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mp-units/test/static/concepts_test.cpp
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Mateusz Pusz dd5854a965 refactor(test): drop the legacy character enum from the test suite 
Replace `using enum quantity_character_legacy` plus bare character names in the ISQ/HEP
tests with local `quantity_character` constants (`scalar`, `complex_scalar`, `vector`,
`tensor`) built from `quantity_tensor_order` / `quantity_field`, and switch the
`RepresentationOf` / `QUANTITY_SPEC_` character arguments in the concept and quantity-spec
tests to the bare-axis spelling. `real_scalar` is renamed to `scalar` for consistency with
the order-named constants. `apparent_power` (derived from the complex `complex_power`)
pins `quantity_field::real`, matching the library definition.

This removes the final legacy-enum usage from the repository.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-25 00:10:20 +02:00

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// 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 <mp-units/compat_macros.h>
#include <mp-units/systems/isq.h>
#include <mp-units/systems/si.h>
#if MP_UNITS_HOSTED
#include <mp-units/cartesian_tensor.h>
#include <mp-units/cartesian_vector.h>
#endif
#ifdef MP_UNITS_IMPORT_STD
import std;
#else
#include <optional>
#include <type_traits>
#if MP_UNITS_HOSTED
#include <chrono>
#include <complex>
#include <string>
#endif
#endif
namespace {
using namespace mp_units;
inline constexpr struct my_origin final : absolute_point_origin<isq::length> {
} my_origin;
inline constexpr struct my_relative_origin final : relative_point_origin<my_origin + isq::length(42 * si::metre)> {
} my_relative_origin;
inline constexpr auto dim_speed = isq::dim_length / isq::dim_time;
// BaseDimension
static_assert(detail::BaseDimension<struct isq::dim_length>);
static_assert(!detail::BaseDimension<decltype(isq::dim_length / isq::dim_time)>);
static_assert(!detail::BaseDimension<decltype(inverse(isq::dim_time))>);
static_assert(!detail::BaseDimension<decltype(pow<2>(isq::dim_length))>);
static_assert(!detail::BaseDimension<derived_dimension<struct isq::dim_length, per<struct isq::dim_time>>>);
static_assert(!detail::BaseDimension<MP_UNITS_NONCONST_TYPE(dim_speed)>);
static_assert(!detail::BaseDimension<base_dimension<"L">>);
static_assert(!detail::BaseDimension<struct si::metre>);
static_assert(!detail::BaseDimension<int>);
// Dimension
static_assert(Dimension<struct isq::dim_length>);
static_assert(Dimension<decltype(isq::dim_length / isq::dim_time)>);
static_assert(Dimension<decltype(inverse(isq::dim_time))>);
static_assert(Dimension<decltype(pow<2>(isq::dim_length))>);
static_assert(Dimension<derived_dimension<struct isq::dim_length, per<struct isq::dim_time>>>);
static_assert(Dimension<struct dimension_one>);
static_assert(Dimension<MP_UNITS_NONCONST_TYPE(dim_speed)>);
static_assert(!Dimension<base_dimension<"L">>);
static_assert(!Dimension<struct si::metre>);
static_assert(!Dimension<int>);
// DimensionOf
static_assert(DimensionOf<struct isq::dim_length, isq::dim_length>);
static_assert(DimensionOf<struct isq::dim_length, isq::height.dimension>);
static_assert(DimensionOf<struct isq::dim_length, isq::radius.dimension>);
static_assert(!DimensionOf<struct isq::dim_length, isq::length>);
static_assert(!DimensionOf<struct isq::length, isq::dim_length>);
static_assert(!DimensionOf<struct isq::length, isq::length>);
static_assert(!DimensionOf<struct isq::dim_length, isq::dim_time>);
static_assert(!DimensionOf<struct isq::dim_length, isq::duration>);
static_assert(!DimensionOf<struct isq::dim_time, isq::dim_length>);
static_assert(!DimensionOf<struct isq::dim_time, isq::length>);
static_assert(!DimensionOf<struct isq::length, isq::dim_time>);
static_assert(!DimensionOf<struct isq::length, isq::duration>);
static_assert(!DimensionOf<struct isq::duration, isq::dim_length>);
