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feat: implicit point origins compatibility between different quantity specs added

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Mateusz Pusz
2023-12-22 16:35:06 +01:00
parent 31a5c76672
commit a962182e13
2 changed files with 410 additions and 25 deletions
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68
src/core/include/mp-units/quantity_point.h
View File

@@ -63,27 +63,45 @@ struct relative_point_origin {
static constexpr PointOrigin auto absolute_point_origin = QP.absolute_point_origin;
};
template<PointOrigin PO1, PointOrigin PO2>
[[nodiscard]] consteval bool operator==(PO1 po1, PO2 po2)
{
if constexpr (detail::AbsolutePointOrigin<PO1> && detail::AbsolutePointOrigin<PO2>)
return is_same_v<typename PO1::_type_, typename PO2::_type_>;
else if constexpr (detail::RelativePointOrigin<PO1> && detail::RelativePointOrigin<PO2>)
return PO1::quantity_point == PO2::quantity_point;
else if constexpr (detail::RelativePointOrigin<PO1>)
return detail::same_absolute_point_origins(po1, po2) &&
detail::is_eq_zero(PO1::quantity_point.quantity_from(PO1::quantity_point.absolute_point_origin));
else if constexpr (detail::RelativePointOrigin<PO2>)
return detail::same_absolute_point_origins(po1, po2) &&
detail::is_eq_zero(PO2::quantity_point.quantity_from(PO2::quantity_point.absolute_point_origin));
}
template<QuantitySpec auto QS>
struct implicit_zeroth_point_origin_ : absolute_point_origin<implicit_zeroth_point_origin_<QS>, QS> {};
template<QuantitySpec auto QS>
inline constexpr implicit_zeroth_point_origin_<QS> implicit_zeroth_point_origin;
namespace detail {
template<PointOrigin PO>
inline constexpr bool is_specialization_of_implicit_zeroth_point_origin = false;
template<auto QS>
inline constexpr bool is_specialization_of_implicit_zeroth_point_origin<implicit_zeroth_point_origin_<QS>> = true;
template<PointOrigin PO>
[[nodiscard]] consteval bool is_implicit_zeroth_point_origin(PO)
{
return is_specialization_of_implicit_zeroth_point_origin<PO>;
}
} // namespace detail
template<PointOrigin PO1, PointOrigin PO2>
[[nodiscard]] consteval bool operator==(PO1 po1, PO2 po2)
{
if constexpr (detail::AbsolutePointOrigin<PO1> && detail::AbsolutePointOrigin<PO2>)
return is_same_v<typename PO1::_type_, typename PO2::_type_> ||
(detail::is_implicit_zeroth_point_origin(po1) && detail::is_implicit_zeroth_point_origin(po2) &&
interconvertible(po1.quantity_spec, po2.quantity_spec));
else if constexpr (detail::RelativePointOrigin<PO1> && detail::RelativePointOrigin<PO2>)
return PO1::quantity_point == PO2::quantity_point;
else if constexpr (detail::RelativePointOrigin<PO1>)
return detail::same_absolute_point_origins(po1, po2) &&
detail::is_eq_zero(PO1::quantity_point.quantity_from_zero());
else if constexpr (detail::RelativePointOrigin<PO2>)
return detail::same_absolute_point_origins(po1, po2) &&
detail::is_eq_zero(PO2::quantity_point.quantity_from_zero());
}
template<Reference R>
[[nodiscard]] consteval PointOriginFor<get_quantity_spec(R{})> auto zeroth_point_origin(R)
{
@@ -151,7 +169,7 @@ public:
template<typename Q>
requires QuantityOf<std::remove_cvref_t<Q>, get_quantity_spec(R)> && std::constructible_from<quantity_type, Q> &&
(point_origin == zeroth_point_origin(R)) && (point_origin == zeroth_point_origin(Q::reference))
(point_origin == zeroth_point_origin(R)) && (implicitly_convertible(Q::quantity_spec, quantity_spec))
constexpr explicit quantity_point(Q&& q) : quantity_from_origin_is_an_implementation_detail_(std::forward<Q>(q))
{
}
@@ -241,11 +259,13 @@ public:
return *this - PO2{};
}
// returns always a value relative to the unit's zero
// available only if point is defined in terms of a unit's zero point origin
[[nodiscard]] constexpr Quantity auto quantity_from_zero() const
requires(detail::same_absolute_point_origins(absolute_point_origin, zeroth_point_origin(R)))
{
if constexpr (requires { unit.point_origin; }) {
