libsimple_support/unit_tests/math_abs.cpp

#include "simple/support/math/abs.hpp"

#include <cassert>
#include <type_traits>

using simple::support::abs;

int main()
{
	static_assert(std::is_same_v<decltype(abs(short{})), int>);
	constexpr auto x = abs(-1);
	static_assert(x == 1);
	static_assert(abs(x) == 1);
	assert(abs(-13) == 13);
	assert(abs(13) == 13);
	static_assert(noexcept(abs(0)));
	static_assert(noexcept(abs(0.0)));
	static_assert(abs(-0.0) == 0.0);
	return 0;
}