1#include <stdlib.h>
 2
 3static unsigned temper(unsigned x)
 4{
 5	x ^= x>>11;
 6	x ^= x<<7 & 0x9D2C5680;
 7	x ^= x<<15 & 0xEFC60000;
 8	x ^= x>>18;
 9	return x;
10}
11
12int rand_r(unsigned *seed)
13{
14	return temper(*seed = *seed * 1103515245 + 12345)/2;
15}