// original quantity point unit can be lost in the below operation
const auto q = quantity_from(unit.point_origin);
if constexpr (requires { q.in(unit); })
// restore the unit if possible (non-truncating)
// original quantity point unit can be lost in the below operation
const auto q = quantity_from(zeroth_point_origin(R));
if constexpr (requires { q.in(unit); })
@@ -378,7 +398,10 @@ template<auto R1, auto PO1, typename Rep1, auto R2, typename Rep2>
const quantity<R2, Rep2>& q)
requires requires { qp.quantity_ref_from(PO1) + q; }
{
return quantity_point{qp.quantity_ref_from(PO1) + q, PO1};
if constexpr (detail::is_implicit_zeroth_point_origin(PO1))
return quantity_point{qp.quantity_ref_from(PO1) + q};
else
return quantity_point{qp.quantity_ref_from(PO1) + q, PO1};
}
template<auto R1, typename Rep1, auto R2, auto PO2, typename Rep2>
@@ -412,7 +435,10 @@ template<auto R1, auto PO1, typename Rep1, auto R2, typename Rep2>
const quantity<R2, Rep2>& q)
requires requires { qp.quantity_ref_from(PO1) - q; }
{
return quantity_point{qp.quantity_ref_from(PO1) - q, PO1};
if constexpr (detail::is_implicit_zeroth_point_origin(PO1))
return quantity_point{qp.quantity_ref_from(PO1) - q};
else
return quantity_point{qp.quantity_ref_from(PO1) - q, PO1};
}
template<PointOrigin PO, Quantity Q>

367
test/unit_test/static/quantity_point_test.cpp
View File

@@ -25,6 +25,7 @@
#include <mp-units/quantity_point.h>
#include <mp-units/systems/isq/isq.h>
#include <mp-units/systems/si/si.h>
#include <mp-units/systems/usc/usc.h>
#include <limits>
#include <type_traits>
#include <utility>
@@ -33,9 +34,13 @@ namespace {
using namespace mp_units;
using namespace mp_units::si::unit_symbols;
using namespace mp_units::usc::unit_symbols;
using namespace std::chrono_literals;
using sys_seconds = std::chrono::time_point<std::chrono::system_clock, std::chrono::seconds>;
inline constexpr struct zeroth_length : absolute_point_origin<zeroth_length, isq::length> {
} zeroth_length;
inline constexpr struct mean_sea_level : absolute_point_origin<mean_sea_level, isq::height> {
} mean_sea_level;
@@ -88,6 +93,7 @@ static_assert(my_ground_level == ground_level);
static_assert(same_ground_level1 == ground_level);
static_assert(same_ground_level2 == my_ground_level);
static_assert(mean_sea_level != zeroth_length);
static_assert(mean_sea_level != other_absolute_level);
static_assert(my_mean_sea_level != other_absolute_level);
static_assert(ground_level != other_ground_level);
@@ -123,6 +129,17 @@ static_assert(zeroth_point_origin(si::kelvin / si::second) ==
static_assert(zeroth_point_origin(si::degree_Celsius / si::second) ==
implicit_zeroth_point_origin<kind_of<isq::thermodynamic_temperature / isq::time>>);
static_assert(implicit_zeroth_point_origin<isq::length / isq::time> == implicit_zeroth_point_origin<isq::speed>);
static_assert(implicit_zeroth_point_origin<inverse(isq::period_duration)> ==
implicit_zeroth_point_origin<isq::frequency>);
static_assert(implicit_zeroth_point_origin<kind_of<isq::length>> == implicit_zeroth_point_origin<isq::height>);
static_assert(implicit_zeroth_point_origin<kind_of<inverse(isq::time)>> ==
implicit_zeroth_point_origin<isq::frequency>);
static_assert(implicit_zeroth_point_origin<isq::length> != implicit_zeroth_point_origin<isq::height>);
static_assert(implicit_zeroth_point_origin<isq::width> != implicit_zeroth_point_origin<isq::height>);
static_assert(implicit_zeroth_point_origin<inverse(isq::time)> != implicit_zeroth_point_origin<isq::frequency>);
/////////////////////
// class invariants
/////////////////////
@@ -142,6 +159,8 @@ concept invalid_types = requires {
requires !requires { typename QP<isq::width[m], ground_level, int>; };
requires !requires { typename QP<isq::length[m], mean_sea_level, int>; };
requires !requires { typename QP<isq::length[m], ground_level, int>; };
requires !requires { typename QP<isq::length[m], implicit_zeroth_point_origin<isq::height>, int>; };