static_assert(!DimensionOf<struct isq::duration, isq::length>);
static_assert(DimensionOf<decltype(isq::dim_length / isq::dim_time), isq::speed.dimension>);
static_assert(DimensionOf<decltype(isq::force.dimension * isq::duration.dimension), isq::impulse.dimension>);
static_assert(DimensionOf<decltype(isq::angular_momentum.dimension / isq::angular_velocity.dimension),
isq::moment_of_inertia.dimension>);
// QuantitySpec
inline constexpr auto speed = isq::length / isq::duration;
static_assert(QuantitySpec<struct isq::length>);
static_assert(QuantitySpec<struct isq::radius>);
static_assert(QuantitySpec<struct isq::speed>);
static_assert(QuantitySpec<kind_of_<struct isq::length>>);
static_assert(QuantitySpec<decltype(isq::length / isq::duration)>);
static_assert(QuantitySpec<decltype(pow<2>(isq::length))>);
static_assert(QuantitySpec<struct dimensionless>);
static_assert(QuantitySpec<MP_UNITS_NONCONST_TYPE(speed)>);
static_assert(!QuantitySpec<struct isq::dim_length>);
static_assert(!QuantitySpec<int>);
// QuantitySpecOf
static_assert(QuantitySpecOf<struct isq::length, isq::length>);
static_assert(QuantitySpecOf<struct isq::height, isq::length>);
static_assert(!QuantitySpecOf<struct isq::length, isq::height>);
static_assert(QuantitySpecOf<struct isq::displacement, isq::length>);
static_assert(!QuantitySpecOf<struct isq::length, isq::displacement>);
static_assert(QuantitySpecOf<struct isq::thickness, isq::width>);
static_assert(!QuantitySpecOf<struct isq::width, isq::thickness>);
static_assert(QuantitySpecOf<kind_of_<struct isq::length>, isq::height>);
static_assert(QuantitySpecOf<kind_of_<struct isq::length>, isq::displacement>);
static_assert(!QuantitySpecOf<struct isq::angular_measure, dimensionless>);
static_assert(!QuantitySpecOf<struct isq::angular_measure, kind_of<dimensionless>>);
static_assert(!QuantitySpecOf<kind_of_<struct isq::angular_measure>, dimensionless>);
static_assert(!QuantitySpecOf<kind_of_<struct isq::angular_measure>, kind_of<dimensionless>>);
static_assert(!QuantitySpecOf<struct dimensionless, isq::angular_measure>);
static_assert(!QuantitySpecOf<struct dimensionless, kind_of<isq::angular_measure>>);
static_assert(QuantitySpecOf<kind_of_<struct dimensionless>, isq::angular_measure>);
static_assert(QuantitySpecOf<kind_of_<struct dimensionless>, kind_of<isq::angular_measure>>);
static_assert(!QuantitySpecOf<struct isq::solid_angular_measure, isq::angular_measure>);
static_assert(!QuantitySpecOf<struct isq::solid_angular_measure, kind_of<isq::angular_measure>>);
static_assert(!QuantitySpecOf<kind_of_<struct isq::solid_angular_measure>, isq::angular_measure>);
static_assert(!QuantitySpecOf<kind_of_<struct isq::solid_angular_measure>, kind_of<isq::angular_measure>>);
// NamedQuantitySpec
static_assert(detail::NamedQuantitySpec<struct isq::length>);
static_assert(detail::NamedQuantitySpec<struct isq::radius>);
static_assert(detail::NamedQuantitySpec<struct isq::speed>);
static_assert(!detail::NamedQuantitySpec<kind_of_<struct isq::length>>);
static_assert(!detail::NamedQuantitySpec<decltype(isq::length / isq::duration)>);
static_assert(!detail::NamedQuantitySpec<decltype(pow<2>(isq::length))>);
static_assert(detail::NamedQuantitySpec<struct dimensionless>);
static_assert(!detail::NamedQuantitySpec<MP_UNITS_NONCONST_TYPE(speed)>);
static_assert(!detail::NamedQuantitySpec<struct isq::dim_length>);
static_assert(!detail::NamedQuantitySpec<int>);
// DerivedQuantitySpec
static_assert(!detail::DerivedQuantitySpec<struct isq::length>);
static_assert(!detail::DerivedQuantitySpec<struct isq::radius>);
static_assert(!detail::DerivedQuantitySpec<kind_of_<struct isq::length>>);
static_assert(!detail::DerivedQuantitySpec<struct isq::speed>);
static_assert(detail::DerivedQuantitySpec<decltype(isq::length / isq::duration)>);
static_assert(detail::DerivedQuantitySpec<decltype(pow<2>(isq::length))>);
static_assert(!detail::DerivedQuantitySpec<struct dimensionless>);
