chiark / gitweb /
rand/rand.c: Mix the pool key in `rand_gate' and `rand_stretch'.
[catacomb] / math / mpbarrett-exp.h
CommitLineData
f7ea7527 1/* -*-c-*-
f7ea7527 2 *
3 * Exponentiation operations for Barrett reduction
4 *
5 * (c) 2001 Straylight/Edgeware
6 */
7
45c0fd36 8/*----- Licensing notice --------------------------------------------------*
f7ea7527 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 *
f7ea7527 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 *
f7ea7527 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
f7ea7527 28#ifndef CATACOMB_MPBARRETT_EXP_H
29#define CATACOMB_MPBARRETT_EXP_H
30
31#ifdef __cplusplus
32 extern "C" {
33#endif
34
35/*----- Exponentation definitions -----------------------------------------*/
36
37#define EXP_TYPE mp *
38
39#define EXP_COPY(d, x) d = MP_COPY(x)
40#define EXP_DROP(x) MP_DROP(x)
41
42#define EXP_MUL(a, x) do { \
43 mp *t = mp_mul(spare, a, x); \
44 spare = a; \
45 a = mpbarrett_reduce(mb, t, t); \
46} while (0)
47
48#define EXP_SQR(a) do { \
49 mp *t = mp_sqr(spare, a); \
50 spare = a; \
51 a = mpbarrett_reduce(mb, t, t); \
52} while (0)
53
34350998 54#define EXP_FIX(x)
55
f7ea7527 56#define EXP_SETMUL(d, x, y) do { \
57 d = mp_mul(MP_NEW, x, y); \
58 d = mpbarrett_reduce(mb, d, d); \
59} while (0)
60
61#define EXP_SETSQR(d, x) do { \
62 d = mp_sqr(MP_NEW, x); \
63 d = mpbarrett_reduce(mb, d, d); \
64} while (0)
65
66#include "exp.h"
67
68/*----- That's all, folks -------------------------------------------------*/
69
70#ifdef __cplusplus
71 }
72#endif
73
74#endif