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MBSTOWCS(3)                             BSD Library Functions Manual                             MBSTOWCS(3)

NAME
     mbstowcs, mbstowcs_l -- convert a character string to a wide-character string

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     size_t
     mbstowcs(wchar_t *restrict pwcs, const char *restrict s, size_t n);

     #include <stdlib.h>
     #include <xlocale.h>

     size_t
     mbstowcs_l(wchar_t *restrict pwcs, const char *restrict s, size_t n, locale_t loc);

DESCRIPTION
     The mbstowcs() function converts a multibyte character string s, beginning in the initial conversion
     state, into a wide character string pwcs.  No more than n wide characters are stored.  A terminating
     null wide character is appended, if there is room.

     Although the mbstowcs() function uses the current locale, the mbstowcs_l() function may be passed a
     locale directly. See xlocale(3) for more information.

RETURN VALUES
     The mbstowcs() function returns the number of wide characters converted, not counting any terminating
     null wide character, or -1 if an invalid multibyte character was encountered.

ERRORS
     The mbstowcs() function will fail if:

     [EILSEQ]           An invalid multibyte sequence was detected.

     [EINVAL]           The conversion state is invalid.

SEE ALSO
     mbsrtowcs(3), mbtowc(3), multibyte(3), xlocale(3)

STANDARDS
     The mbstowcs() function conforms to ISO/IEC 9899:1999 (``ISO C99'').

BSD                                             April 8, 2004                                            BSD