static_assert(detail::DerivedQuantitySpec<MP_UNITS_NONCONST_TYPE(speed)>);
static_assert(!detail::DerivedQuantitySpec<struct isq::dim_length>);
static_assert(!detail::DerivedQuantitySpec<int>);
// QuantityKindSpec
static_assert(!detail::QuantityKindSpec<struct isq::length>);
static_assert(!detail::QuantityKindSpec<struct isq::radius>);
static_assert(detail::QuantityKindSpec<kind_of_<struct isq::length>>);
static_assert(!detail::QuantityKindSpec<struct isq::speed>);
static_assert(!detail::QuantityKindSpec<decltype(isq::length / isq::duration)>);
static_assert(!detail::QuantityKindSpec<decltype(pow<2>(isq::length))>);
static_assert(!detail::QuantityKindSpec<struct dimensionless>);
static_assert(!detail::QuantityKindSpec<MP_UNITS_NONCONST_TYPE(speed)>);
static_assert(!detail::QuantityKindSpec<struct isq::dim_length>);
static_assert(!detail::QuantityKindSpec<int>);
// Unit
static_assert(Unit<struct si::metre>);
static_assert(Unit<MP_UNITS_NONCONST_TYPE(si::kilogram)>);
static_assert(Unit<si::kilo_<struct si::gram>>);
static_assert(Unit<decltype(si::metre / si::second)>);
static_assert(Unit<decltype(inverse(si::second))>);
static_assert(Unit<decltype(mag<10> * si::second)>);
static_assert(Unit<decltype(square(si::metre))>);
static_assert(Unit<decltype(pow<2>(si::metre))>);
static_assert(Unit<struct si::standard_gravity>);
static_assert(Unit<scaled_unit<mag<10>, struct si::second>>);
static_assert(Unit<derived_unit<struct si::metre, per<struct si::second>>>);
static_assert(Unit<struct one>);
static_assert(!Unit<named_unit<"?", kind_of<isq::length>>>);
static_assert(!Unit<named_unit<"?", si::metre / si::second>>);
static_assert(!Unit<named_unit<"?", si::metre, kind_of<isq::length>>>);
static_assert(!Unit<prefixed_unit<"?", mag<10>, si::second>>);
static_assert(!Unit<struct isq::dim_length>);
static_assert(!Unit<int>);
#if MP_UNITS_HOSTED
static_assert(!Unit<std::chrono::seconds>);
#endif
// PrefixableUnit
static_assert(PrefixableUnit<struct si::metre>);
static_assert(!PrefixableUnit<MP_UNITS_NONCONST_TYPE(si::kilogram)>);
static_assert(!PrefixableUnit<si::kilo_<struct si::gram>>);
static_assert(!PrefixableUnit<decltype(si::metre / si::second)>);
static_assert(!PrefixableUnit<decltype(inverse(si::second))>);
static_assert(!PrefixableUnit<decltype(mag<10> * si::second)>);
static_assert(!PrefixableUnit<decltype(square(si::metre))>);
static_assert(!PrefixableUnit<decltype(pow<2>(si::metre))>);
static_assert(!PrefixableUnit<struct si::standard_gravity>);
static_assert(!PrefixableUnit<scaled_unit<mag<10>, struct si::second>>);
static_assert(!PrefixableUnit<derived_unit<struct si::metre, per<struct si::second>>>);
static_assert(!PrefixableUnit<struct one>);
static_assert(!PrefixableUnit<named_unit<"?", kind_of<isq::length>>>);
static_assert(!PrefixableUnit<named_unit<"?", si::metre / si::second>>);
static_assert(!PrefixableUnit<named_unit<"?", si::metre, kind_of<isq::length>>>);
static_assert(!PrefixableUnit<prefixed_unit<"?", mag<10>, si::second>>);
static_assert(!PrefixableUnit<struct isq::dim_length>);
static_assert(!PrefixableUnit<int>);
#if MP_UNITS_HOSTED
static_assert(!PrefixableUnit<std::chrono::seconds>);
#endif
// Unit
static_assert(Unit<struct si::metre>);
static_assert(Unit<MP_UNITS_NONCONST_TYPE(si::kilogram)>);
static_assert(Unit<si::kilo_<struct si::gram>>);
static_assert(Unit<decltype(si::metre / si::second)>);
static_assert(Unit<decltype(inverse(si::second))>);
static_assert(Unit<decltype(mag<10> * si::second)>);
static_assert(Unit<decltype(square(si::metre))>);
static_assert(Unit<decltype(pow<2>(si::metre))>);
static_assert(Unit<struct si::standard_gravity>);
static_assert(Unit<scaled_unit<mag<10>, struct si::second>>);
static_assert(Unit<derived_unit<struct si::metre, per<struct si::second>>>);
static_assert(Unit<struct one>);
static_assert(Unit<decltype(get_common_unit(si::kilo<si::metre> / si::hour, si::metre / si::second))>);
