WCTRANS(3) manual page
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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.
The wctrans() function is thread-safe with exceptions. It
can be safely used in multithreaded applications, as long as setlocale(3)
is not called to change the locale during its execution.
C99.
The behavior of wctrans() depends on the LC_CTYPE category of the
current locale.
towctrans(3)
This page is part of release
3.78 of the Linux man-pages project. A description of the project, information
about reporting bugs, and the latest version of this page, can be found
at http://www.kernel.org/doc/man-pages/.
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