@node _toupper
@section @code{_toupper}
@findex _toupper

POSIX specification: @url{http://www.opengroup.org/susv3xsh/_toupper.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
MacOS X 10.3.
@end itemize