#include "catch.hpp"

#include "DivModByConst.hh"

#include "DivModBySame.hh"

using namespace openmsx;

template<uint32_t DIVISOR>

static void test(const DivModByConst<DIVISOR>& c, const DivModBySame& s,

                 uint64_t dividend)

{

	uint64_t rd = dividend / DIVISOR;

	if (uint32_t(rd) == rd) {

		CHECK(c.div(dividend) == (dividend / DIVISOR));

		CHECK(s.div(dividend) == (dividend / DIVISOR));

		CHECK(c.mod(dividend) == (dividend % DIVISOR));

		CHECK(s.mod(dividend) == (dividend % DIVISOR));

	}

}

template<uint32_t DIVISOR>

static void test()

{

	DivModByConst<DIVISOR> c;

	DivModBySame s; s.setDivisor(DIVISOR);

	for (uint64_t dividend : {0ULL, 1ULL, 2ULL, 3ULL, 4ULL, 5ULL, 7ULL,

			          100ULL, 10015ULL, 12410015ULL, 0x1234567890ULL,

				  0x7FFFFFFFFFFFFFFFULL, 0x8000000000000000ULL,

				  0xFFFFFFFF00000000ULL, 0xFFFFFFFFFFFFFFFFULL}) {

		test(c, s, dividend);

	}

}

TEST_CASE("DivModByConst, DivModBySame")

{

	test<1>();

	test<2>();

	test<3>();

	test<4>();

	test<5>();

	test<7>();

	test<10>();

	test<128>();

	test<1000>();

	test<90000>();

	test<90017>();

}