.links: Drop obsolete `lib-config.in' file.
[u/mdw/catacomb] / gfreduce-exp.h
1 /* -*-c-*-
2 *
3 * $Id: gfreduce-exp.h,v 1.3 2004/04/08 01:36:15 mdw Exp $
4 *
5 * Exponentiation operations for binary field reduction
6 *
7 * (c) 2004 Straylight/Edgeware
8 */
9
10 /*----- Licensing notice --------------------------------------------------*
11 *
12 * This file is part of Catacomb.
13 *
14 * Catacomb is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU Library General Public License as
16 * published by the Free Software Foundation; either version 2 of the
17 * License, or (at your option) any later version.
18 *
19 * Catacomb is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU Library General Public License for more details.
23 *
24 * You should have received a copy of the GNU Library General Public
25 * License along with Catacomb; if not, write to the Free
26 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
27 * MA 02111-1307, USA.
28 */
29
30 #ifndef CATACOMB_GFREDUCE_EXP_H
31 #define CATACOMB_GFREDUCE_EXP_H
32
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36
37 /*----- Exponentiation definitions ----------------------------------------*/
38
39 #define EXP_TYPE mp *
40
41 #define EXP_COPY(d, x) d = MP_COPY(x)
42 #define EXP_DROP(x) MP_DROP(x)
43
44 #define EXP_MUL(a, x) do { \
45 mp *t = gf_mul(spare, a, x); \
46 spare = a; \
47 a = gfreduce_do(gr, t, t); \
48 } while (0)
49
50 #define EXP_SQR(a) do { \
51 mp *t = gf_sqr(spare, a); \
52 spare = a; \
53 a = gfreduce_do(gr, t, t); \
54 } while (0)
55
56 #define EXP_FIX(x)
57
58 #define EXP_SETMUL(d, x, y) do { \
59 d = gf_mul(MP_NEW, x, y); \
60 d = gfreduce_do(gr, d, d); \
61 } while (0)
62
63 #define EXP_SETSQR(d, x) do { \
64 d = gf_sqr(MP_NEW, x); \
65 d = gfreduce_do(gr, d, d); \
66 } while (0)
67
68 #include "exp.h"
69
70 /*----- That's all, folks -------------------------------------------------*/
71
72 #ifdef __cplusplus
73 }
74 #endif
75
76 #endif