requires !requires { typename QP<isq::width[m], implicit_zeroth_point_origin<isq::height>, int>; };
// quantity used as Rep
requires !requires { typename QP<si::metre, mean_sea_level, quantity<si::metre, int>>; };
// quantity point used as Rep
@@ -167,6 +186,9 @@ concept valid_types = requires {
typename QP<si::metre, ground_level, int>;
typename QP<isq::height[m], ground_level, int>;
typename QP<special_height[m], ground_level, int>;
typename QP<isq::height[m], implicit_zeroth_point_origin<isq::length>, int>;
typename QP<isq::height[m], implicit_zeroth_point_origin<kind_of<isq::length>>, int>;
typename QP<si::metre, implicit_zeroth_point_origin<isq::height>, int>;
};
static_assert(valid_types<quantity_point>);
@@ -201,6 +223,22 @@ static_assert(std::three_way_comparable<quantity_point<si::metre, mean_sea_level
// member values
//////////////////
static_assert(quantity_point<si::metre>::reference == si::metre);
static_assert(quantity_point<si::metre>::quantity_spec == kind_of<isq::length>);
static_assert(quantity_point<si::metre>::dimension == isq::dim_length);
static_assert(quantity_point<si::metre>::unit == si::metre);
static_assert(is_of_type<quantity_point<si::metre>::point_origin, implicit_zeroth_point_origin_<kind_of<isq::length>>>);
static_assert(
is_of_type<quantity_point<si::metre>::absolute_point_origin, implicit_zeroth_point_origin_<kind_of<isq::length>>>);
static_assert(quantity_point<isq::height[m]>::reference == isq::height[m]);
static_assert(quantity_point<isq::height[m]>::quantity_spec == isq::height);
static_assert(quantity_point<isq::height[m]>::dimension == isq::dim_length);
static_assert(quantity_point<isq::height[m]>::unit == si::metre);
static_assert(is_of_type<quantity_point<isq::height[m]>::point_origin, implicit_zeroth_point_origin_<isq::height>>);
static_assert(
is_of_type<quantity_point<isq::height[m]>::absolute_point_origin, implicit_zeroth_point_origin_<isq::height>>);
static_assert(quantity_point<si::metre, mean_sea_level>::reference == si::metre);
static_assert(quantity_point<si::metre, mean_sea_level>::quantity_spec == kind_of<isq::length>);
static_assert(quantity_point<si::metre, mean_sea_level>::dimension == isq::dim_length);
@@ -348,6 +386,80 @@ static_assert(!std::convertible_to<int, quantity_point<dimensionless[one], zero,
// construction from a quantity
/////////////////////////////////
// -----------------------------
// implicit zeroth point origins
// -----------------------------
static_assert(std::constructible_from<quantity_point<si::metre>, quantity<si::metre>>);
static_assert(!std::convertible_to<quantity<si::metre>, quantity_point<si::metre>>);
static_assert(std::constructible_from<quantity_point<isq::height[m]>, quantity<isq::height[m]>>);
static_assert(!std::convertible_to<quantity<isq::height[m]>, quantity_point<isq::height[m]>>);
static_assert(std::constructible_from<quantity_point<isq::height[m]>, quantity<si::metre>>);
static_assert(!std::convertible_to<quantity<si::metre>, quantity_point<isq::height[m]>>);
static_assert(std::constructible_from<quantity_point<si::metre>, quantity<isq::height[m]>>);
static_assert(!std::convertible_to<quantity<isq::height[m]>, quantity_point<si::metre>>);
static_assert(std::constructible_from<quantity_point<m / s>, quantity<isq::speed[m / s]>>);
static_assert(!std::convertible_to<quantity<isq::speed[m / s]>, quantity_point<m / s>>);
static_assert(std::constructible_from<quantity_point<isq::speed[m / s]>, quantity<m / s>>);
static_assert(!std::convertible_to<quantity<m / s>, quantity_point<isq::speed[m / s]>>);
static_assert(std::constructible_from<quantity_point<isq::length[m] / isq::time[s]>, quantity<isq::speed[m / s]>>);
static_assert(!std::convertible_to<quantity<isq::speed[m / s]>, quantity_point<isq::length[m] / isq::time[s]>>);
static_assert(std::constructible_from<quantity_point<isq::speed[m / s]>, quantity<isq::length[m] / isq::time[s]>>);