static_assert(!Unit<named_unit<"?", kind_of<isq::length>>>);
static_assert(!Unit<named_unit<"?", si::metre / si::second>>);
static_assert(!Unit<named_unit<"?", si::metre, kind_of<isq::length>>>);
static_assert(!Unit<prefixed_unit<"?", mag<10>, si::second>>);
static_assert(!Unit<struct isq::dim_length>);
static_assert(!Unit<int>);
#if MP_UNITS_HOSTED
static_assert(!Unit<std::chrono::seconds>);
#endif
// UnitOf
static_assert(UnitOf<struct si::metre, isq::length>);
static_assert(UnitOf<struct si::metre, isq::radius>);
static_assert(UnitOf<MP_UNITS_NONCONST_TYPE(si::kilogram), isq::mass>);
static_assert(UnitOf<struct si::hertz, isq::frequency>);
static_assert(UnitOf<struct si::hertz, inverse(isq::duration)>);
static_assert(UnitOf<struct one, dimensionless>);
static_assert(UnitOf<struct percent, dimensionless>);
static_assert(UnitOf<struct si::radian, isq::angular_measure>);
static_assert(UnitOf<struct si::degree, isq::angular_measure>);
static_assert(UnitOf<struct one, isq::angular_measure>);
static_assert(UnitOf<struct percent, isq::angular_measure>);
static_assert(UnitOf<MP_UNITS_NONCONST_TYPE(si::radian / si::second), isq::angular_velocity>);
static_assert(UnitOf<MP_UNITS_NONCONST_TYPE(one / si::second), isq::angular_velocity>);
static_assert(!UnitOf<struct si::radian, dimensionless>);
static_assert(!UnitOf<struct si::metre, isq::duration>);
// Reference
static_assert(Reference<struct si::metre>);
static_assert(Reference<decltype(si::metre / si::second)>);
static_assert(Reference<decltype(isq::length[si::metre])>);
static_assert(Reference<decltype(isq::radius[si::metre])>);
static_assert(Reference<decltype(isq::radius[si::metre] / isq::duration[si::second])>);
static_assert(!Reference<struct isq::length>);
static_assert(!Reference<kind_of_<struct isq::length>>);
static_assert(!Reference<struct isq::dim_length>);
static_assert(!Reference<int>);
// ReferenceOf
static_assert(ReferenceOf<struct si::metre, isq::length>);
static_assert(ReferenceOf<struct si::metre, isq::radius>);
static_assert(!ReferenceOf<struct si::second, isq::length>);
static_assert(ReferenceOf<decltype(isq::length[si::metre]), isq::length>);
static_assert(!ReferenceOf<decltype(isq::length[si::metre]), isq::radius>);
static_assert(ReferenceOf<decltype(isq::radius[si::metre]), isq::length>);
static_assert(ReferenceOf<decltype(isq::radius[si::metre]), isq::radius>);
static_assert(!ReferenceOf<struct si::second, isq::dim_length>);
static_assert(ReferenceOf<struct one, dimensionless>);
static_assert(ReferenceOf<decltype(dimensionless[one]), dimensionless>);
static_assert(ReferenceOf<decltype(isq::rotation[one]), isq::rotation>);
static_assert(ReferenceOf<decltype(isq::rotation[one]), dimensionless>);
static_assert(ReferenceOf<struct si::radian, isq::angular_measure>);
static_assert(ReferenceOf<struct si::degree, isq::angular_measure>);
static_assert(ReferenceOf<decltype(get_common_unit(si::degree, si::radian)), isq::angular_measure>);
static_assert(!ReferenceOf<struct si::radian, dimensionless>);
static_assert(!ReferenceOf<struct si::degree, dimensionless>);
static_assert(!ReferenceOf<decltype(get_common_unit(si::degree, si::radian)), dimensionless>);
static_assert(ReferenceOf<decltype(isq::angular_measure[si::radian]), isq::angular_measure>);
static_assert(ReferenceOf<decltype(isq::angular_measure[si::degree]), isq::angular_measure>);
static_assert(!ReferenceOf<decltype(isq::angular_measure[si::radian]), dimensionless>);
static_assert(!ReferenceOf<decltype(isq::angular_measure[si::degree]), dimensionless>);
static_assert(ReferenceOf<struct one, isq::rotation>);
static_assert(ReferenceOf<struct one, isq::angular_measure>);
static_assert(!ReferenceOf<decltype(dimensionless[one]), isq::rotation>);
static_assert(!ReferenceOf<decltype(dimensionless[one]), isq::angular_measure>);
// RepresentationOf
// int: real scalar and, as degenerate lower-rank cases, also vector and tensor, but not complex.
