RNG

main.c

#include<stdio.h>

int main(void) {
    unsigned long long RNG1 = 0x12345;
    unsigned long long RNG2 = 0x12345;
    unsigned int highorder;
    unsigned int loworder;
    
    for (int i = 0x0; i < 0x10; i++) {
        highorder = (RNG1 * 0x6C078965) >> 32;
        loworder = (RNG1 * 0x6C078965 << 32) / 0xFFFFFFFF;
        highorder = 0x6C078965 * RNG2 + highorder;
        RNG2 = (0x5D588B65 * RNG1 + highorder) & 0xFFFFFFFF;
        RNG1 = (loworder + 0x269EC3) & 0xFFFFFFFF;
        printf("%08llX %08llX\n", RNG1, RNG2);
    }
    return 0;
}

main.py

class NSRandom:
    def __init__(self, mRandom1, mRandom2):
        self._mRandom1 = mRandom1
        self._mRandom2 = mRandom2
    
    def getU32(self) -> (int, int):
        # 計算用の64ビット整数
        mSeed = (self._mRandom1 * 0x6C078965) & 0xFFFFFFFFFFFFFFFF
        # 上位32ビット, 下位32ビット
        mSeed1, mSeed2 = mSeed >> 0x20, mSeed & 0xFFFFFFFF
        # 上位32ビットを再計算
        mSeed1 = (0x6C078965 * self._mRandom2 + mSeed1) & 0xFFFFFFFF
        # 新しい乱数としてセットする
        self._mRandom2 = (0x5D588B65 * self._mRandom1 + mSeed1) & 0xFFFFFFFF
        self._mRandom1 = (mSeed2 + 0x00269EC3) & 0xFFFFFFFF

        return self._mRandom1, self._mRandom2
      
if __name__=='__main__':
    rnd = NSRandom(0x12345, 0x12345)
    for count in range(0, 10):
        rnd1, rnd2 = rnd.getU32()
        print('%08X' % rnd1, '%08X' % rnd2)