wctomb(3) - NetBSD Manual Pages

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WCTOMB(3)               NetBSD Library Functions Manual              WCTOMB(3)


NAME
wctomb -- converts a wide character to a multibyte character
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h> int wctomb(char * s, const wchar_t wchar);
DESCRIPTION
The wctomb() converts the wide character wchar to the corresponding multibyte character, and stores it in the array pointed to by s. wctomb() may store at most MB_CUR_MAX bytes in the array. In state-dependent encoding, wctomb() may store the special sequence to change the conversion state before an actual multibyte character into the array pointed to by s. If wchar is a nul wide character (`\0'), this function sets its own internal state to an initial conversion state. Calling any other functions in Standard C Library (libc, -lc) never changes the internal state of wctomb(), except changing the LC_CTYPE cat- egory of the current locale by calling setlocale(3). Such setlocale(3) calls cause the internal state of this function to be indeterminate. The behaviour of wctomb() is affected by the LC_CTYPE category of the current locale. There is one special case: s == NULL wctomb() initializes its own internal state to an initial state, and determines whether the current encoding is state-dependent. This function returns 0 if the encoding is state-independent, otherwise non-zero. In this case, wchar is completely ignored.
RETURN VALUES
Normally, wctomb() returns: positive Number of bytes for the valid multibyte character pointed to by s. There are no cases that the value returned is greater than n or the value of the MB_CUR_MAX macro. -1 wchar is an invalid wide character. If s is equal to NULL, mbtowc() returns: 0 The current encoding is state-independent. non-zero The current encoding is state-dependent.
ERRORS
No errors are defined.
SEE ALSO
setlocale(3)
STANDARDS
The wctomb() function conforms to ANSI X3.159-1989 (``ANSI C89''). NetBSD 7.1.2 February 3, 2002 NetBSD 7.1.2
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