chiark / gitweb /
math/mpx-mul4-x86-sse2.S: Fix operand name in commentary.
[catacomb] / math / mpw.h
CommitLineData
4f3f36ac 1/* -*-c-*-
4f3f36ac 2 *
3 * Very low-level multiprecision definitions
4 *
5 * (c) 1999 Straylight/Edgeware
6 */
7
45c0fd36 8/*----- Licensing notice --------------------------------------------------*
4f3f36ac 9 *
10 * This file is part of Catacomb.
11 *
12 * Catacomb is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Library General Public License as
14 * published by the Free Software Foundation; either version 2 of the
15 * License, or (at your option) any later version.
45c0fd36 16 *
4f3f36ac 17 * Catacomb is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Library General Public License for more details.
45c0fd36 21 *
4f3f36ac 22 * You should have received a copy of the GNU Library General Public
23 * License along with Catacomb; if not, write to the Free
24 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
25 * MA 02111-1307, USA.
26 */
27
b3f05084 28#ifndef CATACOMB_MPW_H
29#define CATACOMB_MPW_H
4f3f36ac 30
31#ifdef __cplusplus
32 extern "C" {
33#endif
34
35/*----- Header files ------------------------------------------------------*/
36
b3f05084 37#ifndef CATACOMB_BITS_H
4f3f36ac 38# include <mLib/bits.h>
39#endif
40
b3f05084 41#ifndef CATACOMB_MPTYPES_H
4f3f36ac 42# include "mptypes.h"
43#endif
44
45/*----- Useful macros -----------------------------------------------------*/
46
47/* --- @MPW@ --- *
48 *
45c0fd36 49 * Arguments: @x@ = an unsigned value
4f3f36ac 50 *
45c0fd36
MW
51 * Use: Expands to the value of @x@ masked and typecast to a
52 * multiprecision integer word.
4f3f36ac 53 */
54
55#define MPW(x) ((mpw)((x) & MPW_MAX))
56
57/* --- @MPWS@ --- *
58 *
45c0fd36 59 * Arguments: @n@ = number of words
4f3f36ac 60 *
45c0fd36
MW
61 * Use: Expands to the number of bytes occupied by a given number of
62 * words.
4f3f36ac 63 */
64
65#define MPWS(n) ((n) * sizeof(mpw))
66
67/* --- @MPW_RQ@ --- *
68 *
69 * Arguments: @sz@ = size of an octet array, in octets
70 *
71 * Use: Expands to the number of @mpw@ words required to represent
72 * the number held in the octet array.
73 */
74
75#define MPW_RQ(sz) (((sz) * 8 + MPW_BITS - 1) / MPW_BITS)
76
77/*----- That's all, folks -------------------------------------------------*/
78
79#ifdef __cplusplus
80 }
81#endif
82
83#endif