NAME

       btowc - single byte to wide character conversion

SYNOPSIS

       #include <stdio.h>
       #include <wchar.h>

       wint_t btowc(int c);

DESCRIPTION

       The btowc() function shall determine whether c constitutes a valid (one-byte) character in
       the initial shift state.

       The behavior of this function shall be affected by the LC_CTYPE category  of  the  current
       locale.

RETURN VALUE

       The btowc() function shall return WEOF if c has the value EOF or if (unsigned char) c does
       not constitute a valid (one-byte) character in the initial  shift  state.   Otherwise,  it
       shall return the wide-character representation of that character.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       wctob() , the Base Definitions volume of IEEE Std 1003.1-2001, <wchar.h>

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .