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Only test pi if float is smaller than long double

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This commit is contained in:
Chip Hogg
2022-01-28 20:44:29 +00:00
parent 243238b3fa
commit 2384276ae0
1 changed files with 9 additions and 7 deletions
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16
test/unit_test/runtime/magnitude_test.cpp
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@@ -163,15 +163,17 @@ TEST_CASE("magnitude converts to numerical value")
SECTION("pi to arbitrary power performs computations in most accurate type at compile time")
{
constexpr auto pi_cubed = pi_to_the<3>();
if constexpr (sizeof(float) < sizeof(long double)) {
constexpr auto pi_cubed = pi_to_the<3>();
auto cube = [](auto x) { return x * x * x; };
constexpr auto via_float = cube(std::numbers::pi_v<float>);
constexpr auto via_long_double = static_cast<float>(cube(std::numbers::pi_v<long double>));
auto cube = [](auto x) { return x * x * x; };
constexpr auto via_float = cube(std::numbers::pi_v<float>);
constexpr auto via_long_double = static_cast<float>(cube(std::numbers::pi_v<long double>));
constexpr auto pi_cubed_value = pi_cubed.value<float>;
REQUIRE(pi_cubed_value != via_float);
CHECK(pi_cubed_value == via_long_double);
constexpr auto pi_cubed_value = pi_cubed.value<float>;
REQUIRE(pi_cubed_value != via_float);
CHECK(pi_cubed_value == via_long_double);
}
}
SECTION("Impossible requests are prevented at compile time")