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randmtzig.h
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1 /*
2 
3 Copyright (C) 2006-2013 John W. Eaton
4 
5 This file is part of Octave.
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7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
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21 */
22 
23 /*
24  A C-program for MT19937, with initialization improved 2002/2/10.
25  Coded by Takuji Nishimura and Makoto Matsumoto.
26  This is a faster version by taking Shawn Cokus's optimization,
27  Matthe Bellew's simplification, Isaku Wada's real version.
28  David Bateman added normal and exponential distributions following
29  Marsaglia and Tang's Ziggurat algorithm.
30 
31  Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
32  Copyright (C) 2004, David Bateman
33  All rights reserved.
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36  modification, are permitted provided that the following conditions
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39  1. Redistributions of source code must retain the above copyright
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44  documentation and/or other materials provided with the distribution.
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48  permission.
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50  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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60  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 
62 */
63 
64 #ifndef _RANDMTZIG_H
65 #define _RANDMTZIG_H
66 
67 #define MT_N 624
68 
69 #ifdef __cplusplus
70 extern "C" {
71 #endif
72 
73 /* === Mersenne Twister === */
74 extern OCTAVE_API void oct_init_by_int (uint32_t s);
75 extern OCTAVE_API void oct_init_by_array (uint32_t init_key[], int key_length);
76 extern OCTAVE_API void oct_init_by_entropy (void);
77 extern OCTAVE_API void oct_set_state (uint32_t save[]);
78 extern OCTAVE_API void oct_get_state (uint32_t save[]);
79 
80 /* === Array generators === */
81 extern OCTAVE_API double oct_randu (void);
82 extern OCTAVE_API double oct_randn (void);
83 extern OCTAVE_API double oct_rande (void);
84 
85 extern OCTAVE_API float oct_float_randu (void);
86 extern OCTAVE_API float oct_float_randn (void);
87 extern OCTAVE_API float oct_float_rande (void);
88 
89 /* === Array generators === */
90 extern OCTAVE_API void oct_fill_randu (octave_idx_type n, double *p);
91 extern OCTAVE_API void oct_fill_randn (octave_idx_type n, double *p);
92 extern OCTAVE_API void oct_fill_rande (octave_idx_type n, double *p);
93 
94 extern OCTAVE_API void oct_fill_float_randu (octave_idx_type n, float *p);
95 extern OCTAVE_API void oct_fill_float_randn (octave_idx_type n, float *p);
96 extern OCTAVE_API void oct_fill_float_rande (octave_idx_type n, float *p);
97 
98 #ifdef __cplusplus
99 }
100 #endif
101 #endif