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comparison: src/protocols/sametime/meanwhile/mpi/mpi.h

src/protocols/sametime/meanwhile/mpi/mpi.h

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1 /*
2 mpi.h
3
4 by Michael J. Fromberger <http://www.dartmouth.edu/~sting/>
5 Copyright (C) 1998 Michael J. Fromberger, All Rights Reserved
6
7 Arbitrary precision integer arithmetic library
8
9 $Id: mpi.h 14563 2005-11-29 23:31:40Z taliesein $
10 */
11
12 #ifndef _H_MPI_
13 #define _H_MPI_
14
15 #include "mpi-config.h"
16
17 #if MP_DEBUG
18 #undef MP_IOFUNC
19 #define MP_IOFUNC 1
20 #endif
21
22 #if MP_IOFUNC
23 #include <stdio.h>
24 #include <ctype.h>
25 #endif
26
27 #include <limits.h>
28
29 #define MP_NEG 1
30 #define MP_ZPOS 0
31
32 /* Included for compatibility... */
33 #define NEG MP_NEG
34 #define ZPOS MP_ZPOS
35
36 #define MP_OKAY 0 /* no error, all is well */
37 #define MP_YES 0 /* yes (boolean result) */
38 #define MP_NO -1 /* no (boolean result) */
39 #define MP_MEM -2 /* out of memory */
40 #define MP_RANGE -3 /* argument out of range */
41 #define MP_BADARG -4 /* invalid parameter */
42 #define MP_UNDEF -5 /* answer is undefined */
43 #define MP_LAST_CODE MP_UNDEF
44
45 #include "mpi-types.h"
46
47 /* Included for compatibility... */
48 #define DIGIT_BIT MP_DIGIT_BIT
49 #define DIGIT_MAX MP_DIGIT_MAX
50
51 /* Macros for accessing the mp_int internals */
52 #define SIGN(MP) ((MP)->sign)
53 #define USED(MP) ((MP)->used)
54 #define ALLOC(MP) ((MP)->alloc)
55 #define DIGITS(MP) ((MP)->dp)
56 #define DIGIT(MP,N) (MP)->dp[(N)]
57
58 #if MP_ARGCHK == 1
59 #define ARGCHK(X,Y) {if(!(X)){return (Y);}}
60 #elif MP_ARGCHK == 2
61 #include <assert.h>
62 #define ARGCHK(X,Y) assert(X)
63 #else
64 #define ARGCHK(X,Y) /* */
65 #endif
66
67 /* This defines the maximum I/O base (minimum is 2) */
68 #define MAX_RADIX 64
69
70 typedef struct {
71 mp_sign sign; /* sign of this quantity */
72 mp_size alloc; /* how many digits allocated */
73 mp_size used; /* how many digits used */
74 mp_digit *dp; /* the digits themselves */
75 } mp_int;
76
77 /*------------------------------------------------------------------------*/
78 /* Default precision */
79
80 unsigned int mp_get_prec(void);
81 void mp_set_prec(unsigned int prec);
82
83 /*------------------------------------------------------------------------*/
84 /* Memory management */
85
86 mp_err mp_init(mp_int *mp);
87 mp_err mp_init_array(mp_int mp[], int count);
88 mp_err mp_init_size(mp_int *mp, mp_size prec);
89 mp_err mp_init_copy(mp_int *mp, mp_int *from);
90 mp_err mp_copy(mp_int *from, mp_int *to);
91 void mp_exch(mp_int *mp1, mp_int *mp2);
92 void mp_clear(mp_int *mp);
93 void mp_clear_array(mp_int mp[], int count);
94 void mp_zero(mp_int *mp);
95 void mp_set(mp_int *mp, mp_digit d);
96 mp_err mp_set_int(mp_int *mp, long z);
97
98 /*------------------------------------------------------------------------*/
99 /* Single digit arithmetic */
100
101 mp_err mp_add_d(mp_int *a, mp_digit d, mp_int *b);
102 mp_err mp_sub_d(mp_int *a, mp_digit d, mp_int *b);
103 mp_err mp_mul_d(mp_int *a, mp_digit d, mp_int *b);
104 mp_err mp_mul_2(mp_int *a, mp_int *c);
105 mp_err mp_div_d(mp_int *a, mp_digit d, mp_int *q, mp_digit *r);
106 mp_err mp_div_2(mp_int *a, mp_int *c);
107 mp_err mp_expt_d(mp_int *a, mp_digit d, mp_int *c);
108
109 /*------------------------------------------------------------------------*/
110 /* Sign manipulations */
111
112 mp_err mp_abs(mp_int *a, mp_int *b);
113 mp_err mp_neg(mp_int *a, mp_int *b);
114
115 /*------------------------------------------------------------------------*/
116 /* Full arithmetic */
117
118 mp_err mp_add(mp_int *a, mp_int *b, mp_int *c);
119 mp_err mp_sub(mp_int *a, mp_int *b, mp_int *c);
120 mp_err mp_mul(mp_int *a, mp_int *b, mp_int *c);
121 mp_err mp_mul_2d(mp_int *a, mp_digit d, mp_int *c);
