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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
+.TH "TOUPPER" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" toupper
+.SH NAME
+toupper \- transliterate lowercase characters to uppercase
+.SH SYNOPSIS
+.LP
+\fB#include <ctype.h>
+.br
+.sp
+int toupper(int\fP \fIc\fP\fB);
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fItoupper\fP() function has as a domain a type \fBint\fP, the
+value of which is representable as an \fBunsigned char\fP
+or the value of EOF. If the argument has any other value, the behavior
+is undefined. If the argument of \fItoupper\fP() represents
+a lowercase letter, and there exists a corresponding uppercase letter
+\ (as defined by character type information in the program
+locale category \fILC_CTYPE ),\fP the result shall be the
+corresponding uppercase letter. All other arguments in the domain
+are returned unchanged.
+.SH RETURN VALUE
+.LP
+Upon successful completion, \fItoupper\fP() shall return the uppercase
+letter corresponding to the argument passed.
+.SH ERRORS
+.LP
+No errors are defined.
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+None.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIsetlocale\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001,
+Chapter 7, Locale, \fI<ctype.h>\fP
+.SH 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 .