// A tensor of order zero is a scalar and a tensor of order one is a vector (ISO 80000-2:2019, 18),
// so a lower-rank representation can stand in for a higher-rank quantity (never the reverse).
static_assert(RepresentationOf<int, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<int, quantity_field::complex>);
static_assert(RepresentationOf<int, quantity_tensor_order::vector>);
static_assert(RepresentationOf<int, quantity_tensor_order::tensor>);
// double: same as int
static_assert(RepresentationOf<double, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<double, quantity_field::complex>);
static_assert(RepresentationOf<double, quantity_tensor_order::vector>);
static_assert(RepresentationOf<double, quantity_tensor_order::tensor>);
// bool: disabled via disable_real<bool>
static_assert(!RepresentationOf<bool, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<bool, quantity_field::complex>);
static_assert(!RepresentationOf<bool, quantity_tensor_order::vector>);
static_assert(!RepresentationOf<bool, quantity_tensor_order::tensor>);
// non-numeric type: not a representation at all
static_assert(!RepresentationOf<std::optional<int>, quantity_tensor_order::scalar>);
#if MP_UNITS_HOSTED
static_assert(!RepresentationOf<std::complex<double>, quantity_tensor_order::scalar>);
static_assert(RepresentationOf<std::complex<double>, quantity_field::complex>);
static_assert(!RepresentationOf<std::complex<double>, quantity_tensor_order::vector>);
static_assert(!RepresentationOf<std::complex<double>, quantity_tensor_order::tensor>);
// cartesian_vector<double>: 3D vector, not scalar; also a degenerate tensor (a vector is a
// tensor of the first order)
static_assert(!RepresentationOf<cartesian_vector<double>, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<cartesian_vector<double>, quantity_field::complex>);
static_assert(RepresentationOf<cartesian_vector<double>, quantity_tensor_order::vector>);
static_assert(RepresentationOf<cartesian_vector<double>, quantity_tensor_order::tensor>);
// cartesian_vector<int>: integer element type is supported (norm() returns double via std::hypot)
static_assert(!RepresentationOf<cartesian_vector<int>, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<cartesian_vector<int>, quantity_field::complex>);
static_assert(RepresentationOf<cartesian_vector<int>, quantity_tensor_order::vector>);
static_assert(RepresentationOf<cartesian_vector<int>, quantity_tensor_order::tensor>);
// cartesian_vector<complex<double>>: a complex 3-vector. Its Hermitian magnitude is a real scalar
// (computed via the modulus CPO), so it is a valid vector (and degenerate tensor) representation,
// but not a scalar of either field. NOTE: V2 has a single `vector` character with no real/complex
// distinction, so a complex vector satisfies the plain `vector` character. The V3 (field, order)
// split is what will let `vector` mean specifically `(real, order 1)`.
static_assert(!RepresentationOf<cartesian_vector<std::complex<double>>, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<cartesian_vector<std::complex<double>>, quantity_field::complex>);
static_assert(RepresentationOf<cartesian_vector<std::complex<double>>, quantity_tensor_order::vector>);
static_assert(RepresentationOf<cartesian_vector<std::complex<double>>, quantity_tensor_order::tensor>);
// cartesian_tensor<complex<double>>: a complex second-order tensor; tensor-only, never vector/scalar
static_assert(!RepresentationOf<cartesian_tensor<std::complex<double>>, quantity_field::complex>);
static_assert(!RepresentationOf<cartesian_tensor<std::complex<double>>, quantity_tensor_order::vector>);
static_assert(RepresentationOf<cartesian_tensor<std::complex<double>>, quantity_tensor_order::tensor>);
// quantity types must never themselves be a representation (NotQuantity guard)
static_assert(!RepresentationOf<quantity<si::metre>, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<quantity<si::metre>, quantity_tensor_order::vector>);
// cartesian_tensor<double>: second-order tensor; tensor-only - never a (lower-rank) vector or scalar
static_assert(!RepresentationOf<cartesian_tensor<double>, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<cartesian_tensor<double>, quantity_field::complex>);
static_assert(!RepresentationOf<cartesian_tensor<double>, quantity_tensor_order::vector>);
static_assert(RepresentationOf<cartesian_tensor<double>, quantity_tensor_order::tensor>);
// cartesian_tensor<int>: integer element type is supported (Frobenius norm returns double)
static_assert(!RepresentationOf<cartesian_tensor<int>, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<cartesian_tensor<int>, quantity_tensor_order::vector>);
static_assert(RepresentationOf<cartesian_tensor<int>, quantity_tensor_order::tensor>);
// cartesian_tensor whose element is a quantity must not be a representation
static_assert(!RepresentationOf<cartesian_tensor<quantity<si::metre>>, quantity_tensor_order::tensor>);
// a tensor-character ISQ quantity accepts a second-order tensor representation
static_assert(Quantity<quantity<isq::stress[si::pascal], cartesian_tensor<double>>>);
// `Vector` subsumes `Tensor` (a vector is a tensor of order one), so a Vector-constrained overload
// is preferred over a Tensor-constrained one for vector representations, while a genuine tensor
// matches only the Tensor overload. This locks the subsumption ordering used to rank overloads.
