tail head cat sleep
QR code linking to this page

Manual Pages  — WCRTOMB

NAME

wcrtomb, c16rtomb, c32rtomb – convert a wide-character code to a character (restartable)

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <wchar.h>

size_t
wcrtomb(char * restrict s, wchar_t c, mbstate_t * restrict ps);
#include <uchar.h>

size_t
c16rtomb(char * restrict s, char16_t c, mbstate_t * restrict ps);

size_t
c32rtomb(char * restrict s, char32_t c, mbstate_t * restrict ps);

DESCRIPTION

The wcrtomb(), c16rtomb() and c32rtomb() functions store a multibyte sequence representing the wide character c, including any necessary shift sequences, to the character array s, storing a maximum of MB_CUR_MAX bytes.

If s is NULL, these functions behave as if s pointed to an internal buffer and c was a null wide character (L'\0').

The mbstate_t argument, ps, is used to keep track of the shift state. If it is NULL, these functions use an internal, static mbstate_t object, which is initialized to the initial conversion state at program startup.

As certain multibyte characters may only be represented by a series of 16-bit characters, the c16rtomb() may need to invoked multiple times before a multibyte sequence is returned.

RETURN VALUES

These functions return the length (in bytes) of the multibyte sequence needed to represent c, or (size_t )-1 if c is not a valid wide character code.

ERRORS

The wcrtomb(), c16rtomb() and c32rtomb() functions will fail if:
[EILSEQ]
  An invalid wide character code was specified.
[EINVAL]
  The conversion state is invalid.

SEE ALSO

mbrtowc(3), multibyte(3), setlocale(3), wctomb(3)

STANDARDS

The wcrtomb(), c16rtomb() and c32rtomb() functions conform to ISO/IEC .

WCRTOMB (3) May 21, 2013

tail head cat sleep
QR code linking to this page


Please direct any comments about this manual page service to Ben Bullock. Privacy policy.

If you sat a monkey down in front of a keyboard, the first thing typed would be a unix command.
— Bill Lye