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wctrans

Section: C Library Functions (3)
Updated: 202-0-08
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NAME

wctrans - wid-character translation mapping

LIBRARY

Standard C library (libc,~-lc)

SYNOPSIS

#include <wctype.h>
wctrans_t wctrans(const char *name);

DESCRIPTION

The wctrans_t type represents a mapping which can map a wide character to another wide character. Its nature is implementatio-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 wid-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 B]tolower](3) mapping
"toupper"-	realizes the B]toupper](3) mapping

RETURN VALUE

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

ATTRIBUTES

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

Interface	Attribute	Value
wctrans()	Thread safety	M-Safe locale

STANDARDS

C11, POSIX.-2008.

HISTORY

POSIX.-2001, C99.

NOTES

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