mbstowcs(3C)						   Standard C Library Functions 					      mbstowcs(3C)

NAME

       mbstowcs - convert a character string to a wide-character string

SYNOPSIS

       #include <stdlib.h>

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

DESCRIPTION

       The  mbstowcs()	function  converts a sequence of characters from the array pointed to by s into a sequence of corresponding wide-character
       codes and stores not more than n wide-character codes into the array pointed to by pwcs. No characters that follow a null  byte	(which	is
       converted  into	a  wide-character  code  with  value  0)  will	be  examined  or converted. Each character is converted as if by a call to
       mbtowc(3C).

       No more than n elements will be modified in the array pointed to by pwcs. If copying takes place between objects that overlap, the behavior
       is undefined.

       The behavior of this function is affected by the LC_CTYPE category of the current locale. If pwcs is a null pointer, mbstowcs() returns the
       length required to convert the entire array regardless of the value of n, but no values are stored.

RETURN VALUES

       If an invalid character is encountered, mbstowcs() returns (size_t)-1 and may set  errno  to  indicate  the  error.  Otherwise,	mbstowcs()
       returns the number of the array elements modified (or required if pwcs is NULL), not including a terminating 0 code, if any. The array will
       not be zero-terminated if the value returned is n.

ERRORS

       The mbstowcs() function may fail if:

       EILSEQ	       Invalid byte sequence is detected.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mblen(3C), mbtowc(3C), setlocale(3C), wcstombs(3C), wctomb(3C), attributes(5), standards(5)

SunOS 5.10							    1 Nov 2003							      mbstowcs(3C)