* Added Mersenne Twister MT19937 as a random number generator.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@14865 54d463be-8e91-2dee-dedb-b68131a5f0ec
2011-06-25 22:09:35 +00:00 · 2011-06-25 22:09:35 +00:00 · 161a499c76
commit 161a499c76
parent 762dcdc316
8 changed files with 899 additions and 0 deletions
--- a/3rdparty/mt19937ar/mt19937ar.c
+++ b/3rdparty/mt19937ar/mt19937ar.c
@ -0,0 +1,175 @@
+/* 
+   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.                          
+   Copyright (C) 2005, Mutsuo Saito,
+   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)
+*/
+
+#include <stdio.h>
+#include "mt19937ar.h"
+
+/* 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 */
+
+static unsigned long mt[N]; /* the array for the state vector  */
+static int mti=N+1; /* mti==N+1 means mt[N] is not initialized */
+
+/* initializes mt[N] with a seed */
+void init_genrand(unsigned long s)
+{
+    mt[0]= s & 0xffffffffUL;
+    for (mti=1; mti<N; mti++) {
+        mt[mti] = 
+	    (1812433253UL * (mt[mti-1] ^ (mt[mti-1] >> 30)) + 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             */
+        mt[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 init_by_array(unsigned long init_key[], int key_length)
+{
+    int i, j, k;
+    init_genrand(19650218UL);
+    i=1; j=0;
+    k = (N>key_length ? N : key_length);
+    for (; k; k--) {
+        mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1664525UL))
+          + init_key[j] + j; /* non linear */
+        mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
+        i++; j++;
+        if (i>=N) { mt[0] = mt[N-1]; i=1; }
+        if (j>=key_length) j=0;
+    }
+    for (k=N-1; k; k--) {
+        mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1566083941UL))
+          - i; /* non linear */
+        mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
+        i++;
+        if (i>=N) { mt[0] = mt[N-1]; i=1; }
+    }
+
+    mt[0] = 0x80000000UL; /* MSB is 1; assuring non-zero initial array */ 
+}
+
+/* generates a random number on [0,0xffffffff]-interval */
+unsigned long genrand_int32(void)
+{
+    unsigned long y;
+    static unsigned long mag01[2]={0x0UL, MATRIX_A};
+    /* mag01[x] = x * MATRIX_A  for x=0,1 */
+
+    if (mti >= N) { /* generate N words at one time */
+        int kk;
+
+        if (mti == N+1)   /* if init_genrand() has not been called, */
+            init_genrand(5489UL); /* a default initial seed is used */
+
+        for (kk=0;kk<N-M;kk++) {
+            y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
+            mt[kk] = mt[kk+M] ^ (y >> 1) ^ mag01[y & 0x1UL];
+        }
+        for (;kk<N-1;kk++) {
+            y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
+            mt[kk] = mt[kk+(M-N)] ^ (y >> 1) ^ mag01[y & 0x1UL];
+        }
+        y = (mt[N-1]&UPPER_MASK)|(mt[0]&LOWER_MASK);
+        mt[N-1] = mt[M-1] ^ (y >> 1) ^ mag01[y & 0x1UL];
+
+        mti = 0;
+    }
+  
+    y = mt[mti++];
+
+    /* Tempering */
+    y ^= (y >> 11);
+    y ^= (y << 7) & 0x9d2c5680UL;
+    y ^= (y << 15) & 0xefc60000UL;
+    y ^= (y >> 18);
+
+    return y;
+}
+
+/* generates a random number on [0,0x7fffffff]-interval */
+long genrand_int31(void)
+{
+    return (long)(genrand_int32()>>1);
+}
+
+/* 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); 
+} 
+/* These real versions are due to Isaku Wada, 2002/01/09 added */
--- a/3rdparty/mt19937ar/mt19937ar.h
+++ b/3rdparty/mt19937ar/mt19937ar.h
@ -0,0 +1,72 @@
+/* 
+   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.
