.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
.\"
+.\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA)
.\" 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.
+.\" %%%LICENSE_END
.\"
.\" 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
+.\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
.\" ISO/IEC 9899:1999
.\"
.TH ISWUPPER 3 1999-07-25 "GNU" "Linux Programmer's Manual"
function is the wide-character equivalent of the
.BR isupper (3)
function.
-It tests whether \fIwc\fP is a wide character
+It tests whether
+.I wc
+is a wide character
belonging to the wide-character class "upper".
.PP
The wide-character class "upper" is a subclass of the wide-character class
Being a subclass of the wide-character class "alpha", the wide-character class
"upper" is disjoint from the wide-character class "digit".
.PP
-The wide-character class "upper" contains at least those characters \fIwc\fP
-which are equal to \fItowupper(wc)\fP and different from \fItowlower(wc)\fP.
+The wide-character class "upper" contains at least those characters
+.I wc
+which are equal to
+.I towupper(wc)
+and different from
+.IR towlower(wc) .
.PP
The wide-character class "upper" always contains at least the
letters \(aqA\(aq to \(aqZ\(aq.
-.SH "RETURN VALUE"
+.SH RETURN VALUE
The
.BR iswupper ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns nonzero if
+.I wc
+is a wide character
belonging to the wide-character class "upper".
-Otherwise it returns zero.
-.SH "CONFORMING TO"
+Otherwise, it returns zero.
+.SH CONFORMING TO
C99.
.SH NOTES
The behavior of
.PP
This function is not very appropriate for dealing with Unicode characters,
because Unicode knows about three cases: upper, lower and title case.
-.SH "SEE ALSO"
+.SH SEE ALSO
.BR isupper (3),
.BR iswctype (3),
.BR towupper (3)
+.SH COLOPHON
+This page is part of release 3.79 of the Linux
+.I man-pages
+project.
+A description of the project,
+information about reporting bugs,
+and the latest version of this page,
+can be found at
+\%http://www.kernel.org/doc/man\-pages/.