TOWUPPER(P) POSIX Programmer's Manual TOWUPPER(P)NAMEtowupper - transliterate lowercase wide-character code to uppercase
SYNOPSIS
#include <wctype.h>
wint_t towupper(wint_t wc);
DESCRIPTION
The towupper() function has as a domain a type wint_t, the value of
which the application shall ensure is a character representable as a
wchar_t, and a wide-character code corresponding to a valid character
in the current locale or the value of WEOF. If the argument has any
other value, the behavior is undefined. If the argument of towupper()
represents a lowercase wide-character code, and there exists a corre‐
sponding uppercase wide-character code (as defined by character type
information in the program locale category LC_CTYPE ), the result shall
be the corresponding uppercase wide-character code. All other argu‐
ments in the domain are returned unchanged.
RETURN VALUE
Upon successful completion, towupper() shall return the uppercase let‐
ter corresponding to the argument passed. Otherwise, it shall return
the argument unchanged.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSOsetlocale() , the Base Definitions volume of IEEE Std 1003.1-2001,
Chapter 7, Locale, <wctype.h>, <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 .
IEEE/The Open Group 2003 TOWUPPER(P)
