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).
| Interface |
Attribute |
Value |
| wctrans () |
Thread safety |
MT-Safe locale |
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of
wctrans() depends on the
LC_CTYPE category of the
current locale.
towctrans(3)