+   Copyright (C) 2005, Mutsuo Saito
+   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)
+*/
+
+/* initializes mt[N] with a seed */
+void init_genrand(unsigned long s);
+
+/* 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 init_by_array(unsigned long init_key[], int key_length);
+
+/* generates a random number on [0,0xffffffff]-interval */
+unsigned long genrand_int32(void);
+
+/* generates a random number on [0,0x7fffffff]-interval */
+long genrand_int31(void);
+
+/* These real versions are due to Isaku Wada, 2002/01/09 added */
+/* generates a random number on [0,1]-real-interval */
+double genrand_real1(void);
+
+/* generates a random number on [0,1)-real-interval */
+double genrand_real2(void);
+
+/* generates a random number on (0,1)-real-interval */
+double genrand_real3(void);
+
+/* generates a random number on [0,1) with 53-bit resolution*/
+double genrand_res53(void);
--- a/3rdparty/mt19937ar/mt19937ar.out
+++ b/3rdparty/mt19937ar/mt19937ar.out
@ -0,0 +1,403 @@
+1000 outputs of genrand_int32()
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+1346282236 1297387043  764598052 3741218111  933457002 
+1886424424 3219631016  525405256 3014235619  323149677 
+2038881721 4100129043 2851715101 2984028078 1888574695 
+2014194741 3515193880 4180573530 3461824363 2641995497 
+3179230245 2902294983 2217320456 4040852155 1784656905 
+3311906931   87498458 2752971818 2635474297 2831215366 
+3682231106 2920043893 3772929704 2816374944  309949752 
+2383758854  154870719  385111597 1191604312 1840700563 
+ 872191186 2925548701 1310412747 2102066999 1504727249 
+3574298750 1191230036 3330575266 3180292097 3539347721 
+ 681369118 3305125752 3648233597  950049240 4173257693 
+1760124957  512151405  681175196  580563018 1169662867 
+4015033554 2687781101  699691603 2673494188 1137221356 
+ 123599888  472658308 1053598179 1012713758 3481064843 
+3759461013 3981457956 3830587662 1877191791 3650996736 
+ 988064871 3515461600 4089077232 2225147448 1249609188 
+2643151863 3896204135 2416995901 1397735321 3460025646 
+
+1000 outputs of genrand_real2()
+0.76275443 0.99000644 0.98670464 0.10143112 0.27933125 
+0.69867227 0.94218740 0.03427201 0.78842173 0.28180608 
+0.92179002 0.20785655 0.54534773 0.69644020 0.38107718 
+0.23978165 0.65286910 0.07514568 0.22765211 0.94872929 
+0.74557914 0.62664415 0.54708246 0.90959343 0.42043116 
+0.86334511 0.19189126 0.14718544 0.70259889 0.63426346 
+0.77408121 0.04531601 0.04605807 0.88595519 0.69398270 
+0.05377184 0.61711170 0.05565708 0.10133577 0.41500776 
+0.91810699 0.22320679 0.23353705 0.92871862 0.98897234 
+0.19786706 0.80558809 0.06961067 0.55840445 0.90479405 
+0.63288060 0.95009721 0.54948447 0.20645042 0.45000959 
+0.87050869 0.70806991 0.19406895 0.79286390 0.49332866 
+0.78483914 0.75145146 0.12341941 0.42030252 0.16728160 
+0.59906494 0.37575460 0.97815160 0.39815952 0.43595080 
+0.04952478 0.33917805 0.76509902 0.61034321 0.90654701 
+0.92915732 0.85365931 0.18812377 0.65913428 0.28814566 
+0.59476081 0.27835931 0.60722542 0.68310435 0.69387186 
+0.03699800 0.65897714 0.17527003 0.02889304 0.86777366 
+0.12352068 0.91439461 0.32022990 0.44445731 0.34903686 
