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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON |
WCTOMB(3) Linux Programmer's Manual WCTOMB(3)
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 known only to the
wctomb() function, and returns the length of said multibyte
representation, that is, 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, known
only to this function, to the initial state, and returns nonzero if
the encoding has nontrivial 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 nonzero if the encoding
has nontrivial shift state, or zero if the encoding is stateless.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├──────────┼───────────────┼────────────────┤
│wctomb() │ Thread safety │ MT-Unsafe race │
└──────────┴───────────────┴────────────────┘
POSIX.1-2001, POSIX.1-2008, C99.
The behavior of wctomb() depends on the LC_CTYPE category of the
current locale.
The function wcrtomb(3) provides a better interface to the same
functionality.
MB_CUR_MAX(3), mblen(3), mbstowcs(3), mbtowc(3), wcrtomb(3),
wcstombs(3)
This page is part of release 4.12 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
https://www.kernel.org/doc/man-pages/.
GNU 2015-08-08 WCTOMB(3)
Pages that refer to this page: MB_CUR_MAX(3), mbstowcs(3), mbtowc(3), wcstombs(3), wctob(3), locale(7), unicode(7)