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Support for derived dimensions in exp added

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Mateusz Pusz
2019-09-18 06:36:52 -06:00
parent 422c078cb2
commit 32a65a7405
14 changed files with 207 additions and 113 deletions
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test/unit_test/test_dimension.cpp
+19 -4
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@@ -27,16 +27,31 @@ using namespace std::experimental::units;
namespace {
inline constexpr base_dimension d0{"d0"};
inline constexpr base_dimension d1{"d1"};
inline constexpr base_dimension d2{"d2"};
inline constexpr base_dimension d3{"d3"};
struct d0 { static constexpr const char* value = "d0"; };
struct d1 { static constexpr const char* value = "d1"; };
struct d2 { static constexpr const char* value = "d2"; };
struct d3 { static constexpr const char* value = "d3"; };
// exp_invert
static_assert(std::is_same_v<exp_invert_t<exp<d0, 1>>, exp<d0, -1>>);
static_assert(std::is_same_v<exp_invert_t<exp<d1, -1>>, exp<d1, 1>>);
// extract
template<typename T>
struct typeinfo;
static_assert(std::is_same_v<detail::extract_t<>, dimension<>>);
static_assert(std::is_same_v<detail::extract_t<exp<d0, 1>>, dimension<exp<d0, 1>>>);
static_assert(std::is_same_v<detail::extract_t<exp<d0, 1>, exp<d1, 2>>, dimension<exp<d0, 1>, exp<d1, 2>>>);
using dim0 = dimension<>;
using dim1 = dimension<exp<d0, 1>>;
using dim2 = dimension<exp<d0, 1>, exp<d1, 2>>;
static_assert(std::is_same_v<detail::extract_t<exp<dim0, 2>, exp<d0, 1>>, dimension<exp<d0, 1>>>);
static_assert(std::is_same_v<detail::extract_t<exp<dim1, 2>, exp<d0, 1>>, dimension<exp<d0, 2>, exp<d0, 1>>>);
static_assert(std::is_same_v<detail::extract_t<exp<dim2, -2>, exp<d0, 1>, exp<d1, 2>>, dimension<exp<d0, -2>, exp<d1, -4>, exp<d0, 1>, exp<d1, 2>>>);
// make_dimension
static_assert(std::is_same_v<make_dimension_t<exp<d0, 1>>, dimension<exp<d0, 1>>>);