Method rand

Source/astcenc_mathlib.cpp:39–48

See header for documentation. */

/* See header for documentation. */
uint64_t astc::rand(uint64_t state[2])
{
	uint64_t s0 = state[0];
	uint64_t s1 = state[1];
	uint64_t res = s0 + s1;
	s1 ^= s0;
	state[0] = rotl(s0, 24) ^ s1 ^ (s1 << 16);
	state[1] = rotl(s1, 37);
	return res;
}