man3/towupper.3

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