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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: mpw.h,v 1.2 1999/12/10 23:29:48 mdw Exp $ |
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4 | * |
5 | * Very low-level multiprecision definitions |
6 | * |
7 | * (c) 1999 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 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: mpw.h,v $ |
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33 | * Revision 1.2 1999/12/10 23:29:48 mdw |
34 | * Change header file guard names. |
35 | * |
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36 | * Revision 1.1 1999/11/13 01:52:34 mdw |
37 | * Very low-level definitions for MP types. |
38 | * |
39 | * Revision 1.1 1999/11/13 01:50:17 mdw |
40 | * Veyr low level definitions for MP types. |
41 | * |
42 | */ |
43 | |
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44 | #ifndef CATACOMB_MPW_H |
45 | #define CATACOMB_MPW_H |
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46 | |
47 | #ifdef __cplusplus |
48 | extern "C" { |
49 | #endif |
50 | |
51 | /*----- Header files ------------------------------------------------------*/ |
52 | |
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53 | #ifndef CATACOMB_BITS_H |
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54 | # include <mLib/bits.h> |
55 | #endif |
56 | |
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57 | #ifndef CATACOMB_MPTYPES_H |
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58 | # include "mptypes.h" |
59 | #endif |
60 | |
61 | /*----- Useful macros -----------------------------------------------------*/ |
62 | |
63 | /* --- @MPW@ --- * |
64 | * |
65 | * Arguments: @x@ = an unsigned value |
66 | * |
67 | * Use: Expands to the value of @x@ masked and typecast to a |
68 | * multiprecision integer word. |
69 | */ |
70 | |
71 | #define MPW(x) ((mpw)((x) & MPW_MAX)) |
72 | |
73 | /* --- @MPWS@ --- * |
74 | * |
75 | * Arguments: @n@ = number of words |
76 | * |
77 | * Use: Expands to the number of bytes occupied by a given number of |
78 | * words. |
79 | */ |
80 | |
81 | #define MPWS(n) ((n) * sizeof(mpw)) |
82 | |
83 | /* --- @MPW_RQ@ --- * |
84 | * |
85 | * Arguments: @sz@ = size of an octet array, in octets |
86 | * |
87 | * Use: Expands to the number of @mpw@ words required to represent |
88 | * the number held in the octet array. |
89 | */ |
90 | |
91 | #define MPW_RQ(sz) (((sz) * 8 + MPW_BITS - 1) / MPW_BITS) |
92 | |
93 | /*----- That's all, folks -------------------------------------------------*/ |
94 | |
95 | #ifdef __cplusplus |
96 | } |
97 | #endif |
98 | |
99 | #endif |