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WCSRTOMBS(3)		 BSD Library Functions Manual		  WCSRTOMBS(3)

NAME
     wcsrtombs, wcsnrtombs — convert a wide-character string to a character
     string (restartable)

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wchar.h>

     size_t
     wcsrtombs(char * restrict dst, const wchar_t ** restrict src, size_t len,
	 mbstate_t * restrict ps);

     size_t
     wcsnrtombs(char * restrict dst, const wchar_t ** restrict src,
	 size_t nwc, size_t len, mbstate_t * restrict ps);

DESCRIPTION
     The wcsrtombs() function converts a string of wide characters indirectly
     pointed to by src to a corresponding multibyte character string stored in
     the array pointed to by dst.  No more than len bytes are written to dst.

     If dst is NULL, no characters are stored.

     If dst is not NULL, the pointer pointed to by src is updated to point to
     the character after the one that conversion stopped at.  If conversion
     stops because a null character is encountered, *src is set to NULL.

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

     The wcsnrtombs() function behaves identically to wcsrtombs(), except that
     conversion stops after reading at most nwc characters from the buffer
     pointed to by src.

RETURN VALUES
     The wcsrtombs() and wcsnrtombs() functions return the number of bytes
     stored in the array pointed to by dst (not including any terminating
     null), if successful, otherwise it returns (size_t)-1.

ERRORS
     The wcsrtombs() and wcsnrtombs() functions will fail if:

     [EILSEQ]		An invalid wide character was encountered.

     [EINVAL]		The conversion state is invalid.

SEE ALSO
     mbsrtowcs(3), wcrtomb(3), wcstombs(3)

STANDARDS
     The wcsrtombs() function conforms to ISO/IEC 9899:1999 (“ISO C99”).

     The wcsnrtombs() function is an extension to the standard.

BSD				 July 21, 2004				   BSD
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