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[luatex.git] / source / libs / gmp / gmp-src / rand / randmt.h
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1 /* Mersenne Twister pseudo-random number generator defines.
3 Copyright 2002, 2003 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of either:
10 * the GNU Lesser General Public License as published by the Free
11 Software Foundation; either version 3 of the License, or (at your
12 option) any later version.
16 * the GNU General Public License as published by the Free Software
17 Foundation; either version 2 of the License, or (at your option) any
18 later version.
20 or both in parallel, as here.
22 The GNU MP Library is distributed in the hope that it will be useful, but
23 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
24 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
25 for more details.
27 You should have received copies of the GNU General Public License and the
28 GNU Lesser General Public License along with the GNU MP Library. If not,
29 see https://www.gnu.org/licenses/. */
32 /* Number of extractions used to warm the buffer up. */
33 #define WARM_UP 2000
35 /* Period parameters. */
36 #define N 624
37 #define M 397
38 #define MATRIX_A 0x9908B0DF /* Constant vector a. */
40 /* State structure for MT. */
41 typedef struct
43 gmp_uint_least32_t mt[N]; /* State array. */
44 int mti; /* Index of current value. */
45 } gmp_rand_mt_struct;
48 void __gmp_mt_recalc_buffer (gmp_uint_least32_t *);
49 void __gmp_randget_mt (gmp_randstate_t, mp_ptr, unsigned long int);
50 void __gmp_randclear_mt (gmp_randstate_t);
51 void __gmp_randiset_mt (gmp_randstate_ptr, gmp_randstate_srcptr);