Function factorial

deps/jemalloc/test/unit/math.c:27–37

}

static uint64_t
factorial(unsigned x) {
	uint64_t ret = 1;
	unsigned i;

	for (i = 2; i <= x; i++) {
		ret *= (uint64_t)i;
	}

	return ret;
}

TEST_BEGIN(test_ln_gamma_factorial) {
	unsigned x;