namespace subsumption_check {
template<detail::Tensor>
consteval int grade()
{
return 2;
}
template<detail::Vector>
consteval int grade()
{
return 1;
}
static_assert(grade<cartesian_vector<double>>() == 1); // Vector wins (subsumes Tensor)
static_assert(grade<cartesian_tensor<double>>() == 2); // only Tensor matches
static_assert(grade<double>() == 1); // arithmetic type is a degenerate vector
} // namespace subsumption_check
// cartesian_vector whose element is a quantity must not be a representation
static_assert(!RepresentationOf<cartesian_vector<quantity<si::metre>>, quantity_tensor_order::vector>);
static_assert(!RepresentationOf<std::chrono::seconds, quantity_tensor_order::scalar>);
static_assert(!RepresentationOf<std::string, quantity_tensor_order::scalar>);
#endif
// Quantity
static_assert(Quantity<quantity<si::metre>>);
static_assert(Quantity<quantity<isq::length[si::metre]>>);
static_assert(Quantity<quantity<si::metre, int>>);
static_assert(Quantity<quantity<isq::length[si::metre], int>>);
#if MP_UNITS_HOSTED
static_assert(!Quantity<std::chrono::seconds>);
#endif
static_assert(!Quantity<quantity_point<si::metre, my_origin>>);
static_assert(!Quantity<decltype(isq::length[si::metre])>);
// QuantityOf
static_assert(QuantityOf<quantity<si::metre>, isq::length>);
static_assert(QuantityOf<quantity<si::metre>, isq::radius>);
static_assert(!QuantityOf<quantity<si::second>, isq::length>);
static_assert(QuantityOf<quantity<isq::length[si::metre]>, isq::length>);
static_assert(!QuantityOf<quantity<isq::length[si::metre]>, isq::radius>);
static_assert(QuantityOf<quantity<isq::radius[si::metre]>, isq::length>);
static_assert(QuantityOf<quantity<isq::radius[si::metre]>, isq::radius>);
static_assert(!QuantityOf<quantity<si::second>, isq::dim_length>);
static_assert(QuantityOf<quantity<one>, dimensionless>);
static_assert(QuantityOf<quantity<dimensionless[one]>, dimensionless>);
static_assert(QuantityOf<quantity<isq::rotation[one]>, isq::rotation>);
static_assert(QuantityOf<quantity<isq::rotation[one]>, dimensionless>);
static_assert(QuantityOf<quantity<si::radian>, isq::angular_measure>);
static_assert(!QuantityOf<quantity<si::radian>, dimensionless>);
static_assert(QuantityOf<quantity<isq::angular_measure[si::radian]>, isq::angular_measure>);
static_assert(!QuantityOf<quantity<isq::angular_measure[si::radian]>, dimensionless>);
static_assert(QuantityOf<quantity<one>, isq::rotation>);
static_assert(QuantityOf<quantity<one>, isq::angular_measure>);
static_assert(!QuantityOf<quantity<dimensionless[one]>, isq::rotation>);
static_assert(!QuantityOf<quantity<dimensionless[one]>, isq::angular_measure>);
// QuantityLike
#if MP_UNITS_HOSTED
static_assert(QuantityLike<std::chrono::seconds>);
static_assert(QuantityLike<std::chrono::hours>);
#endif
static_assert(!QuantityLike<quantity<isq::duration[si::second]>>);
static_assert(!QuantityLike<quantity_point<isq::length[si::metre], my_origin>>);
static_assert(!QuantityLike<int>);
// QuantityPoint
static_assert(QuantityPoint<quantity_point<si::metre, my_origin>>);
static_assert(QuantityPoint<quantity_point<si::metre, my_relative_origin>>);
static_assert(QuantityPoint<quantity_point<isq::length[si::metre], my_origin>>);
static_assert(QuantityPoint<quantity_point<isq::length[si::metre], my_relative_origin, int>>);
static_assert(QuantityPoint<quantity_point<isq::radius[si::metre], my_origin>>);
static_assert(QuantityPoint<quantity_point<isq::radius[si::metre], my_relative_origin>>);
static_assert(!QuantityPoint<decltype(isq::length[si::metre])>);
static_assert(!QuantityPoint<absolute_point_origin<isq::length>>);
static_assert(!QuantityPoint<struct my_origin>);
static_assert(!QuantityPoint<struct my_relative_origin>);
#if MP_UNITS_HOSTED
static_assert(!QuantityPoint<std::chrono::seconds>);
static_assert(!QuantityPoint<std::chrono::time_point<std::chrono::system_clock>>);
#endif
static_assert(!QuantityPoint<int>);
// QuantityPointOf
static_assert(QuantityPointOf<quantity_point<si::metre, my_origin>, isq::length>);