+0.74639273 0.65918367 0.92492794 0.31872642 0.77749724 
+0.85413832 0.76385624 0.32744211 0.91326300 0.27458185 
+0.22190155 0.19865383 0.31227402 0.85321225 0.84243342 
+0.78544200 0.71854080 0.92503892 0.82703064 0.88306297 
+0.47284073 0.70059042 0.48003761 0.38671694 0.60465770 
+0.41747204 0.47163243 0.72750808 0.65830223 0.10955369 
+0.64215401 0.23456345 0.95944940 0.72822249 0.40888451 
+0.69980355 0.26677428 0.57333635 0.39791582 0.85377858 
+0.76962816 0.72004885 0.90903087 0.51376506 0.37732665 
+0.12691640 0.71249738 0.81217908 0.37037313 0.32772374 
+0.14238259 0.05614811 0.74363008 0.39773267 0.94859135 
+0.31452454 0.11730313 0.62962618 0.33334237 0.45547255 
+0.10089665 0.56550662 0.60539371 0.16027624 0.13245301 
+0.60959939 0.04671662 0.99356286 0.57660859 0.40269560 
+0.45274629 0.06699735 0.85064246 0.87742744 0.54508392 
+0.87242982 0.29321385 0.67660627 0.68230715 0.79052073 
+0.48592054 0.25186266 0.93769755 0.28565487 0.47219067 
+0.99054882 0.13155240 0.47110470 0.98556600 0.84397623 
+0.12875246 0.90953202 0.49129015 0.23792727 0.79481194 
+0.44337770 0.96564297 0.67749118 0.55684872 0.27286897 
+0.79538393 0.61965356 0.22487929 0.02226018 0.49248200 
+0.42247006 0.91797788 0.99250134 0.23449967 0.52531508 
+0.10246337 0.78685622 0.34310922 0.89892996 0.40454552 
+0.68608407 0.30752487 0.83601319 0.54956031 0.63777550 
+0.82199797 0.24890696 0.48801123 0.48661910 0.51223987 
+0.32969635 0.31075073 0.21393155 0.73453207 0.15565705 
+0.58584522 0.28976728 0.97621478 0.61498701 0.23891470 
+0.28518540 0.46809591 0.18371914 0.37597910 0.13492176 
+0.66849449 0.82811466 0.56240330 0.37548956 0.27562998 
+0.27521910 0.74096121 0.77176757 0.13748143 0.99747138 
+0.92504502 0.09175241 0.21389176 0.21766512 0.31183245 
+0.23271221 0.21207367 0.57903312 0.77523344 0.13242613 
+0.31037988 0.01204835 0.71652949 0.84487594 0.14982178 
+0.57423142 0.45677888 0.48420169 0.53465428 0.52667473 
+0.46880526 0.49849733 0.05670710 0.79022476 0.03872047 
+0.21697212 0.20443086 0.28949326 0.81678186 0.87629474 
+0.92297064 0.27373097 0.84625273 0.51505586 0.00582792 
+0.33295971 0.91848412 0.92537226 0.91760033 0.07541125 
+0.71745848 0.61158698 0.00941650 0.03135554 0.71527471 
+0.24821915 0.63636652 0.86159918 0.26450229 0.60160194 
+0.35557725 0.24477500 0.07186456 0.51757096 0.62120362 
+0.97981062 0.69954667 0.21065616 0.13382753 0.27693186 
+0.59644095 0.71500764 0.04110751 0.95730081 0.91600724 
+0.47704678 0.26183479 0.34706971 0.07545431 0.29398385 
+0.93236070 0.60486023 0.48015011 0.08870451 0.45548581 
+0.91872718 0.38142712 0.10668643 0.01397541 0.04520355 
+0.93822273 0.18011940 0.57577277 0.91427606 0.30911399 
+0.95853475 0.23611214 0.69619891 0.69601980 0.76765372 
+0.58515930 0.49479057 0.11288752 0.97187699 0.32095365 
+0.57563608 0.40760618 0.78703383 0.43261152 0.90877651 
+0.84686346 0.10599030 0.72872803 0.19315490 0.66152912 
+0.10210518 0.06257876 0.47950688 0.47062066 0.72701157 
+0.48915116 0.66110261 0.60170685 0.24516994 0.12726050 
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+0.14480751 0.88458997 0.53498312 0.15963215 0.55378627 
+0.35171349 0.28719791 0.09097957 0.00667896 0.32309622 
+0.87561479 0.42534520 0.91748977 0.73908457 0.41793223 
