mirror of
https://github.com/mpusz/mp-units.git
synced 2025-06-25 01:01:33 +02:00
64 lines
2.3 KiB
C++
64 lines
2.3 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 <catch2/matchers/catch_matchers_templated.hpp>
|
|
#include <mp-units/compat_macros.h>
|
|
#include <algorithm>
|
|
#ifdef MP_UNITS_MODULES
|
|
import mp_units;
|
|
#else
|
|
#include <mp-units/format.h>
|
|
#include <mp-units/framework/quantity.h>
|
|
#endif
|
|
|
|
namespace mp_units {
|
|
|
|
template<Quantity T>
|
|
struct AlmostEqualsMatcher : Catch::Matchers::MatcherGenericBase {
|
|
explicit AlmostEqualsMatcher(const T& target) : target_{target} {}
|
|
|
|
template<std::convertible_to<T> U>
|
|
requires std::same_as<typename T::rep, typename U::rep> && treat_as_floating_point<typename T::rep>
|
|
bool match(const U& other) const
|
|
{
|
|
using std::abs;
|
|
using common = std::common_type_t<T, U>;
|
|
const auto x = common(target_).numerical_value_in(common::unit);
|
|
const auto y = common(other).numerical_value_in(common::unit);
|
|
const auto maxXYOne = std::max({typename T::rep{1}, abs(x), abs(y)});
|
|
return abs(x - y) <= std::numeric_limits<typename T::rep>::epsilon() * maxXYOne;
|
|
}
|
|
|
|
std::string describe() const override { return "almost equals: " + MP_UNITS_STD_FMT::format("{}", target_); }
|
|
|
|
private:
|
|
const T& target_;
|
|
};
|
|
|
|
template<Quantity T>
|
|
AlmostEqualsMatcher<T> AlmostEquals(const T& target)
|
|
{
|
|
return AlmostEqualsMatcher<T>{target};
|
|
}
|
|
|
|
} // namespace mp_units
|