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wctomb - convert a wide character to a multibyte sequence
#include <stdlib.h>
int wctomb (char* s, wchar_t wc);
If s is not NULL, the wctomb
function converts the wide character wc to its multibyte representation
and stores it at the beginning of the character array pointed to by s. It
updates the shift state, which is stored in a static anonymous variable
only known to the wctomb function, and returns the length of said multibyte
representation, i.e. the number of bytes written at s.
The programmer must
ensure that there is room for at least MB_CUR_MAX bytes at s.
If s is NULL,
the wctomb function resets the shift state, only known to this function,
to the initial state, and returns non-zero if the encoding has non-trivial
shift state, or zero if the encoding is stateless.
If s is not
NULL, the wctomb function returns the number of bytes that have been written
to the byte array at s. If wc can not be represented as a multibyte sequence
(according to the current locale), -1 is returned.
If s is NULL, the wctomb
function returns non-zero if the encoding has non-trivial shift state, or
zero if the encoding is stateless.
ISO/ANSI C, UNIX98
wcrtomb(3)
,
wcstombs(3)
, MB_CUR_MAX(3)
The behaviour of wctomb depends on the
LC_CTYPE category of the current locale.
This function is not multi-thread
safe. The function wcrtomb provides a better interface to the same functionality.
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