static_assert(!std::convertible_to<quantity<isq::length[m] / isq::time[s]>, quantity_point<isq::speed[m / s]>>);
static_assert(std::constructible_from<quantity_point<isq::speed[m / s]>, quantity<m / s>>);
static_assert(!std::convertible_to<quantity<m / s>, quantity_point<isq::speed[m / s]>>);
static_assert(std::constructible_from<quantity_point<dimensionless[one]>, quantity<dimensionless[one]>>);
static_assert(!std::convertible_to<quantity<dimensionless[one]>, quantity_point<dimensionless[one]>>);
// different dimensions
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity<si::second>>);
static_assert(!std::convertible_to<quantity<si::second>, quantity_point<isq::height[m]>>);
// convertible but different quantity_specs
static_assert(std::constructible_from<quantity_point<isq::length[m]>, quantity<isq::height[m]>>);
static_assert(!std::convertible_to<quantity<isq::height[m]>, quantity_point<isq::length[m]>>);
static_assert(std::constructible_from<quantity_point<isq::height[m]>, quantity<special_height[m]>>);
static_assert(!std::convertible_to<quantity<special_height[m]>, quantity_point<isq::height[m]>>);
// quantity_specs with common_quantity_spec
static_assert(!std::constructible_from<quantity_point<isq::width[m]>, quantity<isq::height[m]>>);
static_assert(!std::convertible_to<quantity<isq::height[m]>, quantity_point<isq::width[m]>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity<isq::width[m]>>);
static_assert(!std::convertible_to<quantity<isq::width[m]>, quantity_point<isq::height[m]>>);
// non-convertible quantity_specs
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity<isq::length[m]>>);
static_assert(!std::convertible_to<quantity<isq::length[m]>, quantity_point<isq::height[m]>>);
static_assert(!std::constructible_from<quantity_point<special_height[m]>, quantity<isq::height[m]>>);
static_assert(!std::convertible_to<quantity<special_height[m]>, quantity_point<isq::height[m]>>);
// quantity-like
static_assert(!std::constructible_from<quantity_point<si::second>, std::chrono::seconds>);
static_assert(!std::convertible_to<std::chrono::seconds, quantity_point<si::second>>);
static_assert(!std::constructible_from<quantity_point<isq::time[s]>, std::chrono::seconds>);
static_assert(!std::convertible_to<std::chrono::seconds, quantity_point<isq::time[s]>>);
static_assert(!std::constructible_from<quantity_point<isq::period_duration[s]>, std::chrono::seconds>);
static_assert(!std::convertible_to<std::chrono::seconds, quantity_point<isq::period_duration[s]>>);
// ----------------------
// explicit point origins
// ----------------------
static_assert(!std::constructible_from<quantity_point<si::metre, mean_sea_level>, quantity<si::metre>>);
static_assert(!std::convertible_to<quantity<si::metre>, quantity_point<si::metre, mean_sea_level>>);
@@ -366,6 +478,13 @@ static_assert(!std::convertible_to<quantity<special_height[m]>, quantity_point<i
static_assert(!std::constructible_from<quantity_point<dimensionless[one], zero>, quantity<dimensionless[one]>>);
static_assert(!std::convertible_to<quantity<dimensionless[one]>, quantity_point<dimensionless[one], zero>>);
// quantity_specs with common_quantity_spec
static_assert(!std::constructible_from<quantity_point<isq::width[m], zeroth_length>, quantity<isq::height[m]>>);
static_assert(!std::convertible_to<quantity<isq::height[m]>, quantity_point<isq::width[m], zeroth_length>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m], zeroth_length>, quantity<isq::width[m]>>);
static_assert(!std::convertible_to<quantity<isq::width[m]>, quantity_point<isq::height[m], zeroth_length>>);
// different dimensions
static_assert(!std::constructible_from<quantity_point<isq::height[m], mean_sea_level>, quantity<si::second>>);
static_assert(!std::convertible_to<quantity<si::second>, quantity_point<isq::height[m], mean_sea_level>>);
@@ -404,7 +523,60 @@ static_assert(
// construction from a quantity point
