.\" Copyright (c) 1989, 1991 The Regents of the University of California.
.\" This code is derived from software contributed to Berkeley by
.\" the American National Standards Committee X3, on Information
.\" %sccs.include.redist.man%
.\" @(#)toupper.3 5.2 (Berkeley) %G%
.Nd lower case to upper case letter conversion
function converts a lower-case letter to the corresponding
If the argument is a lower-case letter, the
function returns the corresponding upper-case letter if there is
one; otherwise the argument is returned unchanged.
.\" maps only the characters for which
.\" is true to the corresponding characters for which