Manpages - wctrans.3

wctrans - wide-character translation mapping

  #include <wctype.h>

  wctrans_t wctrans(const char *name);

The wctrans_t type represents a mapping which can map a wide character to another wide character. Its nature is implementation-dependent, but the special value (wctrans_t) 0 denotes an invalid mapping. Nonzero wctrans_t values can be passed to the *towctrans*(3) function to actually perform the wide-character mapping.

The wctrans*() function returns a mapping, given by its name. The set of valid names depends on the *LC_CTYPE category of the current locale, but the following names are valid in all locales.

      "tolower" - realizes the tolower(3) mapping
      "toupper" - realizes the toupper(3) mapping

The *wctrans*() function returns a mapping descriptor if the name is valid. Otherwise, it returns (wctrans_t) 0.

For an explanation of the terms used in this section, see *attributes*(7).

POSIX.1-2001, POSIX.1-2008, C99.

The behavior of wctrans*() depends on the *LC_CTYPE category of the current locale.

*towctrans*(3)

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