///////////////////////////////////////
// same origins
// implicit origin
static_assert(std::constructible_from<quantity_point<si::metre>, quantity_point<si::metre>>);
static_assert(std::convertible_to<quantity_point<si::metre>, quantity_point<si::metre>>);
static_assert(std::constructible_from<quantity_point<isq::height[m]>, quantity_point<isq::height[m]>>);
static_assert(std::convertible_to<quantity_point<isq::height[m]>, quantity_point<isq::height[m]>>);
static_assert(std::constructible_from<quantity_point<si::metre>, quantity_point<isq::height[m]>>);
static_assert(std::convertible_to<quantity_point<isq::height[m]>, quantity_point<si::metre>>);
static_assert(std::constructible_from<quantity_point<isq::height[m]>, quantity_point<si::metre>>);
static_assert(std::convertible_to<quantity_point<si::metre>, quantity_point<isq::height[m]>>);
static_assert(
std::constructible_from<quantity_point<isq::length[m] / isq::time[s]>, quantity_point<isq::speed[m / s]>>);
static_assert(std::convertible_to<quantity_point<isq::speed[m / s]>, quantity_point<isq::length[m] / isq::time[s]>>);
static_assert(std::constructible_from<quantity_point<m / s>, quantity_point<isq::speed[m / s]>>);
static_assert(std::convertible_to<quantity_point<isq::speed[m / s]>, quantity_point<m / s>>);
static_assert(std::constructible_from<quantity_point<m / s>, quantity_point<isq::length[m] / isq::time[s]>>);
static_assert(std::convertible_to<quantity_point<isq::length[m] / isq::time[s]>, quantity_point<m / s>>);
// convertible but different quantity_specs
static_assert(!std::constructible_from<quantity_point<isq::length[m]>, quantity_point<isq::height[m]>>);
static_assert(!std::convertible_to<quantity_point<isq::height[m]>, quantity_point<isq::length[m]>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity_point<special_height[m]>>);
static_assert(!std::convertible_to<quantity_point<special_height[m]>, quantity_point<isq::height[m]>>);
// quantity_specs with common_quantity_spec
static_assert(!std::constructible_from<quantity_point<isq::width[m]>, quantity_point<isq::height[m]>>);
static_assert(!std::convertible_to<quantity_point<isq::height[m]>, quantity_point<isq::width[m]>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity_point<isq::width[m]>>);
static_assert(!std::convertible_to<quantity_point<isq::width[m]>, quantity_point<isq::height[m]>>);
// non-convertible quantity_specs
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity_point<isq::length[m]>>);
static_assert(!std::convertible_to<quantity_point<isq::length[m]>, quantity_point<isq::height[m]>>);
static_assert(!std::constructible_from<quantity_point<special_height[m]>, quantity_point<isq::height[m]>>);
static_assert(!std::convertible_to<quantity_point<isq::height[m]>, quantity_point<special_height[m]>>);
// mixed origins
static_assert(!std::constructible_from<quantity_point<si::metre, mean_sea_level>, quantity_point<si::metre>>);
static_assert(!std::convertible_to<quantity_point<si::metre>, quantity_point<si::metre, mean_sea_level>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m], mean_sea_level>, quantity_point<isq::height[m]>>);
static_assert(!std::convertible_to<quantity_point<isq::height[m]>, quantity_point<isq::height[m], mean_sea_level>>);
static_assert(!std::constructible_from<quantity_point<si::metre>, quantity_point<si::metre, mean_sea_level>>);
static_assert(!std::convertible_to<quantity_point<si::metre, mean_sea_level>, quantity_point<si::metre>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m]>, quantity_point<isq::height[m], mean_sea_level>>);
static_assert(!std::convertible_to<quantity_point<isq::height[m], mean_sea_level>, quantity_point<isq::height[m]>>);
// same explicit origins
static_assert(
std::constructible_from<quantity_point<si::metre, mean_sea_level>, quantity_point<si::metre, mean_sea_level>>);
static_assert(
@@ -501,6 +673,22 @@ static_assert(
static_assert(
