| WCSRTOMBS(3) | Library Functions Manual | WCSRTOMBS(3) | 
wcsrtombs —
#include <wchar.h>
size_t
  
  wcsrtombs(char
    * restrict s, const
    wchar_t ** restrict pwcs,
    size_t n,
    mbstate_t * restrict
  ps);
wcsrtombs() converts the nul-terminated
  wide-character string indirectly pointed to by pwcs to
  the corresponding multibyte character string, and stores it in the array
  pointed to by s. The conversion stops due to the
  following reasons:
wcsrtombs() has already stored
      n bytes in the array pointed to by
      s.Each character will be converted as if wcrtomb(3) is continuously called, except the internal state of wcrtomb(3) will not be affected.
After conversion, if s is not a null pointer, the pointer object pointed to by pwcs is a null pointer (if the conversion is stopped due to reaching a nul wide character) or the first byte of the character just after the last character converted.
If s is not a null pointer and the
    conversion is stopped due to reaching a nul wide character,
    wcsrtombs() places the state object pointed to by
    ps to an initial state after the conversion is taken
    place.
The behaviour of wcsrtombs() is affected
    by the LC_CTYPE category of the current locale.
These are the special cases:
wcsrtombs() returns the number of bytes to store
      the whole multibyte character string corresponding to the wide-character
      string pointed to by pwcs, not including the
      terminating nul byte. In this case, n is
    ignored.wcsrtombs() 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
        wcsrtombs(), which is initialized at startup
        time of the program.
wcsrtombs() returns:
wcsrtombs() also sets
      errno to indicate the error.wcsrtombs() may cause an error in the following case:
EILSEQ]wcsrtombs() function conforms to
  ANSI X3.159-1989 (“ANSI C89”).
  The restrict qualifier is added at ISO/IEC 9899:1999
  (“ISO C99”).
| August 8, 2006 | NetBSD 9.4 |