Function main

tests/test_rng.cpp:7–88

using namespace OpenApoc;

int main(int argc, char **argv)
{
	if (config().parseOptions(argc, argv))
	{
		return EXIT_FAILURE;
	}
	Xorshift128Plus<uint64_t> rng{};

	uint64_t r1 = rng();
	uint64_t r2 = rng();

	uint64_t expected_r1 = 0x03aacfee1f751183;
	uint64_t expected_r2 = 0xcb8aa3521c8fc259;
	uint64_t expected_r3 = 0xdd420b258a17fa82;

	if (r1 != expected_r1)
	{
		LogError("unexpected r1 0x%016x, expected 0x%016x", r1, expected_r1);
		return EXIT_FAILURE;
	}

	if (r2 != expected_r2)
	{
		LogError("unexpected r2 0x%016x, expected 0x%016x", r2, expected_r2);
		return EXIT_FAILURE;
	}

	// Reseed and check it matches
	rng.seed(0);
	r1 = rng();
	r2 = rng();

	if (r1 != expected_r1)
	{
		LogError("unexpected post-reseed r1 0x%016x, expected 0x%016x", r1, expected_r1);
		return EXIT_FAILURE;
	}

	if (r2 != expected_r2)
	{
		LogError("unexpected post-reseed r2 0x%016x, expected 0x%016x", r2, expected_r2);
		return EXIT_FAILURE;
	}

	// Save the state to another rng and check that result matches

	uint64_t s[2];
	Xorshift128Plus<uint64_t> rng2{};

	rng.getState(s);
	rng2.setState(s);

	uint64_t r3 = rng2();
	if (r3 != expected_r3)
	{
		LogError("unexpected r3 0x%016x, expected 0x%016x", r3, expected_r3);
		return EXIT_FAILURE;
	}