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1 | /* -*-c-*- |
2 | * |
b817bfc6 |
3 | * $Id: mpbarrett-exp.h,v 1.3 2004/04/08 01:36:15 mdw Exp $ |
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4 | * |
5 | * Exponentiation operations for Barrett reduction |
6 | * |
7 | * (c) 2001 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 | |
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30 | #ifndef CATACOMB_MPBARRETT_EXP_H |
31 | #define CATACOMB_MPBARRETT_EXP_H |
32 | |
33 | #ifdef __cplusplus |
34 | extern "C" { |
35 | #endif |
36 | |
37 | /*----- Exponentation 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 = mp_mul(spare, a, x); \ |
46 | spare = a; \ |
47 | a = mpbarrett_reduce(mb, t, t); \ |
48 | } while (0) |
49 | |
50 | #define EXP_SQR(a) do { \ |
51 | mp *t = mp_sqr(spare, a); \ |
52 | spare = a; \ |
53 | a = mpbarrett_reduce(mb, t, t); \ |
54 | } while (0) |
55 | |
34350998 |
56 | #define EXP_FIX(x) |
57 | |
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58 | #define EXP_SETMUL(d, x, y) do { \ |
59 | d = mp_mul(MP_NEW, x, y); \ |
60 | d = mpbarrett_reduce(mb, d, d); \ |
61 | } while (0) |
62 | |
63 | #define EXP_SETSQR(d, x) do { \ |
64 | d = mp_sqr(MP_NEW, x); \ |
65 | d = mpbarrett_reduce(mb, 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 |