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# 7. Names of Unicode characters `<uniname.h>`

This include file implements the association between a Unicode character and its name.

The name of a Unicode character allows to distinguish it from other, similar looking characters. For example, the character ‘`x`’ has the name `"LATIN SMALL LETTER X"` and is therefore different from the character named `"MULTIPLICATION SIGN"`.

Macro: unsigned int UNINAME_MAX

  This macro expands to a constant that is the required size of buffer for a Unicode character name.

Function: char * unicode_character_name (ucs4_t uc, char *buf)

  Looks up the name of a Unicode character, in uppercase ASCII. buf must point to a buffer, at least `UNINAME_MAX` bytes in size. Returns the filled buf, or NULL if the character does not have a name.

Function: ucs4_t unicode_name_character (const char *name)

  Looks up the Unicode character with a given name, in upper- or lowercase ASCII. NAME can also be an alias name of a character. Returns the character if found, or `UNINAME_INVALID` if not found.

Macro: ucs4_t UNINAME_INVALID

  This macro expands to a constant that is a special return value of the `unicode_name_character` function.

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