Linux manual pages Section 3  

Name

towupper — convert a wide character to uppercase

Synopsis

#include <wctype.h>
wint_t towupper( wint_t wc);
 

DESCRIPTION

The towupper() function is the wide-character equivalent of the toupper(3) function. If wc is a wide character, it is converted to uppercase. Characters which do not have case are returned unchanged. If wc is WEOF, WEOF is returned.

RETURN VALUE

The towupper() function returns the uppercase equivalent of wc, or WEOF if wc is WEOF.

CONFORMING TO

C99.

NOTES

The behavior of towupper() depends on the LC_CTYPE category of the current locale.

This function is not very appropriate for dealing with Unicode characters, because Unicode knows about three cases: upper, lower and title case.

SEE ALSO

iswupper(3), towctrans(3), towlower(3)

COLOPHON

This page is part of release 3.24 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


  Copyright (c) Bruno Haible <haibleclisp.cons.org>

This is free documentation; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.

References consulted:
  GNU glibc-2 source code and manual
  Dinkumware C library reference http://www.dinkumware.com/
  OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
  ISO/IEC 9899:1999