C
C  This file is part of MUMPS 5.1.2, released
C  on Mon Oct  2 07:37:01 UTC 2017
C
C
C  Copyright 1991-2017 CERFACS, CNRS, ENS Lyon, INP Toulouse, Inria,
C  University of Bordeaux.
C
C  This version of MUMPS is provided to you free of charge. It is
C  released under the CeCILL-C license:
C  http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.html
C
      SUBROUTINE CMUMPS_FREE_BLOCK_CB(SSARBR, MYID, N, IPOSBLOCK,
     &       RPOSBLOCK,
     &       IW, LIW,
     &       LRLU, LRLUS, IPTRLU,
     &       IWPOSCB, LA, KEEP, KEEP8, IN_PLACE_STATS
     &     )
      USE CMUMPS_LOAD
      IMPLICIT NONE
      INTEGER(8) :: RPOSBLOCK
      INTEGER IPOSBLOCK,
     &         LIW, IWPOSCB, N
      INTEGER(8) :: LA, LRLU, LRLUS, IPTRLU
      LOGICAL IN_PLACE_STATS
      INTEGER IW( LIW ), KEEP(500)
      INTEGER(8) KEEP8(150)
      INTEGER MYID
      LOGICAL SSARBR
      INTEGER SIZFI_BLOCK, SIZFI
      INTEGER IPOSSHIFT
      INTEGER(8) :: SIZFR, SIZFR_BLOCK, SIZFR_BLOCK_EFF,
     &              SIZEHOLE, MEM_INC
      INCLUDE 'mumps_headers.h'
      IPOSSHIFT = IPOSBLOCK + KEEP(IXSZ)
      SIZFI_BLOCK=IW(IPOSBLOCK+XXI)
      CALL MUMPS_GETI8( SIZFR_BLOCK,IW(IPOSBLOCK+XXR) )
      IF (KEEP(216).eq.3) THEN
        SIZFR_BLOCK_EFF=SIZFR_BLOCK
      ELSE
        CALL CMUMPS_SIZEFREEINREC( IW(IPOSBLOCK),
     &                     LIW-IPOSBLOCK+1,
     &                     SIZEHOLE, KEEP(IXSZ))
        SIZFR_BLOCK_EFF=SIZFR_BLOCK-SIZEHOLE
      ENDIF
      IF ( IPOSBLOCK .eq. IWPOSCB + 1 ) THEN
         IPTRLU  = IPTRLU  + SIZFR_BLOCK
         IWPOSCB = IWPOSCB + SIZFI_BLOCK
         LRLU    = LRLU  + SIZFR_BLOCK
         IF (.NOT. IN_PLACE_STATS) THEN
           LRLUS   = LRLUS + SIZFR_BLOCK_EFF
           KEEP8(70) = KEEP8(70) + SIZFR_BLOCK_EFF
           KEEP8(71) = KEEP8(71) + SIZFR_BLOCK_EFF
         ENDIF
      MEM_INC = -SIZFR_BLOCK_EFF
      IF (IN_PLACE_STATS) THEN
        MEM_INC= 0_8
      ENDIF
      CALL CMUMPS_LOAD_MEM_UPDATE(SSARBR,.FALSE.,
     &         LA-LRLUS,0_8,MEM_INC,KEEP,KEEP8,LRLUS)
 90      IF ( IWPOSCB .eq. LIW ) GO TO 100
         IPOSSHIFT = IWPOSCB + KEEP(IXSZ)
         SIZFI = IW( IWPOSCB+1+XXI )
         CALL MUMPS_GETI8( SIZFR,IW(IWPOSCB+1+XXR) )
         IF ( IW( IWPOSCB+1+XXS ) .EQ. S_FREE ) THEN
              IPTRLU  = IPTRLU + SIZFR
              LRLU    = LRLU + SIZFR
              IWPOSCB = IWPOSCB + SIZFI
              GO TO 90
         ENDIF
 100     CONTINUE
         IW( IWPOSCB+1+XXP)=TOP_OF_STACK
      ELSE
         IW( IPOSBLOCK +XXS)=S_FREE
         IF (.NOT. IN_PLACE_STATS) THEN
           LRLUS = LRLUS + SIZFR_BLOCK_EFF
           KEEP8(70) = KEEP8(70) + SIZFR_BLOCK_EFF
           KEEP8(71) = KEEP8(71) + SIZFR_BLOCK_EFF
         ENDIF
      CALL CMUMPS_LOAD_MEM_UPDATE(SSARBR,.FALSE.,
     &            LA-LRLUS,0_8,-SIZFR_BLOCK_EFF,KEEP,KEEP8,LRLUS)
      END IF
      RETURN
      END SUBROUTINE CMUMPS_FREE_BLOCK_CB