+0.99279792 0.87908370 0.28458072 0.59132853 0.98672190 
+0.28547393 0.09452165 0.89910674 0.53681109 0.37931425 
+0.62683489 0.56609740 0.24801549 0.52948179 0.98328855 
+0.66403523 0.55523786 0.75886666 0.84784685 0.86829981 
+0.71448906 0.84670080 0.43922919 0.20771016 0.64157936 
+0.25664246 0.73055695 0.86395782 0.65852932 0.99061803 
+0.40280575 0.39146298 0.07291005 0.97200603 0.20555729 
+0.59616495 0.08138254 0.45796388 0.33681125 0.33989127 
+0.18717090 0.53545811 0.60550838 0.86520709 0.34290701 
+0.72743276 0.73023855 0.34195926 0.65019733 0.02765254 
+0.72575740 0.32709576 0.03420866 0.26061893 0.56997511 
+0.28439072 0.84422744 0.77637570 0.55982168 0.06720327 
+0.58449067 0.71657369 0.15819609 0.58042821 0.07947911 
+0.40193792 0.11376012 0.88762938 0.67532159 0.71223735 
+0.27829114 0.04806073 0.21144026 0.58830274 0.04140071 
+0.43215628 0.12952729 0.94668759 0.87391019 0.98382450 
+0.27750768 0.90849647 0.90962737 0.59269720 0.96102026 
+0.49544979 0.32007095 0.62585546 0.03119821 0.85953001 
+0.22017528 0.05834068 0.80731217 0.53799961 0.74166948 
+0.77426600 0.43938444 0.54862081 0.58575513 0.15886492 
+0.73214332 0.11649057 0.77463977 0.85788827 0.17061997 
+0.66838056 0.96076133 0.07949296 0.68521946 0.89986254 
+0.05667410 0.12741385 0.83470977 0.63969104 0.46612929 
+0.10200126 0.01194925 0.10476340 0.90285217 0.31221221 
+0.32980614 0.46041971 0.52024973 0.05425470 0.28330912 
+0.60426543 0.00598243 0.97244013 0.21135841 0.78561597 
+0.78428734 0.63422849 0.32909934 0.44771136 0.27380750 
+0.14966697 0.18156268 0.65686758 0.28726350 0.97074787 
+0.63676171 0.96649494 0.24526295 0.08297372 0.54257548 
+0.03166785 0.33735355 0.15946671 0.02102971 0.46228045 
+0.11892296 0.33408336 0.29875681 0.29847692 0.73767569 
+0.02080745 0.62980060 0.08082293 0.22993106 0.25031439 
+0.87787525 0.45150053 0.13673441 0.63407612 0.97907688 
+0.52241942 0.50580158 0.06273902 0.05270283 0.77031811 
+0.05113352 0.24393329 0.75036441 0.37436336 0.22877652 
+0.59975358 0.85707591 0.88691457 0.85547165 0.36641027 
+0.58720133 0.45462835 0.09243817 0.32981586 0.07820411 
+0.25421519 0.36004706 0.60092307 0.46192412 0.36758683 
+0.98424170 0.08019934 0.68594024 0.45826386 0.29962317 
+0.79365413 0.89231296 0.49478547 0.87645944 0.23590734 
+0.28106737 0.75026285 0.08136314 0.79582424 0.76010628 
+0.82792971 0.27947652 0.72482861 0.82191216 0.46171689 
+0.79189752 0.96043686 0.51609668 0.88995725 0.28998963 
+0.55191845 0.03934737 0.83033700 0.49553013 0.98009549 
+0.19017594 0.98347750 0.33452066 0.87144372 0.72106301 
+0.71272114 0.71465963 0.88361677 0.85571283 0.73782329 
+0.20920458 0.34855153 0.46766817 0.02780062 0.74898344 
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+0.87319953 0.63265037 0.25552148 0.27422476 0.95217406 
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+0.52690101 0.87473387 0.73918362 0.39826974 0.43683919 
+0.80459118 0.32422684 0.01958019 0.95319576 0.98326137 
+0.83931735 0.69060863 0.33671416 0.68062550 0.65152380 
+0.33392969 0.03451730 0.95227244 0.68200635 0.85074171 
+0.64721009 0.51234433 0.73402047 0.00969637 0.93835057 
+0.80803854 0.31485260 0.20089527 0.01323282 0.59933780 
