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563b358d5e
Dimensionless quantities are now represented by quantity types rather than by plain representation types. Only dimensionless quantities with `unitless` unit are implicitly convertible from representation types. `units::exp()` now is a function doing std::exp() on a representation type (previous `units::exp` class template was renamed to `units::exponent`). BREAKING_CHANGE: gcc-9.3 support removed BREAKING_CHANGE: `exp` and `Exp` renamed to `exponent` and `Exponent` Resolves #27 Resolves #42
102 lines
3.1 KiB
C++
102 lines
3.1 KiB
C++
// The MIT License (MIT)
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//
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// Copyright (c) 2018 Mateusz Pusz
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#include "units/math.h"
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#include "units/physical/si/area.h"
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#include "units/physical/si/volume.h"
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#include <catch2/catch.hpp>
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using namespace units;
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using namespace units::physical::si;
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// classical
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TEST_CASE("'pow<N>()' on quantity changes the value and the dimension accordingly", "[math][pow]")
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{
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SECTION ("'pow<0>(q)' returns '1'") {
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CHECK(pow<0>(2q_m) == 1);
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}
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SECTION ("'pow<1>(q)' returns 'q'") {
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CHECK(pow<1>(2q_m) == 2q_m);
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}
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SECTION ("'pow<2>(q)' squares both the value and a dimension") {
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CHECK(pow<2>(2q_m) == 4q_m2);
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}
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SECTION ("'pow<3>(q)' cubes both the value and a dimension") {
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CHECK(pow<3>(2q_m) == 8q_m3);
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}
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}
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TEST_CASE("'sqrt()' on quantity changes the value and the dimension accordingly", "[math][sqrt]")
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{
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REQUIRE(sqrt(4q_m2) == 2q_m);
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}
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TEST_CASE("absolute functions on quantity returns the absolute value", "[math][abs][fabs]")
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{
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SECTION ("'abs()' on a negative quantity returns the abs")
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{
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SECTION ("integral representation")
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{
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REQUIRE(abs(-1q_m) == 1q_m);
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}
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#ifndef COMP_MSVC
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SECTION ("floating-point representation")
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{
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REQUIRE(abs(-1.q_m) == 1q_m);
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}
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#endif
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}
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SECTION ("'abs()' on a positive quantity returns the abs")
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{
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SECTION ("integral representation")
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{
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REQUIRE(abs(1q_m) == 1q_m);
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}
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#ifndef COMP_MSVC
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SECTION ("floating-point representation")
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{
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REQUIRE(abs(1.q_m) == 1q_m);
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}
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#endif
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}
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}
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TEST_CASE("numeric_limits functions", "[limits]")
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{
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SECTION ("'epsilon' works as expected using default floating type") {
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REQUIRE(epsilon<decltype(1.q_m)>().count() == std::numeric_limits<decltype(1.q_m)::rep>::epsilon());
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}
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SECTION ("'epsilon' works as expected using integers") {
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REQUIRE(epsilon<decltype(1q_m)>().count() == std::numeric_limits<decltype(1q_m)::rep>::epsilon());
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}
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SECTION ("'epsilon' works as expected using mixed Rep types") {
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REQUIRE(epsilon<decltype(1q_m)>().count() != std::numeric_limits<decltype(1.q_m)::rep>::epsilon());
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}
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}
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