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116 lines
3.5 KiB
116 lines
3.5 KiB
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/*
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* mt19937.h
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*
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* Mersenne Twister.
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*
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A C-program for MT19937, with initialization improved 2002/1/26.
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Coded by Takuji Nishimura and Makoto Matsumoto.
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Before using, initialize the state by using init_genrand(seed)
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or init_by_array(init_key, key_length).
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Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The names of its contributors may not be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Any feedback is very welcome.
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http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html
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email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space)
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*/
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#ifndef MT19937_H
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#define MT19937_H 1
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#if defined(__APPLE__)
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#include <OpenCL/cl_platform.h>
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#else
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#include <CL/cl_platform.h>
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#endif
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/*
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* Interfaces here have been modified from original sources so that they
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* are safe to call reentrantly, so long as a different MTdata is used
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* on each thread.
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*/
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typedef struct _MTdata *MTdata;
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/* Create the random number generator with seed */
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MTdata init_genrand(cl_uint /*seed*/);
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/* release memory used by a MTdata private data */
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void free_mtdata(MTdata /*data*/);
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/* generates a random number on [0,0xffffffff]-interval */
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cl_uint genrand_int32(MTdata /*data*/);
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/* generates a random number on [0,0xffffffffffffffffULL]-interval */
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cl_ulong genrand_int64(MTdata /*data*/);
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/* generates a random number on [0,1]-real-interval */
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double genrand_real1(MTdata /*data*/);
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/* generates a random number on [0,1)-real-interval */
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double genrand_real2(MTdata /*data*/);
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/* generates a random number on (0,1)-real-interval */
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double genrand_real3(MTdata /*data*/);
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/* generates a random number on [0,1) with 53-bit resolution*/
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double genrand_res53(MTdata /*data*/);
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#ifdef __cplusplus
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#include <cassert>
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struct MTdataHolder
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{
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MTdataHolder(cl_uint seed)
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{
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m_mtdata = init_genrand(seed);
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assert(m_mtdata != nullptr);
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}
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MTdataHolder(MTdata mtdata): m_mtdata(mtdata) {}
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~MTdataHolder() { free_mtdata(m_mtdata); }
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operator MTdata() const { return m_mtdata; }
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private:
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MTdata m_mtdata;
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};
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#endif // #ifdef __cplusplus
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#endif /* MT19937_H */
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