WCRTOMB(3) | Library Functions Manual | WCRTOMB(3) |
wcrtomb
—
#include <wchar.h>
size_t
wcrtomb
(char
* restrict s, wchar_t
wc, mbstate_t * restrict
ps);
wcrtomb
() converts the wide character given by
wc to the corresponding multibyte character, and stores
it in the array pointed to by s unless
s is a null pointer. This function will modify the first
at most MB_CUR_MAX
bytes of the array pointed to by
s.
The behaviour of wcrtomb
() is affected by
the LC_CTYPE
category of the current locale.
These are the special cases:
wcrtomb
() stores a
nul byte preceded by special byte sequence (if any) to return to an
initial state in the array pointed to by s, and the
state object pointed to by ps also returns to an
initial state.wcrtomb
() just places ps
into an initial state. It is equivalent to the following call:
wcrtomb(buf, L'\0', ps);
Here, buf is a dummy buffer. In this case, wc is ignored.
mbrtowc
() uses its own internal state object to
keep the conversion state, instead of ps mentioned
in this manual page.
Calling any other functions in Standard
C Library (libc, -lc) never changes the internal state of
mbrtowc
(), which is initialized at startup time
of the program.
wcrtomb
() returns:
wcrtomb
() also sets errno to
indicate the error.wcrtomb
() may cause an error in the following case:
wcrtomb
() function conforms to
ISO/IEC 9899/AMD1:1995 (“ISO C90, Amendment
1”). The restrict qualifier is added at ISO/IEC
9899:1999 (“ISO C99”).
February 4, 2002 | NetBSD 9.2 |