wctomb man page on Minix

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WCTOMB(3)		 BSD Library Functions Manual		     WCTOMB(3)

NAME
     wctomb — converts a wide character to a multibyte character

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     int
     wctomb(char * s, const wchar_t wchar);

DESCRIPTION
     The wctomb() converts the wide character wchar to the corresponding
     multibyte character, and stores it in the array pointed to by s.
     wctomb() may store at most MB_CUR_MAX bytes in the array.

     In state-dependent encoding, wctomb() may store the special sequence to
     change the conversion state before an actual multibyte character into the
     array pointed to by s.  If wchar is a nul wide character (‘\0’), this
     function sets its own internal state to an initial conversion state.

     Calling any other functions in Standard C Library (libc, -lc) never
     changes the internal state of wctomb(), except changing the LC_CTYPE cat‐
     egory of the current locale by calling setlocale(3).  Such setlocale(3)
     calls cause the internal state of this function to be indeterminate.

     The behaviour of wctomb() is affected by the LC_CTYPE category of the
     current locale.

     There is one special case:

     s == NULL	   wctomb() initializes its own internal state to an initial
		   state, and determines whether the current encoding is
		   state-dependent.  This function returns 0 if the encoding
		   is state-independent, otherwise non-zero.  In this case,
		   wchar is completely ignored.

RETURN VALUES
     Normally, wctomb() returns:

     positive	   Number of bytes for the valid multibyte character pointed
		   to by s.  There are no cases that the value returned is
		   greater than n or the value of the MB_CUR_MAX macro.

     -1		   wchar is an invalid wide character.

     If s is equal to NULL, mbtowc() returns:

     0		 The current encoding is state-independent.

     non-zero	 The current encoding is state-dependent.

ERRORS
     No errors are defined.

SEE ALSO
     setlocale(3)

STANDARDS
     The wctomb() function conforms to ANSI X3.159-1989 (“ANSI C89”).

BSD			       February 3, 2002				   BSD
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