contrib/gmp/randmt.h

   1 /* Mersenne Twister pseudo-random number generator defines.
   2
   3 Copyright 2002, 2003 Free Software Foundation, Inc.
   4
   5 This file is part of the GNU MP Library.
   6
   7 The GNU MP Library is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU Lesser General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or (at your
  10 option) any later version.
  11
  12 The GNU MP Library is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15 License for more details.
  16
  17 You should have received a copy of the GNU Lesser General Public License
  18 along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
  19
  20
  21 /* Number of extractions used to warm the buffer up.  */
  22 #define WARM_UP 2000
  23
  24 /* Period parameters.  */
  25 #define N 624
  26 #define M 397
  27 #define MATRIX_A 0x9908B0DF   /* Constant vector a.  */
  28
  29 /* State structure for MT.  */
  30 typedef struct
  31 {
  32   gmp_uint_least32_t mt[N];    /* State array.  */
  33   int mti;                     /* Index of current value.  */
  34 } gmp_rand_mt_struct;
  35
  36
  37 void __gmp_mt_recalc_buffer __GMP_PROTO ((gmp_uint_least32_t *));
  38 void __gmp_randget_mt __GMP_PROTO ((gmp_randstate_t, mp_ptr, unsigned long int));
  39 void __gmp_randclear_mt __GMP_PROTO ((gmp_randstate_t rstate));
  40 void __gmp_randiset_mt __GMP_PROTO ((gmp_randstate_ptr, gmp_randstate_srcptr));