Mercurial > jwe > octave
view liboctave/numeric/randmtzig.h @ 31170:06c76eca5f95 default tip @
maint: merge stable to default
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 29 Jul 2022 12:02:42 -0400 |
parents | 796f54d4ddbf |
children |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2006-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// /* A C-program for MT19937, with initialization improved 2002/2/10. Coded by Takuji Nishimura and Makoto Matsumoto. This is a faster version by taking Shawn Cokus's optimization, Matthe Bellew's simplification, Isaku Wada's real version. David Bateman added normal and exponential distributions following Marsaglia and Tang's Ziggurat algorithm. Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, Copyright (C) 2004, David Bateman All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The names of its contributors may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #if ! defined (octave_randmtzig_h) #define octave_randmtzig_h 1 #include "octave-config.h" #define MT_N 624 namespace octave { // Mersenne Twister. extern OCTAVE_API void init_mersenne_twister (void); extern OCTAVE_API void init_mersenne_twister (const uint32_t seed); extern OCTAVE_API void init_mersenne_twister (const uint32_t *init_key, const int key_length); extern OCTAVE_API void set_mersenne_twister_state (const uint32_t *save); extern OCTAVE_API void get_mersenne_twister_state (uint32_t *save); template <typename T> OCTAVE_API T rand_uniform (void); template <typename T> OCTAVE_API T rand_normal (void); template <typename T> OCTAVE_API T rand_exponential (void); template <typename T> OCTAVE_API void rand_uniform (octave_idx_type n, T *p); template <typename T> OCTAVE_API void rand_normal (octave_idx_type n, T *p); template <typename T> OCTAVE_API void rand_exponential (octave_idx_type n, T *p); template <> OCTAVE_API double rand_uniform<double> (void); template <> OCTAVE_API double rand_normal<double> (void); template <> OCTAVE_API double rand_exponential<double> (void); template <> OCTAVE_API float rand_uniform<float> (void); template <> OCTAVE_API float rand_normal<float> (void); template <> OCTAVE_API float rand_exponential<float> (void); template <> OCTAVE_API void rand_uniform<double> (octave_idx_type n, double *p); template <> OCTAVE_API void rand_normal<double> (octave_idx_type n, double *p); template <> OCTAVE_API void rand_exponential<double> (octave_idx_type n, double *p); template <> OCTAVE_API void rand_uniform<float> (octave_idx_type n, float *p); template <> OCTAVE_API void rand_normal<float> (octave_idx_type n, float *p); template <> OCTAVE_API void rand_exponential<float> (octave_idx_type n, float *p); } #endif