+0.31584602 0.20209563 0.33754800 0.68604181 0.24443049 
+0.19952227 0.78162632 0.10336988 0.11360736 0.23536740 
+0.23262256 0.67803776 0.48749791 0.74658435 0.92156640 
+0.56706407 0.36683221 0.99157136 0.23421374 0.45183767 
+0.91609720 0.85573315 0.37706276 0.77042618 0.30891908 
+0.40709595 0.06944866 0.61342849 0.88817388 0.58734506 
+0.98711323 0.14744128 0.63242656 0.87704136 0.68347125 
+0.84446569 0.43265239 0.25146321 0.04130111 0.34259839 
+0.92697368 0.40878778 0.56990338 0.76204273 0.19820348 
+0.66314909 0.02482844 0.06669207 0.50205581 0.26084093 
+0.65139159 0.41650223 0.09733904 0.56344203 0.62651696 
+0.67332139 0.58037374 0.47258086 0.21010758 0.05713135 
+0.89390629 0.10781246 0.32037450 0.07628388 0.34227964 
+0.42190597 0.58201860 0.77363549 0.49595133 0.86031236 
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+0.92768077 0.01037616 0.56201727 0.88107122 0.35925856 
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+0.10893790 0.84450224 0.23122236 0.99485593 0.73637397 
+0.17276368 0.13357764 0.74965804 0.64991737 0.61990341 
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+0.89733974 0.37508865 0.42077265 0.68597384 0.72781399 
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+0.81925115 0.45653873 0.37236821 0.31118709 0.52734307 
+0.39672836 0.38185294 0.30163915 0.17374510 0.04913278 
+0.90404879 0.25742801 0.58266467 0.97663209 0.79823377 
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+0.47659049 0.24289680 0.88477595 0.07807463 0.56245739 
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+0.28988183 0.44046090 0.24967434 0.80048356 0.26029740 
+0.30416821 0.64151867 0.52067892 0.12880774 0.85465381 
+0.02690525 0.19149288 0.49630295 0.79682619 0.43566145 
+0.00288078 0.81484193 0.03763639 0.68529083 0.01339574 
+0.38405386 0.30537067 0.22994703 0.44000045 0.27217985 
+0.53831243 0.02870435 0.86282045 0.61831306 0.09164956 
+0.25609707 0.07445781 0.72185784 0.90058883 0.30070608 
+0.94476583 0.56822213 0.21933909 0.96772793 0.80063440 
+0.26307906 0.31183306 0.16501252 0.55436179 0.68562285 
+0.23829083 0.86511559 0.57868991 0.81888344 0.20126869 
+0.93172350 0.66028129 0.21786948 0.78515828 0.10262106 
+0.35390326 0.79303876 0.63427924 0.90479631 0.31024934 
+0.60635447 0.56198079 0.63573813 0.91854197 0.99701497 
+0.83085849 0.31692291 0.01925964 0.97446405 0.98751283 
+0.60944293 0.13751018 0.69519957 0.68956636 0.56969015 
+0.46440193 0.88341765 0.36754434 0.89223647 0.39786427 
+0.85055280 0.12749961 0.79452122 0.89449784 0.14567830 
+0.45716830 0.74822309 0.28200437 0.42546044 0.17464886 
+0.68308746 0.65496587 0.52935411 0.12736159 0.61523955 
+0.81590528 0.63107864 0.39786553 0.20102294 0.53292914 
+0.75485590 0.59847044 0.32861691 0.12125866 0.58917183 
+0.07638293 0.86845380 0.29192617 0.03989733 0.52180460 
+0.32503407 0.64071852 0.69516575 0.74254998 0.54587026 
+0.48713246 0.32920155 0.08719954 0.63497059 0.54328459 
+0.64178757 0.45583809 0.70694291 0.85212760 0.86074305 
+0.33163422 0.85739792 0.59908488 0.74566046 0.72157152 
--- a/3rdparty/mt19937ar/mtTest.c
+++ b/3rdparty/mt19937ar/mtTest.c
@ -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.
