1WCTOMB(3)                  Linux Programmer's Manual                 WCTOMB(3)
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NAME

6       wctomb - convert a wide character to a multibyte sequence
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SYNOPSIS

9       #include <stdlib.h>
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11       int wctomb(char *s, wchar_t wc);
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DESCRIPTION

14       If  s is not NULL, the wctomb() function converts the wide character wc
15       to its multibyte representation and stores it at the beginning  of  the
16       character  array pointed to by s.  It updates the shift state, which is
17       stored in a static anonymous variable only known to  the  wctomb  func‐
18       tion, and returns the length of said multibyte representation, that is,
19       the number of bytes written at s.
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21       The programmer must ensure that there is room for at  least  MB_CUR_MAX
22       bytes at s.
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24       If  s is NULL, the wctomb() function resets the shift state, only known
25       to this function, to the initial state, and  returns  non-zero  if  the
26       encoding  has nontrivial shift state, or zero if the encoding is state‐
27       less.
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RETURN VALUE

30       If s is not NULL, the wctomb() function returns  the  number  of  bytes
31       that have been written to the byte array at s.  If wc can not be repre‐
32       sented as a multibyte sequence (according to the current locale), -1 is
33       returned.
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35       If  s  is  NULL, the wctomb() function returns non-zero if the encoding
36       has nontrivial shift state, or zero if the encoding is stateless.
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CONFORMING TO

39       C99.
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NOTES

42       The behavior of wctomb() depends on the LC_CTYPE category of  the  cur‐
43       rent locale.
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45       This  function  is  not multithread safe.  The function wcrtomb(3) pro‐
46       vides a better interface to the same functionality.
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SEE ALSO

49       MB_CUR_MAX(3), wcrtomb(3), wcstombs(3)
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COLOPHON

52       This page is part of release 3.22 of the Linux  man-pages  project.   A
53       description  of  the project, and information about reporting bugs, can
54       be found at http://www.kernel.org/doc/man-pages/.
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58GNU                               1999-07-25                         WCTOMB(3)
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