WCTOMB(3C) Standard C Library Functions WCTOMB(3C)


NAME


wctomb, wctomb_l - convert a wide-character code to a character

SYNOPSIS


#include <stdlib.h>

int wctomb(char *s, wchar_t wchar);

#include <stdlib.h>
#include <xlocale.h>

int wctomb_l(char *s, wchar_t wchar, locale_t loc);

DESCRIPTION


The wctomb() function determines the number of bytes needed to represent
the character corresponding to the wide-character code whose value is
wchar. It stores the character representation (possibly multiple bytes)
in the array object pointed to by s (if s is not a null pointer). At
most MB_CUR_MAX bytes are stored.

A call with s as a null pointer causes this function to return 0. The
behavior of this function is affected by the LC_CTYPE category of the
current locale.

The function wctomb_l() behaves identically to wctomb(), except instead
of operating in the current locale, it operates in the locale specified
by loc.

RETURN VALUES


If s is a null pointer, wctomb() returns 0 value. If s is not a null
pointer, wctomb() returns -1 if the value of wchar does not correspond to
a valid character, or returns the number of bytes that constitute the
character corresponding to the value of wchar.

In no case will the value returned be greater than the value of the
MB_CUR_MAX macro.

ERRORS


No errors are defined.

ATTRIBUTES


See attributes(5) for descriptions of the following attributes:

+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|CSI | Enabled |
+--------------------+-----------------+
|Interface Stability | See below. |
+--------------------+-----------------+
|MT-Level | MT-Safe |
+--------------------+-----------------+

The wctomb() function is Standard. The wctomb_l() function is
Uncommitted.

SEE ALSO


mblen(3C), mbstowcs(3C), mbtowc(3C), newlocale(3C), setlocale(3C),
uselocale(3C), wcstombs(3C), attributes(5), standards(5)


June 25, 2014 WCTOMB(3C)