xref: /aosp_15_r20/external/musl/src/prng/rand_r.c (revision c9945492fdd68bbe62686c5b452b4dc1be3f8453) 
1 #include <stdlib.h>
2 
temper(unsigned x)3 static 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 
rand_r(unsigned * seed)12 int rand_r(unsigned *seed)
13 {
14 	return temper(*seed = *seed * 1103515245 + 12345)/2;
15 }
16