122 #if MP_SQUARE
123 mp_err mp_sqr(mp_int *a, mp_int *b);
124 #else
125 #define mp_sqr(a, b) mp_mul(a, a, b)
126 #endif
127 mp_err mp_div(mp_int *a, mp_int *b, mp_int *q, mp_int *r);
128 mp_err mp_div_2d(mp_int *a, mp_digit d, mp_int *q, mp_int *r);
129 mp_err mp_expt(mp_int *a, mp_int *b, mp_int *c);
130 mp_err mp_2expt(mp_int *a, mp_digit k);
131 mp_err mp_sqrt(mp_int *a, mp_int *b);
132
133 /*------------------------------------------------------------------------*/
134 /* Modular arithmetic */
135
136 #if MP_MODARITH
137 mp_err mp_mod(mp_int *a, mp_int *m, mp_int *c);
138 mp_err mp_mod_d(mp_int *a, mp_digit d, mp_digit *c);
139 mp_err mp_addmod(mp_int *a, mp_int *b, mp_int *m, mp_int *c);
140 mp_err mp_submod(mp_int *a, mp_int *b, mp_int *m, mp_int *c);
141 mp_err mp_mulmod(mp_int *a, mp_int *b, mp_int *m, mp_int *c);
142 #if MP_SQUARE
143 mp_err mp_sqrmod(mp_int *a, mp_int *m, mp_int *c);
144 #else
145 #define mp_sqrmod(a, m, c) mp_mulmod(a, a, m, c)
146 #endif
147 mp_err mp_exptmod(mp_int *a, mp_int *b, mp_int *m, mp_int *c);
148 mp_err mp_exptmod_d(mp_int *a, mp_digit d, mp_int *m, mp_int *c);
149 #endif /* MP_MODARITH */
150
151 /*------------------------------------------------------------------------*/
152 /* Comparisons */
153
154 int mp_cmp_z(mp_int *a);
155 int mp_cmp_d(mp_int *a, mp_digit d);
156 int mp_cmp(mp_int *a, mp_int *b);
157 int mp_cmp_mag(mp_int *a, mp_int *b);
158 int mp_cmp_int(mp_int *a, long z);
159 int mp_isodd(mp_int *a);
160 int mp_iseven(mp_int *a);
161
162 /*------------------------------------------------------------------------*/
163 /* Number theoretic */
164
165 #if MP_NUMTH
166 mp_err mp_gcd(mp_int *a, mp_int *b, mp_int *c);
167 mp_err mp_lcm(mp_int *a, mp_int *b, mp_int *c);
168 mp_err mp_xgcd(mp_int *a, mp_int *b, mp_int *g, mp_int *x, mp_int *y);
169 mp_err mp_invmod(mp_int *a, mp_int *m, mp_int *c);
170 #endif /* end MP_NUMTH */
171
172 /*------------------------------------------------------------------------*/
173 /* Input and output */
174
175 #if MP_IOFUNC
176 void mp_print(mp_int *mp, FILE *ofp);
177 #endif /* end MP_IOFUNC */
178
179 /*------------------------------------------------------------------------*/
180 /* Base conversion */
181
182 #define BITS 1
183 #define BYTES CHAR_BIT
184
185 mp_err mp_read_signed_bin(mp_int *mp, unsigned char *str, int len);
186 int mp_signed_bin_size(mp_int *mp);
187 mp_err mp_to_signed_bin(mp_int *mp, unsigned char *str);
188
189 mp_err mp_read_unsigned_bin(mp_int *mp, unsigned char *str, int len);
190 int mp_unsigned_bin_size(mp_int *mp);
191 mp_err mp_to_unsigned_bin(mp_int *mp, unsigned char *str);
192
193 int mp_count_bits(mp_int *mp);
194
195 #if MP_COMPAT_MACROS
196 #define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
197 #define mp_raw_size(mp) mp_signed_bin_size(mp)
198 #define mp_toraw(mp, str) mp_to_signed_bin((mp), (str))
199 #define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
200 #define mp_mag_size(mp) mp_unsigned_bin_size(mp)
201 #define mp_tomag(mp, str) mp_to_unsigned_bin((mp), (str))
202 #endif
203
204 mp_err mp_read_radix(mp_int *mp, unsigned char *str, int radix);
205 int mp_radix_size(mp_int *mp, int radix);
206 int mp_value_radix_size(int num, int qty, int radix);
207 mp_err mp_toradix(mp_int *mp, unsigned char *str, int radix);
208
209 int mp_char2value(char ch, int r);
210
211 #define mp_tobinary(M, S) mp_toradix((M), (S), 2)
212 #define mp_tooctal(M, S) mp_toradix((M), (S), 8)
213 #define mp_todecimal(M, S) mp_toradix((M), (S), 10)
214 #define mp_tohex(M, S) mp_toradix((M), (S), 16)
215
216 /*------------------------------------------------------------------------*/
217 /* Error strings */
218
219 const char *mp_strerror(mp_err ec);
220
221 #endif /* end _H_MPI_ */

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