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1 /* |
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2 |
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3 Copyright (C) 2006, 2007 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 /* |
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24 A C-program for MT19937, with initialization improved 2002/2/10. |
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25 Coded by Takuji Nishimura and Makoto Matsumoto. |
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26 This is a faster version by taking Shawn Cokus's optimization, |
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27 Matthe Bellew's simplification, Isaku Wada's real version. |
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28 David Bateman added normal and exponential distributions following |
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29 Marsaglia and Tang's Ziggurat algorithm. |
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30 |
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31 Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, |
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32 Copyright (C) 2004, David Bateman |
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33 All rights reserved. |
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34 |
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35 Redistribution and use in source and binary forms, with or without |
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36 modification, are permitted provided that the following conditions |
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37 are met: |
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38 |
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39 1. Redistributions of source code must retain the above copyright |
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40 notice, this list of conditions and the following disclaimer. |
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41 |
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42 2. Redistributions in binary form must reproduce the above copyright |
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43 notice, this list of conditions and the following disclaimer in the |
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44 documentation and/or other materials provided with the distribution. |
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45 |
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46 3. The names of its contributors may not be used to endorse or promote |
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47 products derived from this software without specific prior written |
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48 permission. |
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49 |
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50 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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51 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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52 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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53 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
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54 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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55 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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56 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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57 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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58 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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59 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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60 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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61 |
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62 */ |
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63 |
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64 #ifndef _RANDMTZIG_H |
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65 #define _RANDMTZIG_H |
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66 |
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67 #define MT_N 624 |
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68 |
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69 #ifdef __cplusplus |
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70 extern "C" { |
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71 #endif |
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72 |
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73 /* === Mersenne Twister === */ |
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74 extern void oct_init_by_int (uint32_t s); |
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75 extern void oct_init_by_array (uint32_t init_key[], int key_length); |
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76 extern void oct_init_by_entropy (void); |
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77 extern void oct_set_state (uint32_t save[]); |
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78 extern void oct_get_state (uint32_t save[]); |
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79 |
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80 /* === Array generators === */ |
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81 extern double oct_randu (void); |
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82 extern double oct_randn (void); |
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83 extern double oct_rande (void); |
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84 |
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85 /* === Array generators === */ |
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86 extern void oct_fill_randu (octave_idx_type n, double *p); |
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87 extern void oct_fill_randn (octave_idx_type n, double *p); |
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88 extern void oct_fill_rande (octave_idx_type n, double *p); |
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89 |
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90 #ifdef __cplusplus |
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91 } |
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92 #endif |
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93 #endif |