+   Copyright (C) 2005, Mutsuo Saito,
+   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)
+*/
+
+#include <stdio.h>
+#include "mt19937ar.h"
+
+int main(void)
+{
+    int i;
+    unsigned long init[4]={0x123, 0x234, 0x345, 0x456}, length=4;
+    init_by_array(init, length);
+    printf("1000 outputs of genrand_int32()\n");
+    for (i=0; i<1000; i++) {
+      printf("%10lu ", genrand_int32());
+      if (i%5==4) printf("\n");
+    }
+    printf("\n1000 outputs of genrand_real2()\n");
+    for (i=0; i<1000; i++) {
+      printf("%10.8f ", genrand_real2());
+      if (i%5==4) printf("\n");
+    }
+    return 0;
+}
--- a/3rdparty/mt19937ar/readme-mt.txt
+++ b/3rdparty/mt19937ar/readme-mt.txt
@ -0,0 +1,79 @@
+This is a Mersenne Twister pseudorandom number generator
+with period 2^19937-1 with improved initialization scheme,
+modified on 2002/1/26 by Takuji Nishimura and Makoto Matsumoto. 
+modified on 2005/4/26 by Mutsuo Saito
+
+Contents of this tar ball:
+readme-mt.txt	 this file
+mt19937ar.c	 the C source (ar: initialize by ARray)
+mt19937ar.h      the C header file for mt19937ar
+mtTest.c         the C test main program of mt19937ar.c
+mt19937ar.out	 Test outputs of six types generators. 1000 for each
+
+1. Initialization
+  The initialization scheme for the previous versions of MT
+(e.g. 1999/10/28 version or earlier) has a tiny problem, that
+the most significant bits of the seed is not well reflected 
+to the state vector of MT.
+
+This version (2002/1/26) has two initialization schemes:
+init_genrand(seed) and init_by_array(init_key, key_length).
+
+init_genrand(seed) initializes the state vector by using
+one unsigned 32-bit integer "seed", which may be zero.
+
+init_by_array(init_key, key_length) initializes the state vector 
+by using an array init_key[] of unsigned 32-bit integers
+of length key_kength. If key_length is smaller than 624,
+then each array of 32-bit integers gives distinct initial
+state vector. This is useful if you want a larger seed space
+than 32-bit word.
+
+2. Generation
+After initialization, the following type of pseudorandom numbers
+are available. 
+
+genrand_int32() generates unsigned 32-bit integers.
+genrand_int31() generates unsigned 31-bit integers.
+genrand_real1() generates uniform real in [0,1] (32-bit resolution). 
+genrand_real2() generates uniform real in [0,1) (32-bit resolution). 
+genrand_real3() generates uniform real in (0,1) (32-bit resolution).
+genrand_res53() generates uniform real in [0,1) with 53-bit resolution.
+
+Note: the last five functions call the first one. 
+if you need more speed for these five functions, you may
+suppress the function call by copying genrand_int32() and
+replacing the last return(), following to these five functions.
+
+3. main()
+main() is an example to initialize with an array of length 4,
+then 1000 outputs of unsigned 32-bit integers, 
+then 1000 outputs of real [0,1) numbers. 
+
+4. The outputs
+The output of the mt19937ar.c is in the file mt19937ar.out.
+If you revise or translate the code, check the output
+by using this file. 
+
+5. Cryptography
+This generator is not cryptoraphically secure. 
+You need to use a one-way (or hash) function to obtain 
+a secure random sequence.
+
+6. Correspondence
+See:
+URL http://www.math.keio.ac.jp/matumoto/emt.html
+email matumoto@math.keio.ac.jp, nisimura@sci.kj.yamagata-u.ac.jp
+
+7. Reference
+M. Matsumoto and T. Nishimura,
+"Mersenne Twister: A 623-Dimensionally Equidistributed Uniform  
+Pseudo-Random Number Generator",
+ACM Transactions on Modeling and Computer Simulation,
+Vol. 8, No. 1, January 1998, pp 3--30.
