rework langinfo code for ABI compat and for use by time code
[musl] / src / prng / rand_r.c
1 #include <stdlib.h>
2
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
12 int rand_r(unsigned *seed)
13 {
14         return temper(*seed = *seed * 1103515245 + 12345)/2;
15 }