIZE limit and the PATHSIZE symbol.

    Added MAX_CALCRC to limit the length of the $CALCRC environment
    variable to 1024 chars.

    Fixed the magic number relating to the initial number of constants
    declared by initconstants().  It is now related to the length
    of the initnumbs[] NUMBER array.

    Added a 'Dec Alpha / Compaq Tru64 cc (non-gnu) compiler set'
    section to the main Makefile.

    Fixed a string handling bug discovered by Dr.D.J.Picton
    <dave at aps5 dot ph dot bham dot ac dot uk> in the custom demo code.

    Fixed a bug in the hnrmod() builtin that was discovered by
    Ernest Bowen <ernie at turing dot une dot edu dot au>.

    Added FORCE_STDC symbol.  When defined it will force __STDC__ like
    conditions.	 Thus for compilers with as the Solaris cc compiler
    that are ANSI-like but still define __STDC__ as 0, one can use
    -DFORCE_STDC and make use of ANSI-like features.

    Removed the CCSHS symbol from the Makefile.	 The shs.c and shs1.c
    files are now compiled with full ${CFLAGS}.

    The custom.c file is now compiled with full ${CFLAGS}.

    Rewrote command line / argument processing code.  Calc is now
    using getopt(3) argument processing.

    Fixed a memory leak related to converting strings to numbers
    in the str2q() function in qio.c.

    Fixed a problem with reading uninitialized memory in the
    v_subtype of a VALUE in the copyvalue() function in value.c.

    Fixed problems in func.c where temporary VALUEs were not
    having their v_type elements initialized.

    Fixed a memory leak in qpi() in qtrans.c.

    Fixed a memory leak in math_getdivertedio() in zio.c.

    Fixed a problem with points going beyond the end of allocated
    memory in addstring() in string.c.

    Fixed a memory leak in zgcdrem(), f_putenv(), zlog() and
    zlog10() in zfunc.c.

    Fixed a memory leak in zdiv() and zshift() in zmath.c.

    Fixed memory leaks in zsrand() in zrand.c.

    Fixed a memory leak in zsrandom1() in zrandom.c.  Fixed memory
    leaks associated with replacing the internal random state with
    another random state.

    Added seed() builtin to return a 64 bit seed for a
    pseudo-random generator.

    Added functionality from Ernest Bowen <ernie at turing dot une dot
    edu dot au> to permit nested "= {...}" assignments for lists as well
    as matrices and objects.  Now one can have a list, matrix or object,
    some of whose elements are lists, matrices or objects, to any depth
    of recursion, and assign values to any number of particular elements
    by an appropriate "initialization" expression.  For example:

	A = mat[2] = {list(1,2), list(3,4,list(5,6))};

    and then assign values to the 6 number elements by:

	A = {{7,8}, {9,10,{11,12}}};

    Closed files that were previously left open from test4600.cal
    as executed by regress.cal and from opening /dev/null by
    regress.cal itself.

    Fixed memory leaks from f_strprintf() and f_putenv() in func.c.

    The regress.cal test suite calls freeredc(), freestatics() and
    freeglobals() at the end of the test suite to free storage
    consumed during the regression.

    Added custom function custom("pzasusb8", n) and lib/pzasusb8.cal based on
    Ernest Bowen's diagnostic patch.

    Thanks to the efforts of Ernest Bowen <ernie at turing dot une dot
    edu dot au> and Dr.D.J.Picton <dave at aps5 dot ph dot bham dot ac
    dot uk>, a nasty endian-ness bug in the sha and sha1 hash functions
    that showed up on machines such as the Sparc was fixed.

    Added functionality from Ernest Bowen <ernie at turing dot une
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #define conflicts
    were reverse since the #define's needed to support the union went away.

    Removed trailing blanks from files.

    Ernest Bowen <ernie at turing dot une dot edu dot au> sent in the
    following patch which is described in the next 34 points:

    (0) In the past:

		    A = B = strcat("abc", "def");

	would store "abc" and "def" as literal strings never to be freed, and
	store "abcdef" once each for both A and	 B.  Now the "abc" and "bcd"
	are freed immediately after they are concatenated and "abcdef" is stored
	only once, just as the number 47 would be stored only once for

		    A = B = 47;

	The new STRING structure that achieves this stores not only the
	address of the first character in the string, but also the "length"
	with which the string was created, the current "links" count, and
	when links == 0 (which indicates the string has been freed) the
	address of the next freed STRING.  Except for the null string "",
	all string values are "allocated"; the concept of literal string
	remains for names of variables, object types and elements, etc.

    (1) strings may now include '\0', as in A = "abc\0def".  In normal printing
	this prints as "abc" and strlen(A) returns 3, but its "real" length
	of 7 is given by size(A). (As before there is an 8th zero character
	and sizeof(A) returns 8.)

    (2) If A is an lvalue whose current value is a string of size n, then
	for 0 <= i < n, A[i] returns the character with index i as an addressed
	octet using the same structure as for blocks, i.e. there is no
	distinction between a string-octet and a block-octet.  The same
	operations and functions can be used for both, and as before, an octet
	is in some respects a number in [0,256) and in others a one-character
	string.	 For example, for A = "abc\0def" one will have both A[0] == "a"
	and A[0] == 97.	 Assignments to octets can be used to change
	characters in the string, e.g. A[0] = "A", A[1] = 0, A[2] -= 32,
	A[3] = " " will change the above A to "A\0C def".

