--- /dev/null
+//
+// chnlib05.c
+// AI003
+//
+// Created by 西田 耀 on 13/06/30.
+// Copyright (c) 2013年 Hikaru Nishida. All rights reserved.
+// A C-program for MT19937, modified by hikarupsp for CHNLIB.
+
+// MT19937を利用した乱数生成器
+
+/*
+ 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)
+*/
+/*
+ Modified by hikarupsp on 2013/06/30 for CHNLIB.
+*/
+
+//
+//Include headers
+//
+#include <stdio.h>
+#include "chnlib.h"
+
+//
+//Define values
+//
+/* Period parameters */
+#define N 624
+#define M 397
+#define MATRIX_A 0x9908b0dfUL /* constant vector a */
+#define UPPER_MASK 0x80000000UL /* most significant w-r bits */
+#define LOWER_MASK 0x7fffffffUL /* least significant r bits */
+
+//
+//Declare internal functions
+//
+CHNLIB_RandomGeneratorMT *CHNLIB_RandomGeneratorMT_Internal_Allocate(void);
+void CHNLIB_RandomGeneratorMT_Internal_Destruct(void **structure);
+uint CHNLIB_RandomGeneratorMT_Internal_GetHash(const void *structure);
+
+//
+//Define types
+//
+struct CHNLIB_RANDOM_GENERATOR_MT {
+ //MT19937を利用した乱数生成器
+ CHNLIB_StructureHeader header;
+ unsigned long mt[N]; /* the array for the state vector */
+ int mti; /* mti==N+1 means mt[N] is not initialized */
+};
+
+//
+//Functions
+//
+
+CHNLIB_RandomGeneratorMT *CHNLIB_RandomGeneratorMT_Initialise(void)
+{
+ CHNLIB_RandomGeneratorMT *env;
+
+ env = CHNLIB_RandomGeneratorMT_Internal_Allocate();
+ env->header.destructor = &CHNLIB_RandomGeneratorMT_Internal_Destruct;
+ env->header.getHash = &CHNLIB_RandomGeneratorMT_Internal_GetHash;
+ env->mti = N + 1; /* mti==N+1 means mt[N] is not initialized */
+ return env;
+}
+
+void CHNLIB_RandomGeneratorMT_Free(CHNLIB_RandomGeneratorMT *env)
+{
+ //envを解放する。
+ if(CHNLIB_StructureHeader_GetTypeID(env) != CHNLIB_STRUCT_ID_RandomGeneratorMT){
+ return;
+ }
+
+ env->header.typeid = CHNLIB_STRUCT_ID_Null;
+ env->header.signature = 0;
+ CHNLIB_System_FreeMemory(env, CHNLIB_DEBUG_ARGUMENTS);
+
+ return;
+}
+
+
+/* initializes mt[N] with a seed */
+void CHNLIB_RandomGeneratorMT_SetSeed(CHNLIB_RandomGeneratorMT *env, unsigned long s)
+{
+ if(CHNLIB_StructureHeader_GetTypeID(env) != CHNLIB_STRUCT_ID_RandomGeneratorMT){
+ return;
+ }
+
+ env->mt[0]= s & 0xffffffffUL;
+ for (env->mti=1; env->mti<N; env->mti++) {
+ env->mt[env->mti] =
+ (1812433253UL * (env->mt[env->mti-1] ^ (env->mt[env->mti-1] >> 30)) + env->mti);
+ /* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
+ /* In the previous versions, MSBs of the seed affect */
+ /* only MSBs of the array mt[]. */
+ /* 2002/01/09 modified by Makoto Matsumoto */
+ env->mt[env->mti] &= 0xffffffffUL;
+ /* for >32 bit machines */
+ }
+}
+
+/* initialize by an array with array-length */
+/* init_key is the array for initializing keys */
+/* key_length is its length */
+/* slight change for C++, 2004/2/26 */
+void CHNLIB_RandomGeneratorMT_SetSeedFromArray(CHNLIB_RandomGeneratorMT *env, unsigned long init_key[], int key_length)
+{
+ int i, j, k;
+
+ if(CHNLIB_StructureHeader_GetTypeID(env) != CHNLIB_STRUCT_ID_RandomGeneratorMT){
+ return;
+ }
+
+ CHNLIB_RandomGeneratorMT_SetSeed(env, 19650218UL);
+ i=1; j=0;
+ k = (N>key_length ? N : key_length);
+ for (; k; k--) {
+ env->mt[i] = (env->mt[i] ^ ((env->mt[i-1] ^ (env->mt[i-1] >> 30)) * 1664525UL))
+ + init_key[j] + j; /* non linear */
+ env->mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
+ i++; j++;
+ if (i>=N) { env->mt[0] = env->mt[N-1]; i=1; }
+ if (j>=key_length) j=0;
