mirror of
https://github.com/mpusz/mp-units.git
synced 2026-01-27 17:42:33 +01:00
59 lines
3.0 KiB
C++
59 lines
3.0 KiB
C++
// The MIT License (MIT)
|
|
//
|
|
// Copyright (c) 2018 Mateusz Pusz
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
#include "units/unit.h"
|
|
#include "units/physical/si/prefixes.h"
|
|
|
|
namespace {
|
|
|
|
using namespace units;
|
|
|
|
struct metre : named_unit<metre, "m", si::prefix> {};
|
|
struct centimetre : prefixed_unit<centimetre, si::centi, metre> {};
|
|
struct kilometre : prefixed_unit<kilometre, si::kilo, metre> {};
|
|
struct yard : named_scaled_unit<yard, "yd", no_prefix, ratio<9'144, 1, -4>, metre> {};
|
|
struct foot : named_scaled_unit<foot, "ft", no_prefix, ratio<1, 3>, yard> {};
|
|
struct dim_length : base_dimension<"length", metre> {};
|
|
|
|
struct second : named_unit<second, "s", si::prefix> {};
|
|
struct hour : named_scaled_unit<hour, "h", no_prefix, ratio<36, 1, 2>, second> {};
|
|
struct dim_time : base_dimension<"time", second> {};
|
|
|
|
struct kelvin : named_unit<kelvin, "K", no_prefix> {};
|
|
// struct kilokelvin : prefixed_unit<kilokelvin, si::kilo, kelvin> {}; // should not compile (prefix not allowed for this reference unit)
|
|
|
|
struct metre_per_second : unit<metre_per_second> {};
|
|
struct dim_velocity : derived_dimension<dim_velocity, metre_per_second, units::exp<dim_length, 1>, units::exp<dim_time, -1>> {};
|
|
struct kilometre_per_hour : deduced_unit<kilometre_per_hour, dim_velocity, kilometre, hour> {};
|
|
|
|
static_assert(std::is_same_v<downcast<scaled_unit<ratio<1>, metre>>, metre>);
|
|
static_assert(std::is_same_v<downcast<scaled_unit<ratio<1, 1, -2>, metre>>, centimetre>);
|
|
static_assert(std::is_same_v<downcast<scaled_unit<ratio<yard::ratio::num, yard::ratio::den, yard::ratio::exp>, metre>>, yard>);
|
|
static_assert(std::is_same_v<downcast<scaled_unit<ratio_multiply<typename yard::ratio, ratio<1, 3>>, metre>>, foot>);
|
|
static_assert(std::is_same_v<downcast<scaled_unit<ratio_divide<typename kilometre::ratio, typename hour::ratio>, metre_per_second>>, kilometre_per_hour>);
|
|
|
|
static_assert(centimetre::symbol == "cm");
|
|
static_assert(kilometre::symbol == "km");
|
|
static_assert(kilometre_per_hour::symbol == "km/h");
|
|
|
|
} // namespace
|