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Linux 2.6 - man page for _toupper (linux section 3posix)

_TOUPPER(P)			    POSIX Programmer's Manual			      _TOUPPER(P)

NAME
       _toupper - transliterate lowercase characters to uppercase

SYNOPSIS
       #include <ctype.h>

       int _toupper(int c);

DESCRIPTION
       The  _toupper()	macro  shall be equivalent to toupper() except that the application shall
       ensure that the argument c is a lowercase letter.

RETURN VALUE
       Upon successful completion, _toupper() shall return the uppercase letter corresponding  to
       the argument passed.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       islower()  ,  toupper()	, the Base Definitions volume of IEEE Std 1003.1-2001, Chapter 7,
       Locale, <ctype.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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003				      _TOUPPER(P)


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