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November 4, 2009 08:27
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// original: http://d.hatena.ne.jp/housuu2002/20091104/1257283619 | |
//孵化乱数列の再現 | |
//cf http://sou31.hp.infoseek.co.jp/pokemon/ran/ran_0.htm#6 | |
#include <iostream> | |
#include <iomanip> | |
#include <cstring> | |
unsigned long mersenne(unsigned long FSeed){ //FSeed が初期Seed | |
unsigned long A,B,C,t[630],t2[630],E,S[630],k[3]; //変数定義 | |
//第0テーブルの決定 | |
t[0]=FSeed; | |
for(int i=1;i<624;i++){ t[i] = (((t[i-1]>>30) ^ (t[i-1])) * 0x6c078965 + i) & 0xFFFFFFFF; } | |
memcpy(t2, t, sizeof t); | |
//性格値の決定 | |
for(int j=0;j<624;j++){ | |
//A,B,Cの値決定 | |
if(j<227){A=j;B=j+1;C=j+397;} | |
if(226<j && j<623){A=j;B=j+1;C=j-227;} | |
if(j==623){A=623;B=0;C=396;} | |
//k[0],k[1]の数値計算 | |
k[0] = (t2[A] & 0x80000000) | (t2[B] & 0x7FFFFFFF); | |
k[1] = ((unsigned long)(k[0]/2) ^ t2[C]); | |
//E(第1テーブルSeed)の数値計算 | |
if(k[0] % 2==1){E=(k[1] ^ 0x9908b0df);} | |
if(k[0] % 2==0){E=k[1];} | |
t2[j] = E; | |
//性格値の決定 | |
k[0] = (((unsigned long)(E/0x800)) ^ E); | |
k[1] = (((k[0] * 0x80) & 0x9D2C5680) ^ k[0]); | |
k[2] = (((k[1] * 0x8000) & 0xEFC60000) ^ k[1]); | |
S[A] = (((unsigned long)(k[2]/0x40000)) ^ k[2]); | |
} | |
//結果出力 | |
cout << "初期Seed:0x" << hex << setw(8) << setfill('0') <<t[0] << endl; | |
for(int i=0;i<20;i++){ | |
cout << dec << setw(3) << i << " 0x" << hex << setw(8) << setfill('0') << S[i] << endl; | |
} | |
return S[1];//2番目の孵化乱数を値として返す | |
} |
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