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Merge branch 'downcasting_2.0'

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Mateusz Pusz
2020-09-09 20:31:03 +02:00
parent dcc2d24c8e 72ed03fbf9
commit e367afed71
22 changed files with 300 additions and 145 deletions
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test/unit_test/static/unit_test.cpp
+9 -5
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@@ -21,6 +21,7 @@
// SOFTWARE.
#include "units/unit.h"
#include "units/bits/equivalent.h"
#include "units/physical/si/prefixes.h"
namespace {
@@ -28,6 +29,9 @@ namespace {
using namespace units;
using namespace units::physical;
template<typename T, typename U>
inline constexpr bool compare = DOWNCAST_MODE != 0 ? std::is_same_v<T, U> : (std::is_same_v<T, U> || units::equivalent<T, U>);
struct metre : named_unit<metre, "m", si::prefix> {};
struct centimetre : prefixed_unit<centimetre, si::centi, metre> {};
struct kilometre : prefixed_unit<kilometre, si::kilo, metre> {};
@@ -49,11 +53,11 @@ struct metre_per_second : unit<metre_per_second> {};
struct dim_speed : derived_dimension<dim_speed, metre_per_second, units::exponent<dim_length, 1>, units::exponent<dim_time, -1>> {};
struct kilometre_per_hour : deduced_unit<kilometre_per_hour, dim_speed, kilometre, hour> {};
static_assert(is_same_v<downcast<scaled_unit<ratio(1), metre>>, metre>);
static_assert(is_same_v<downcast<scaled_unit<ratio(1, 1, -2), metre>>, centimetre>);
static_assert(is_same_v<downcast<scaled_unit<ratio(yard::ratio.num, yard::ratio.den, yard::ratio.exp), metre>>, yard>);
static_assert(is_same_v<downcast<scaled_unit<yard::ratio * ratio(1, 3), metre>>, foot>);
static_assert(is_same_v<downcast<scaled_unit<kilometre::ratio / hour::ratio, metre_per_second>>, kilometre_per_hour>);
static_assert(compare<downcast<scaled_unit<ratio(1), metre>>, metre>);
static_assert(compare<downcast<scaled_unit<ratio(1, 1, -2), metre>>, centimetre>);
static_assert(compare<downcast<scaled_unit<ratio(yard::ratio.num, yard::ratio.den, yard::ratio.exp), metre>>, yard>);
static_assert(compare<downcast<scaled_unit<yard::ratio * ratio(1, 3), metre>>, foot>);
static_assert(compare<downcast<scaled_unit<kilometre::ratio / hour::ratio, metre_per_second>>, kilometre_per_hour>);
#if COMP_GCC >= 10
static_assert([]<ratio R>() { return !requires { typename scaled_unit<R, metre>; }; }.template operator()<ratio(-1, 1)>()); // negative unit ratio