+ }
+ for (k=N-1; k; k--) {
+ env->mt[i] = (env->mt[i] ^ ((env->mt[i-1] ^ (env->mt[i-1] >> 30)) * 1566083941UL))
+ - i; /* non linear */
+ env->mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
+ i++;
+ if (i>=N) { env->mt[0] = env->mt[N-1]; i=1; }
+ }
+
+ env->mt[0] = 0x80000000UL; /* MSB is 1; assuring non-zero initial array */
+}
+
+/* generates a random number on [0,0xffffffff]-interval */
+uint CHNLIB_RandomGeneratorMT_GetRandomUnsignedInteger32(CHNLIB_RandomGeneratorMT *env)
+{
+ unsigned long y;
+ static unsigned long mag01[2]={0x0UL, MATRIX_A};
+ /* mag01[x] = x * MATRIX_A for x=0,1 */
+
+ if(CHNLIB_StructureHeader_GetTypeID(env) != CHNLIB_STRUCT_ID_RandomGeneratorMT){
+ return 0;
+ }
+
+ if (env->mti >= N) { /* generate N words at one time */
+ int kk;
+
+ if (env->mti == N+1) /* if init_genrand() has not been called, */
+ CHNLIB_RandomGeneratorMT_SetSeed(env, 5489UL); /* a default initial seed is used */
+
+ for (kk=0;kk<N-M;kk++) {
+ y = (env->mt[kk]&UPPER_MASK)|(env->mt[kk+1]&LOWER_MASK);
+ env->mt[kk] = env->mt[kk+M] ^ (y >> 1) ^ mag01[y & 0x1UL];
+ }
+ for (;kk<N-1;kk++) {
+ y = (env->mt[kk]&UPPER_MASK)|(env->mt[kk+1]&LOWER_MASK);
+ env->mt[kk] = env->mt[kk+(M-N)] ^ (y >> 1) ^ mag01[y & 0x1UL];
+ }
+ y = (env->mt[N-1]&UPPER_MASK)|(env->mt[0]&LOWER_MASK);
+ env->mt[N-1] = env->mt[M-1] ^ (y >> 1) ^ mag01[y & 0x1UL];
+
+ env->mti = 0;
+ }
+
+ y = env->mt[env->mti++];
+
+ /* Tempering */
+ y ^= (y >> 11);
+ y ^= (y << 7) & 0x9d2c5680UL;
+ y ^= (y << 15) & 0xefc60000UL;
+ y ^= (y >> 18);
+
+ return (uint)y;
+}
+
+/* generates a random number on [0,1]-real-interval */
+//double genrand_real1(void)
+//{
+// return genrand_int32()*(1.0/4294967295.0);
+// /* divided by 2^32-1 */
+//}
+
+/* generates a random number on [0,1)-real-interval */
+//double genrand_real2(void)
+//{
+// return genrand_int32()*(1.0/4294967296.0);
+// /* divided by 2^32 */
+//}
+
+/* generates a random number on (0,1)-real-interval */
+//double genrand_real3(void)
+//{
+// return (((double)genrand_int32()) + 0.5)*(1.0/4294967296.0);
+// /* divided by 2^32 */
+//}
+
+/* generates a random number on [0,1) with 53-bit resolution*/
+//double genrand_res53(void)
+//{
+// unsigned long a=genrand_int32()>>5, b=genrand_int32()>>6;
+// return(a*67108864.0+b)*(1.0/9007199254740992.0);
+//}
+
+//
+//Internal functions
+//
+
+CHNLIB_RandomGeneratorMT *CHNLIB_RandomGeneratorMT_Internal_Allocate(void)
+{
+ CHNLIB_RandomGeneratorMT *tag;
+
+ tag = (CHNLIB_RandomGeneratorMT *)CHNLIB_System_AllocateMemory_Strict(sizeof(CHNLIB_RandomGeneratorMT), CHNLIB_DEBUG_ARGUMENTS);
+
+ CHNLIB_StructureHeader_Initialize(&tag->header, CHNLIB_STRUCT_ID_RandomGeneratorMT);
+
+ return tag;
+}
+
+void CHNLIB_RandomGeneratorMT_Internal_Destruct(void **structure)
+{
+ //デストラクタ（実際にRelease->freeされる時に呼ばれる）
+ if(structure == NULL){
+ return;
+ }
+
+#ifdef DEBUG_MEMORY_REFERENCE_COUNT
+ CHNLIB_Debug("Release(with free)[%p].", CHNLIB_DEBUG_ARGUMENTS, *structure);
+#endif
+
+ CHNLIB_RandomGeneratorMT_Free(*structure);
+
+ *structure = NULL;
+
+ return;
+}
+
+uint CHNLIB_RandomGeneratorMT_Internal_GetHash(const void *structure)
+{
+ //構造体の値が静的な意味を持たない場合は、構造体のアドレスの下位32bit分を返し、Hashの代わりとする。
+ uint hash;
+
+ hash = 0;
+
+ if(CHNLIB_StructureHeader_GetTypeID(structure) == CHNLIB_STRUCT_ID_RandomGeneratorMT){
+ hash = (uint)&structure;
+ }
+
+ return hash;
+}
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