man3/towupper.3

   1 .\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
   2 .\"
   3 .\" This is free documentation; you can redistribute it and/or
   4 .\" modify it under the terms of the GNU General Public License as
   5 .\" published by the Free Software Foundation; either version 2 of
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   8 .\" References consulted:
   9 .\"   GNU glibc-2 source code and manual
  10 .\"   Dinkumware C library reference http://www.dinkumware.com/
  11 .\"   OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html
  12 .\"   ISO/IEC 9899:1999
  13 .\"
  14 .TH TOWUPPER 3  1999-07-25 "GNU" "Linux Programmer's Manual"
  15 .SH NAME
  16 towupper \- convert a wide character to uppercase
  17 .SH SYNOPSIS
  18 .nf
  19 .B #include <wctype.h>
  20 .sp
  21 .BI "wint_t towupper(wint_t " wc );
  22 .fi
  23 .SH DESCRIPTION
  24 The \fBtowupper\fP() function is the wide-character equivalent of the
  25 \fBtoupper\fP() function.
  26 If \fIwc\fP is a wide character, it is converted to
  27 uppercase.
  28 Characters which do not have case are returned unchanged.
  29 If \fIwc\fP is WEOF, WEOF is returned.
  30 .SH "RETURN VALUE"
  31 The \fBtowupper\fP() function returns the uppercase equivalent of \fIwc\fP,
  32 or WEOF if \fIwc\fP is WEOF.
  33 .SH "CONFORMING TO"
  34 C99.
  35 .SH "SEE ALSO"
  36 .BR iswupper (3),
  37 .BR towctrans (3),
  38 .BR towlower (3)
  39 .SH NOTES
  40 The behaviour of \fBtowupper\fP() depends on the LC_CTYPE category of the
  41 current locale.
  42 .PP
  43 This function is not very appropriate for dealing with Unicode characters,
  44 because Unicode knows about three cases: upper, lower and title case.