    (3) "show strings" now displays the indices, links, length, and some or all
	of the early and late characters in all unfreed strings which are values
	of lvalues or occur as "constants" in function definitions,
	using "\n", "\t", "\0", "\252", etc. when appropriate.	For example,
	the string A in (1) would be displayed as in the definition there.
	Only one line is used for each string.	I've also changed the
	analogous "show numbers" so that only some digits of numbers that
	would require more than one line are displayed.

    (4) "show literals" is analogous to "show constants" for number "constants"
	in that it displays only the strings that have been introduced by
	literal strings as in A = "abc".  There is a major difference) and in
    dot edu dot au> to give arguments as well as function names after
    definitions when config("lib_debug") >= 0.

    Removed if (config("lib_debug") >= 0) { ... } the ends of most
    of the calc library scripts because it was redundant with the
    new config("lib_debug") >= 0 functionality.	 Some of the calc
    library still has a partial section because some useful
    additional information was being printed:

	chrem.cal	deg.cal	     lucas_tbl.cal   randrun.cal
	mfactor.cal	mod.cal	     poly.cal	     seedrandom.cal
	surd.cal	varargs.cal

    Fixed ellip.cal so that its defined function does not conflict with
    the factor() builtin function.

    Fixed mod.cal so that a defined function does not conflict with
    the mod() builtin function.

    The regression test suite now reads in most calc libs.  A few
    libs are not read because they, by design, produce output
    when read even when config("lib_debug") is set to -1.

    Increased the maximum number of object types that one can define
    from 10 to 128.

    Added a patch from Ernest Bowen <ernie at turing dot une dot edu
    dot au> to correctly hash a V_STR value-type that has an \0 byte
    inside it.

    A patch from Ernest Bowen <ernie at turing dot une dot edu dot au> now
    defines special meaning to the first 2 bits of config("lib_debug"):

	bit 0 set => messages printed when inputisterminal
	bit 1 set => messages printed when reading from a file

    The lib/regress.cal regression suite does:

	config("lib_debug", -4);

    to eliminate lib messages (both bit 0 and bit 1 are not set).

    Fixed misc compile warnings and notices.


The following are the changes from calc version 2.10.3t5.38 to 2.11.0t0:

    Fixed a few compile problems found under Red Hat 6.0 Linux.


The following are the changes from calc version 2.10.3t5.38 to 2.11.3t5.46:

    Fixed a bug discovered by Ernest Bowen related to matrix-to-matrix copies.

    Bitwise operations on integers have been extended so that negative
    integers are treated in the same way as the integer types in C.

    Some changes have been made to lib/regress.cal and lib/natnumset.cal.

    Removed V_STRLITERAL and V_STRALLOC string type constants and
    renumbered the V_protection types.

    Added popcnt(x, bitval) builtin which counts the number of
    bits in x that match bitval.

    Misc compiler warning fixes.

    Fixed improper use of putchar() and printf() when printing rationals
    (inside qio.c).

    Fixed previously reported bug in popcnt() in relation to . values.

    Calc man page changes per suggestion from Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de>.  The calc man page is
    edited with a few more parameters from the Makefile.

    Misc Makefile changes per Martin Buck <Martin-2.Buck at student dot
    uni-ulm dot de>.

    Removed trailing blanks from files.

    Consolidated in the Makefile, where the debug and check rules are found.
    Fixed the regress.cal dependency list.

    Make chk and check will exit with an error if check.awk detects
    a problem in the regression output.	 (Martin Buck)

    Fixed print line for test #4404.

    Moved custom.c and custom.h to the upper level to fix unresolved symbols.

    Moved help function processing into help.c.

    Moved nearly everything into libcalc.a to allow programs access to
    higher level calc objects (e.g., list, assoc, matrix, block, ...).

    Renamed PATCH_LEVEL to MAJOR_PATCH and SUB_PATCH_LEVEL to MINOR_PATCH.
    Added integers calc_major_ver, calc_minor_ver, calc_major_patch
    and string calc_minor_patch to libcalc.a.  Added CALC_TITLE to hold
    the "C-style arbitrary precision calculator" string.

    The function version(), now returns a malloced version string
    without the title.

    Consolidated multiple SGI IRIX -n32 sections (for r4k, r5k and r10k)
    into a single section.


The following are the changes from calc version 2.10.3t5.34 to 2.10.3t5.37:

    Per request from David I Bell, the README line:

      I am allowing this calculator to be freely distributed for personal uses

    to:

      I am allowing this calculator to be freely distributed for your enjoyment

    Added help files for:

	address agd arrow dereference free freeglobals freeredc freestatics
	gd isptr mattrace oldvalue saveval & * -> and .

    Fixed blkcpy() and copy() arg order and processing.	 Now:

	A = blk() = {1,2,3,4}
	B = blk()
	blkcpy(B,A)
	blkcpy(B,A)

    will result in B being twice as long as A.

    Since "make chk" pipes the regression output to awk, we cannot
    assume that stdout and stderr are ttys.  Tests #5985 and #5986
    have been removed for this reason.	(thanks to Martin Buck
    <Martin-2.Buck at student dot uni-ulm dot de> for this report)

    Fixed the order of prints in regress.cal.  By convention, a print
    of a test line happens after the test.  This is because function
    parsed messages occur after the function is parsed.	 Also the
    boolean tesrt of vrfy happens before any print statement.
    Therefore a non-test line is tested and printed as follows:

	y = sha();
	print '7125: y = sha()';

    The perm(a,b) and comb(a,b) have been extented to arbitrary real a and
    integer b.

    Fixed a bug in minv().

    Moved string.c into libcalc.a.

    The NUMBER union was converted back into a flat structure.	Changes
    where 'num' and 'next' symbols were changed to avoid #