static_assert(QuantityPointOf<quantity_point<si::metre, my_origin>, isq::radius>);
static_assert(QuantityPointOf<quantity_point<isq::length[si::metre], my_origin>, isq::length>);
static_assert(!QuantityPointOf<quantity_point<isq::length[si::metre], my_origin>, isq::radius>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_origin>, isq::length>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_origin>, isq::radius>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_relative_origin>, isq::length>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_relative_origin>, isq::radius>);
static_assert(QuantityPointOf<quantity_point<si::metre, my_origin>, my_origin>);
static_assert(QuantityPointOf<quantity_point<si::metre, my_origin>, my_relative_origin>);
static_assert(QuantityPointOf<quantity_point<si::metre, my_relative_origin>, my_relative_origin>);
static_assert(QuantityPointOf<quantity_point<si::metre, my_relative_origin>, my_origin>);
static_assert(QuantityPointOf<quantity_point<isq::length[si::metre], my_origin>, my_origin>);
static_assert(QuantityPointOf<quantity_point<isq::length[si::metre], my_origin>, my_relative_origin>);
static_assert(QuantityPointOf<quantity_point<isq::length[si::metre], my_relative_origin>, my_relative_origin>);
static_assert(QuantityPointOf<quantity_point<isq::length[si::metre], my_relative_origin>, my_origin>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_origin>, my_origin>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_origin>, my_relative_origin>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_relative_origin>, my_relative_origin>);
static_assert(QuantityPointOf<quantity_point<isq::radius[si::metre], my_relative_origin>, my_origin>);
// PointOrigin
static_assert(PointOrigin<struct my_origin>);
static_assert(PointOrigin<struct my_relative_origin>);
static_assert(!PointOrigin<absolute_point_origin<isq::length>>);
static_assert(!PointOrigin<relative_point_origin<my_origin + 42 * si::metre>>);
static_assert(!PointOrigin<quantity_point<si::metre, my_origin>>);
static_assert(!PointOrigin<quantity_point<isq::length[si::metre], my_origin>>);
static_assert(!PointOrigin<quantity_point<isq::radius[si::metre], my_origin>>);
static_assert(!PointOrigin<decltype(isq::length[si::metre])>);
#if MP_UNITS_HOSTED
static_assert(!PointOrigin<std::chrono::seconds>);
static_assert(!PointOrigin<std::chrono::time_point<std::chrono::system_clock>>);
#endif
static_assert(!PointOrigin<int>);
// PointOriginFor
static_assert(PointOriginFor<struct my_origin, isq::length>);
static_assert(PointOriginFor<struct my_origin, isq::radius>);
static_assert(!PointOriginFor<struct my_origin, isq::time>);
static_assert(PointOriginFor<struct my_relative_origin, isq::length>);
static_assert(PointOriginFor<struct my_relative_origin, isq::radius>);
static_assert(!PointOriginFor<struct my_relative_origin, isq::time>);
static_assert(!PointOriginFor<quantity_point<si::metre, my_origin>, isq::length>);
static_assert(!PointOriginFor<quantity_point<si::metre, my_origin>, isq::radius>);
static_assert(!PointOriginFor<quantity_point<si::metre, my_origin>, isq::time>);
static_assert(!PointOriginFor<quantity_point<isq::length[si::metre], my_origin>, isq::length>);
static_assert(!PointOriginFor<quantity_point<isq::length[si::metre], my_origin>, isq::radius>);
static_assert(!PointOriginFor<quantity_point<isq::length[si::metre], my_origin>, isq::time>);
static_assert(!PointOriginFor<quantity_point<isq::radius[si::metre], my_origin>, isq::length>);
static_assert(!PointOriginFor<quantity_point<isq::radius[si::metre], my_origin>, isq::radius>);
static_assert(!PointOriginFor<quantity_point<isq::radius[si::metre], my_origin>, isq::time>);
static_assert(!PointOriginFor<quantity_point<isq::radius[si::metre], my_relative_origin>, isq::length>);
static_assert(!PointOriginFor<quantity_point<isq::radius[si::metre], my_relative_origin>, isq::radius>);
static_assert(!PointOriginFor<quantity_point<isq::radius[si::metre], my_relative_origin>, isq::time>);
static_assert(!PointOriginFor<decltype(isq::length[si::metre]), isq::length>);
