xref: /onnv-gate/usr/src/lib/libxcurses2/h/m_ord.h (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright (c) 1996-1998 by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate  * All rights reserved.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*0Sstevel@tonic-gate 
29*0Sstevel@tonic-gate /*
30*0Sstevel@tonic-gate  * m_ord.h
31*0Sstevel@tonic-gate  *
32*0Sstevel@tonic-gate  * Copyright 1986, 1992 by Mortice Kern Systems Inc.  All rights reserved.
33*0Sstevel@tonic-gate  *
34*0Sstevel@tonic-gate  * $Header: /rd/h/rcs/m_ord.h 1.15 1994/05/29 16:17:02 mark Exp $
35*0Sstevel@tonic-gate  */
36*0Sstevel@tonic-gate 
37*0Sstevel@tonic-gate #ifndef __M_M_ORD_H__
38*0Sstevel@tonic-gate #define	__M_M_ORD_H__
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate #ifndef UCHAR_MAX
41*0Sstevel@tonic-gate #include <limits.h>
42*0Sstevel@tonic-gate #endif
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate /*
45*0Sstevel@tonic-gate  * Used with CURSES in order to decern whether or not 'x' is a byte
46*0Sstevel@tonic-gate  * or a KEY_xxxx macro, which are defined to be values greater than
47*0Sstevel@tonic-gate  * UCHAR_MAX.
48*0Sstevel@tonic-gate  */
49*0Sstevel@tonic-gate #define	m_ischarset(x)	((unsigned)(x) <= UCHAR_MAX)
50*0Sstevel@tonic-gate 
51*0Sstevel@tonic-gate /* ASCII based macros */
52*0Sstevel@tonic-gate /*
53*0Sstevel@tonic-gate  * m_ord(c) : convert alpha character(case insensitive) to an an ordinal value.
54*0Sstevel@tonic-gate  *            if c is an alphabetic character (A-Z,a-z), this returns
55*0Sstevel@tonic-gate  *            a number between 1 and 26
56*0Sstevel@tonic-gate  * m_chr(i) : convert an ordinal value to its corresponding alpha character
57*0Sstevel@tonic-gate  *            using the reverse mapping as m_ord().
58*0Sstevel@tonic-gate  *            if i is a number between 1 and 26 it returns the corresponding
59*0Sstevel@tonic-gate  *            alphabetic character A to Z
60*0Sstevel@tonic-gate  */
61*0Sstevel@tonic-gate #include <ctype.h>
62*0Sstevel@tonic-gate 
63*0Sstevel@tonic-gate #define	m_ord(c) \
64*0Sstevel@tonic-gate 	((m_ischarset(c) && ('A' <= toupper(c) && toupper(c) <= 'Z')) ? \
65*0Sstevel@tonic-gate 	(toupper(c) - '@') : -1)
66*0Sstevel@tonic-gate #define	m_chr(c)	((1 <= c && c <= 26) ? (c + '@') : -1)
67*0Sstevel@tonic-gate 
68*0Sstevel@tonic-gate #endif /* __M_M_ORD_H__ */
69