trusty (3) _toupper.3posix.gz

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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>


       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 .