rand.c\prng\src - musl - musl - an implementation of the standard library for Linux-based systems

#include <stdlib.h>
#include <stdint.h>
static uint64_t seed;
void srand(unsigned s)
{
	seed = s-1;
}
int rand(void)
{
	seed = 6364136223846793005ULL*seed + 1;
	return seed>>33;
}