#if MP_UNITS_HOSTED
static_assert(!PointOriginFor<std::chrono::seconds, isq::length>);
static_assert(!PointOriginFor<std::chrono::time_point<std::chrono::system_clock>, isq::length>);
#endif
static_assert(!PointOriginFor<int, isq::length>);
// QuantityPointLike
#if MP_UNITS_HOSTED
static_assert(QuantityPointLike<std::chrono::time_point<std::chrono::system_clock>>);
static_assert(!QuantityPointLike<std::chrono::seconds>);
#endif
static_assert(!QuantityPointLike<quantity<isq::time[si::second]>>);
static_assert(!QuantityPointLike<quantity_point<si::metre, my_origin>>);
static_assert(!QuantityPointLike<int>);
// Quantity Character Concepts
#if MP_UNITS_HOSTED
// TODO provide support for the below when quantity specifications expressions are done
static_assert(detail::Scalar<quantity<one>>);
static_assert(detail::Scalar<quantity<one, int>>);
static_assert(detail::Scalar<quantity<si::metre>>);
static_assert(detail::Scalar<quantity<isq::speed[si::metre / si::second], int>>);
// static_assert(detail::Scalar<quantity<isq::complex_power[si::volt * si::ampere], std::complex<double>>>);
static_assert(!detail::Scalar<quantity<one, cartesian_vector<double>>>);
static_assert(!detail::Scalar<quantity<si::metre, cartesian_vector<double>>>);
static_assert(!detail::Scalar<quantity<isq::velocity[si::metre / si::second], cartesian_vector<double>>>);
static_assert(!detail::Scalar<quantity_point<one>>);
static_assert(!detail::Scalar<quantity_point<si::metre>>);
static_assert(detail::RealScalar<quantity<one>>);
static_assert(detail::RealScalar<quantity<one, int>>);
static_assert(detail::RealScalar<quantity<si::metre>>);
static_assert(detail::RealScalar<quantity<isq::speed[si::metre / si::second], int>>);
// static_assert(!detail::RealScalar<quantity<isq::velocity[si::metre / si::second], int>>);
static_assert(!detail::RealScalar<quantity<isq::complex_power[si::volt * si::ampere], std::complex<double>>>);
static_assert(!detail::ComplexScalar<quantity<one>>);
static_assert(!detail::ComplexScalar<quantity<one, int>>);
static_assert(!detail::ComplexScalar<quantity<si::metre>>);
static_assert(!detail::ComplexScalar<quantity<isq::speed[si::metre / si::second], int>>);
static_assert(!detail::ComplexScalar<quantity<isq::velocity[si::metre / si::second], int>>);
// static_assert(detail::ComplexScalar<quantity<isq::complex_power[si::volt * si::ampere], std::complex<double>>>);
// static_assert(detail::Vector<quantity<one>>);
// static_assert(detail::Vector<quantity<one, int>>);
// static_assert(detail::Vector<quantity<si::metre>>);
static_assert(!detail::Vector<quantity<isq::speed[si::metre / si::second], int>>);
// static_assert(detail::Vector<quantity<isq::velocity[si::metre / si::second], int>>);
static_assert(!detail::Vector<quantity<isq::complex_power[si::volt * si::ampere], std::complex<double>>>);
// static_assert(detail::Vector<quantity<one>, cartesian_vector<double>>);
// static_assert(detail::Vector<quantity<one, cartesian_vector<int>>>);
// static_assert(detail::Vector<quantity<si::metre>, cartesian_vector<double>>);
// static_assert(detail::Vector<quantity<isq::velocity[si::metre / si::second], cartesian_vector<int>>>);
// Scaling concept classification
// double: floating-point → UsesFloatingPointScaling only
static_assert(detail::UsesFloatingPointScaling<double>);
static_assert(!detail::UsesIntegerScaling<double>);
// int: integral scalar → UsesIntegerScaling only
static_assert(!detail::UsesFloatingPointScaling<int>);
static_assert(detail::UsesIntegerScaling<int>);
// cartesian_vector<double>: FP element type → UsesFloatingPointScaling
static_assert(detail::UsesFloatingPointScaling<cartesian_vector<double>>);
static_assert(!detail::UsesIntegerScaling<cartesian_vector<double>>);
// cartesian_vector<int>: integral element → UsesIntegerScaling
static_assert(!detail::UsesFloatingPointScaling<cartesian_vector<int>>);
static_assert(detail::UsesIntegerScaling<cartesian_vector<int>>);
#endif
} // namespace
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