#define LENG 17 static long ary[LENG] = { 0x4B14EA50L, 0x53C4A8E0L, 0x67B1FA98L, 0x9CFB3BB5L, 0x18761AF1L, 0x7970CD66L, 0xDBAFE136L, 0x3C31FC3EL, 0x697B37DEL, 0x07BC568BL, 0xCAFD3967L, 0xA8F48722L, 0x4AB26824L, 0xA479EE47L, 0x5C7246E2L, 0x954BF297L, 0x20A713ADL, }; static int i1 = 0; static int i2 = 12; srand(seed) { register i, j; for(i = 0; i < LENG; i++) { ary[i] = 0x55555555L; if(seed & 1) ary[i] = 0xCCCCCCCCL; if(seed & 0x8000) ary[i] ^= 0xF0F0F0F0L; seed >>= 1; } i1 = 0; i2 = 12; for(i = 1; i < 32; i += i) do { j = rand(); ary[i1] += ary[i1] >> i; ary[i2] += ary[i2] << i; } while (i1); } rand() { if(++i1 >= LENG) i1 = 0; if(++i2 >= LENG) i2 = 0; ary[i1] += ary[i2]; return((ary[i1] >> 15) & 0x7FFF); } long lrand() { if(++i1 >= LENG) i1 = 0; if(++i2 >= LENG) i2 = 0; ary[i1] += ary[i2]; return(ary[i1] & 0x7FFFFFFFL); } double frand() { if(++i1 >= LENG) i1 = 0; if(++i2 >= LENG) i2 = 0; ary[i1] += ary[i2]; return((ary[i1] & 0x7FFFFFFFL) / 2.147483648e9); } nrand(n) { if(++i1 >= LENG) i1 = 0; if(++i2 >= LENG) i2 = 0; ary[i1] += ary[i2]; return((ary[i1] & 0x7FFFFFFFL) % n); }