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ratio_pow and ratio_sqrt fixed + unit tests added

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This commit is contained in:
Mateusz Pusz
2019-09-18 18:34:54 -06:00
parent 2d74b72893
commit 58106618ac
3 changed files with 33 additions and 3 deletions
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19
src/include/units/ratio.h
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@@ -128,10 +128,15 @@ namespace std::experimental::units {
};
template<typename R>
struct ratio_pow_impl<R, 0> {
struct ratio_pow_impl<R, 1> {
using type = R;
};
template<typename R>
struct ratio_pow_impl<R, 0> {
using type = ratio<1>;
};
}
template<Ratio R, std::size_t N>
@@ -158,10 +163,20 @@ namespace std::experimental::units {
return sqrt_impl(v, 1, v);
}
template<typename R>
struct ratio_sqrt_impl {
using type = ratio<detail::sqrt_impl(R::num), detail::sqrt_impl(R::den)>;
};
template<std::intmax_t Den>
struct ratio_sqrt_impl<ratio<0, Den>> {
using type = ratio<0>;
};
}
template<Ratio R>
using ratio_sqrt = ratio<detail::sqrt_impl(R::den), detail::sqrt_impl(R::num)>;
using ratio_sqrt = detail::ratio_sqrt_impl<R>::type;
// common_ratio

2
test/unit_test/CMakeLists.txt
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@@ -25,7 +25,7 @@ add_library(unit_tests
test_custom_units.cpp
test_dimension.cpp
test_quantity.cpp
test_tools.cpp
test_ratio.cpp
test_type_list.cpp
test_units.cpp
)

15
test/unit_test/test_tools.cpp → test/unit_test/test_ratio.cpp
View File

@@ -41,6 +41,21 @@ namespace {
static_assert(std::is_same_v<ratio_divide<ratio<1, 8>, ratio<2>>, ratio<1, 16>>);
static_assert(std::is_same_v<ratio_divide<ratio<6>, ratio<3>>, ratio<2>>);
static_assert(std::is_same_v<ratio_pow<ratio<2>, 0>, ratio<1>>);
static_assert(std::is_same_v<ratio_pow<ratio<2>, 1>, ratio<2>>);
static_assert(std::is_same_v<ratio_pow<ratio<2>, 2>, ratio<4>>);
static_assert(std::is_same_v<ratio_pow<ratio<2>, 3>, ratio<8>>);
static_assert(std::is_same_v<ratio_pow<ratio<1, 2>, 0>, ratio<1>>);
static_assert(std::is_same_v<ratio_pow<ratio<1, 2>, 1>, ratio<1, 2>>);
static_assert(std::is_same_v<ratio_pow<ratio<1, 2>, 2>, ratio<1, 4>>);
static_assert(std::is_same_v<ratio_pow<ratio<1, 2>, 3>, ratio<1, 8>>);
static_assert(std::is_same_v<ratio_sqrt<ratio<9>>, ratio<3>>);
static_assert(std::is_same_v<ratio_sqrt<ratio<4>>, ratio<2>>);
static_assert(std::is_same_v<ratio_sqrt<ratio<1>>, ratio<1>>);
static_assert(std::is_same_v<ratio_sqrt<ratio<0>>, ratio<0>>);
static_assert(std::is_same_v<ratio_sqrt<ratio<1, 4>>, ratio<1, 2>>);
// common_ratio
static_assert(std::is_same_v<common_ratio<ratio<1>, ratio<1000>>, ratio<1>>);