Commit | Line | Data |
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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 |