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#include "common.hpp"
TEST(arithmethic, negation)
{
using P = fpm::fixed_24_8;
EXPECT_EQ(P(-13.125), -P( 13.125));
EXPECT_EQ(P( 13.125), -P(-13.125));
}
TEST(arithmethic, addition)
{
using P = fpm::fixed_24_8;
EXPECT_EQ(P(10.75), P(3.5) + P(7.25));
}
TEST(arithmethic, subtraction)
{
using P = fpm::fixed_24_8;
EXPECT_EQ(P(-3.75), P(3.5) - P(7.25));
}
TEST(arithmethic, multiplication)
{
using P = fpm::fixed_24_8;
EXPECT_EQ(P(-25.375), P(3.5) * P(-7.25));
}
TEST(arithmethic, division)
{
using P = fpm::fixed_24_8;
EXPECT_EQ(P(3.5 / 7.25), P(3.5) / P(7.25));
EXPECT_EQ(P(-3.5 / 7.25), P(-3.5) / P(7.25));
EXPECT_EQ(P(3.5 / -7.25), P(3.5) / P(-7.25));
EXPECT_EQ(P(-3.5 / -7.25), P(-3.5) / P(-7.25));
#ifndef NDEBUG
EXPECT_DEATH(P(1) / P(0), "");
#endif
}
TEST(arithmethic, division_range)
{
using P = fpm::fixed<std::int32_t, std::int64_t, 12>;
// These calculation will overflow and produce
// wrong results without the intermediate type.
EXPECT_EQ(P(32), P(256) / P(8));
}
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