/*
 * CDE - Common Desktop Environment
 *
 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
 *
 * These libraries and programs are free software; you can
 * redistribute them and/or modify them under the terms of the GNU
 * Lesser General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * These libraries and programs are distributed in the hope that
 * they will be useful, but WITHOUT ANY WARRANTY; without even the
 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE. See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with these librararies and programs; if not, write
 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301 USA
 */
/* $XConsortium: letter.c /main/3 1995/11/08 11:06:23 rswiston $ */
/* Copyright 1987, 1988, 1989 Hewlett-Packard Co. */

/* Tests whether a character is a letter */

#include "basic.h"

LOGICAL m_letter(
#if defined(M_PROTO)
  M_WCHAR c
#endif
  ) ;

#if defined(M_PROTO)
LOGICAL m_letter(M_WCHAR c)
#else
LOGICAL m_letter(c)
  M_WCHAR c ;
#endif
{
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) return(TRUE) ;
return(FALSE) ;
}