Index: third_party/mt19937ar/mt19937ar.h |
=================================================================== |
--- third_party/mt19937ar/mt19937ar.h (revision 0) |
+++ third_party/mt19937ar/mt19937ar.h (revision 0) |
@@ -0,0 +1,65 @@ |
+/* |
+ A C-program for MT19937, with initialization improved 2002/1/26. |
+ Coded by Takuji Nishimura and Makoto Matsumoto. |
+ |
+ Before using, initialize the state by using init_genrand(seed) |
+ or init_by_array(init_key, key_length). |
+ |
+ Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, |
+ 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. |
+ |
+ |
+ Any feedback is very welcome. |
+ http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html |
+ email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space) |
+ */ |
+ |
+#ifndef THIRD_PARTY_MT19937AR_MT19937AR_H_ |
+#define THIRD_PARTY_MT19937AR_MT19937AR_H_ |
+ |
+#include <vector> |
+ |
+#include "base/basictypes.h" |
+ |
+class MersenneTwister { |
+ public: |
+ MersenneTwister(); |
+ ~MersenneTwister(); |
+ |
+ void init_genrand(uint32 s); |
+ void init_by_array(uint32 init_key[], int key_length); |
+ uint32 genrand_int32(void); |
+ |
+ private: |
+ std::vector<uint32> mt; /* the array for the state vector */ |
+ int mti; /* mti==N+1 means mt[N] is not initialized */ |
+}; |
+ |
+#endif // THIRD_PARTY_MT19937AR_MT19937AR_H_ |