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12. Normalization forms (composition and decomposition) <uninorm.h>

This include file defines functions for transforming Unicode strings to one of the four normal forms, known as NFC, NFD, NKFC, NFKD. These transformations involve decomposition and — for NFC and NFKC — composition of Unicode characters.

12.1 Decomposition of Unicode characters

The following enumerated values are the possible types of decomposition of a Unicode character.

Constant: int UC_DECOMP_CANONICAL

Denotes canonical decomposition.

Constant: int UC_DECOMP_FONT

UCD marker: <font>. Denotes a font variant (e.g. a blackletter form).

Constant: int UC_DECOMP_NOBREAK

UCD marker: <noBreak>. Denotes a no-break version of a space or hyphen.

Constant: int UC_DECOMP_INITIAL

UCD marker: <initial>. Denotes an initial presentation form (Arabic).

Constant: int UC_DECOMP_MEDIAL

UCD marker: <medial>. Denotes a medial presentation form (Arabic).

Constant: int UC_DECOMP_FINAL

UCD marker: <final>. Denotes a final presentation form (Arabic).

Constant: int UC_DECOMP_ISOLATED

UCD marker: <isolated>. Denotes an isolated presentation form (Arabic).

Constant: int UC_DECOMP_CIRCLE

UCD marker: <circle>. Denotes an encircled form.

Constant: int UC_DECOMP_SUPER

UCD marker: <super>. Denotes a superscript form.

Constant: int UC_DECOMP_SUB

UCD marker: <sub>. Denotes a subscript form.

Constant: int UC_DECOMP_VERTICAL

UCD marker: <vertical>. Denotes a vertical layout presentation form.

Constant: int UC_DECOMP_WIDE

UCD marker: <wide>. Denotes a wide (or zenkaku) compatibility character.

Constant: int UC_DECOMP_NARROW

UCD marker: <narrow>. Denotes a narrow (or hankaku) compatibility character.

Constant: int UC_DECOMP_SMALL

UCD marker: <small>. Denotes a small variant form (CNS compatibility).

Constant: int UC_DECOMP_SQUARE

UCD marker: <square>. Denotes a CJK squared font variant.

Constant: int UC_DECOMP_FRACTION

UCD marker: <fraction>. Denotes a vulgar fraction form.

Constant: int UC_DECOMP_COMPAT

UCD marker: <compat>. Denotes an otherwise unspecified compatibility character.