+
+-------
+Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
+All rights reserved.
+Copyright (C) 2005, Mutsuo Saito
+All rights reserved.
--- a/Changelog-Trunk.txt
+++ b/Changelog-Trunk.txt
@ -1,5 +1,7 @@
 Date	Added

+2011/06/25
+	* Added Mersenne Twister MT19937 as a random number generator. [FlavioJS]
 2011/06/23
 	* Made chrif_save always call pc_makesavestatus. (no reason to prevent the call, and was interfering with multi map-server; fixes bugreport:1400) [FlavioJS]
 2011/06/22
--- a/src/common/random.c
+++ b/src/common/random.c
@ -0,0 +1,83 @@
+// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
+// For more information, see LICENCE in the main folder
+
+#include "../common/timer.h" // gettick
+#include "random.h"
+#if defined(WIN32)
+	#define WIN32_LEAN_AND_MEAN
+	#include <windows.h>
+#elif defined(HAVE_GETPID) || defined(HAVE_GETTID)
+	#include <sys/types.h>
+	#include <unistd.h>
+#endif
+#include <time.h> // time
+#include <mt19937ar.h> // init_genrand, genrand_int32, genrand_res53
+
+
+/// Initializes the random number generator with an appropriate seed.
+void rnd_init(void)
+{
+	uint32 seed = gettick();
+	seed += (uint32)time(NULL);
+#if defined(WIN32)
+	seed += GetCurrentProcessId();
+	seed += GetCurrentThreadId();
+#else
+#if defined(HAVE_GETPID)
+	seed += (uint32)getpid();
+#endif // HAVE_GETPID
+#if defined(HAVE_GETTID)
+	seed += (uint32)gettid();
+#endif // HAVE_GETTID
+#endif
+	init_genrand(seed);
+}
+
+
+/// Initializes the random number generator.
+void rnd_seed(uint32 seed)
+{
+	init_genrand(seed);
+}
+
+
+/// Generates a random number in the interval [0, UINT32_MAX]
+uint32 rnd(void)
+{
+	return (uint32)genrand_int32();
+}
+
+
+/// Generates a random number in the interval [0, dice_faces)
+/// NOTE: interval is open ended, so dice_faces is excluded (unless it's 0)
+uint32 rnd_roll(uint32 dice_faces)
+{
+	return (uint32)(rnd_uniform()*dice_faces);
+}
+
+
+/// Generates a random number in the interval [min, max]
+/// Returns min if range is invalid.
+int32 rnd_value(int32 min, int32 max)
+{
+	if( min >= max )
+		return min;
+	return min + (int32)(rnd_uniform()*(max-min+1));
+}
+
+
+/// Generates a random number in the interval [0.0, 1.0)
+/// NOTE: interval is open ended, so 1.0 is excluded
+double rnd_uniform(void)
+{
+	return ((uint32)genrand_int32())*(1.0/4294967296.0);// divided by 2^32
+}
+
+
+/// Generates a random number in the interval [0.0, 1.0) with 53-bit resolution
+/// NOTE: interval is open ended, so 1.0 is excluded
+/// NOTE: 53 bits is the maximum precision of a double
+double rnd_uniform53(void)
+{
+	return genrand_res53();
+}
--- a/src/common/random.h
+++ b/src/common/random.h
@ -0,0 +1,20 @@
+// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
+// For more information, see LICENCE in the main folder
+
+#ifndef _RANDOM_H_
+#define _RANDOM_H_
+
+#ifndef _CBASETYPES_H_
+#include "../common/cbasetypes.h"
+#endif
+
+void rnd_init(void);
+void rnd_seed(uint32);
+
+uint32 rnd(void);// [0, UINT32_MAX]
+uint32 rnd_roll(uint32 dice_faces);// [0, dice_faces)
+int32 rnd_value(int32 min, int32 max);// [min, max]
+double rnd_uniform(void);// [0.0, 1.0)
+double rnd_uniform53(void);// [0.0, 1.0)
+
+#endif /* _RANDOM_H_ */