mp-units/test/static/cgs_test.cpp

// The MIT License (MIT)
//
// Copyright (c) 2018 Mateusz Pusz
//
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// 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
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//
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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#include "test_tools.h"
#include <mp-units/systems/cgs.h>
#include <mp-units/systems/isq/mechanics.h>
#include <mp-units/systems/isq/space_and_time.h>
#include <mp-units/systems/si/units.h>
#if MP_UNITS_HOSTED
#include <mp-units/cartesian_vector.h>
#endif

namespace {

using namespace mp_units;
using namespace mp_units::cgs;
using namespace mp_units::cgs::unit_symbols;
#if MP_UNITS_HOSTED
using v = cartesian_vector<double>;
#endif

// https://en.wikipedia.org/wiki/Centimetre%E2%80%93gram%E2%80%93second_system_of_units#Definitions_and_conversion_factors_of_CGS_units_in_mechanics
static_assert(isq::length(100 * cm) == isq::length(1 * si::metre));
static_assert(isq::mass(1000 * g) == isq::mass(1 * si::kilogram));
static_assert(isq::time(1 * s) == isq::time(1 * si::second));
static_assert(isq::speed(100 * cm / s) == isq::speed(1 * si::metre / si::second));
#if MP_UNITS_HOSTED
static_assert(isq::acceleration(v{100} * Gal) == isq::acceleration(v{1} * si::metre / square(si::second)));
static_assert(isq::force(v{100'000} * dyn) == isq::force(v{1} * si::newton));
#endif
static_assert(isq::energy(10'000'000 * erg) == isq::energy(1 * si::joule));
static_assert(isq::power(10'000'000 * erg / s) == isq::power(1 * si::watt));
static_assert(isq::pressure(10 * Ba) == isq::pressure(1 * si::pascal));
static_assert(isq::dynamic_viscosity(10 * P) == isq::dynamic_viscosity(1 * si::pascal * si::second));
static_assert(isq::kinematic_viscosity(10'000 * St) == isq::kinematic_viscosity(1 * square(si::metre) / si::second));
static_assert(isq::wavenumber(1 * K) == isq::wavenumber(100 / si::metre));

static_assert(10'000'000 * erg + 1 * si::joule == 2 * si::joule);
static_assert(1 * si::joule + 10'000'000 * erg == 2 * si::joule);
static_assert(is_of_type<10'000'000 * erg + 1 * si::joule, quantity<erg, int>>);
static_assert(is_of_type<1 * si::joule + 10'000'000 * erg, quantity<erg, int>>);

static_assert(1 * K + 100 / si::metre == 2 * K);
static_assert(100 / si::metre + 1 * K == 2 * K);
static_assert(is_of_type<1 * K + 100 / si::metre, quantity<inverse(si::metre), int>>);
static_assert(is_of_type<100 / si::metre + 1 * K, quantity<inverse(si::metre), int>>);

}  // namespace