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