std::convertible_to<quantity_point<dimensionless[one], zero>, quantity_point<dimensionless[percent], zero>>);
static_assert(std::constructible_from<quantity_point<isq::length[m], zeroth_length>,
quantity_point<isq::height[m], zeroth_length>>);
static_assert(
std::convertible_to<quantity_point<isq::height[m], zeroth_length>, quantity_point<isq::length[m], zeroth_length>>);
// quantity_specs with common_quantity_spec
static_assert(!std::constructible_from<quantity_point<isq::width[m], zeroth_length>,
quantity_point<isq::height[m], zeroth_length>>);
static_assert(
!std::convertible_to<quantity_point<isq::height[m], zeroth_length>, quantity_point<isq::width[m], zeroth_length>>);
static_assert(!std::constructible_from<quantity_point<isq::height[m], zeroth_length>,
quantity_point<isq::width[m], zeroth_length>>);
static_assert(
!std::convertible_to<quantity_point<isq::width[m], zeroth_length>, quantity_point<isq::height[m], zeroth_length>>);
// different dimensions
static_assert(
!std::constructible_from<quantity_point<isq::height[m], mean_sea_level>, quantity_point<si::kelvin, si::ice_point>>);
@@ -605,6 +793,11 @@ static_assert(
// obtaining a relative quantity
//////////////////////////////////
static_assert(quantity_point{42 * m}.quantity_from_zero() == 42 * m);
static_assert(quantity_point{isq::height(42 * m)}.quantity_from_zero() == 42 * m);
static_assert(quantity_point{20 * deg_C}.quantity_from_zero() == 20 * deg_C);
static_assert(quantity_point{20. * deg_C}.in(deg_F).quantity_from_zero() == 68 * deg_F);
static_assert((mean_sea_level + 42 * m).quantity_from(mean_sea_level) == 42 * m);
static_assert((mean_sea_level + isq::height(42 * m)).quantity_from(mean_sea_level) == 42 * m);
@@ -669,17 +862,43 @@ static_assert(invalid_unit_conversion<quantity_point>);
// CTAD
/////////
static_assert(std::is_same_v<decltype(quantity_point{123 * m})::rep, int>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{123 * m}.point_origin)>,
implicit_zeroth_point_origin_<kind_of<isq::length>>>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{123 * m}.absolute_point_origin)>,
implicit_zeroth_point_origin_<kind_of<isq::length>>>);
static_assert(quantity_point{123 * m}.unit == si::metre);
static_assert(quantity_point{123 * m}.quantity_spec == kind_of<isq::length>);
static_assert(std::is_same_v<decltype(quantity_point{isq::height(123 * m)})::rep, int>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{isq::height(123 * m)}.point_origin)>,
implicit_zeroth_point_origin_<isq::height>>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{isq::height(123 * m)}.absolute_point_origin)>,
implicit_zeroth_point_origin_<isq::height>>);
static_assert(quantity_point{isq::height(123 * m)}.unit == si::metre);
static_assert(quantity_point{isq::height(123 * m)}.quantity_spec == isq::height);
static_assert(std::is_same_v<decltype(quantity_point{20 * deg_C})::rep, int>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{20 * deg_C}.point_origin)>,
struct si::zeroth_degree_Celsius>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{20 * deg_C}.absolute_point_origin)>,
struct si::zeroth_kelvin>);
static_assert(quantity_point{20 * deg_C}.unit == si::degree_Celsius);
static_assert(quantity_point{20 * deg_C}.quantity_spec == kind_of<isq::thermodynamic_temperature>);
using namespace std::chrono_literals;
static_assert(std::is_same_v<decltype(quantity_point{sys_seconds{123s}})::rep, std::chrono::seconds::rep>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{sys_seconds{123s}}.point_origin)>,
chrono_point_origin_<std::chrono::system_clock>>);
static_assert(std::is_same_v<std::remove_const_t<decltype(quantity_point{sys_seconds{123s}}.absolute_point_origin)>,
chrono_point_origin_<std::chrono::system_clock>>);
static_assert(quantity_point{sys_seconds{24h}}.unit == si::second);
static_assert(quantity_point{sys_seconds{24h}}.quantity_spec == kind_of<isq::time>);
// ////////////
// // getters
// ////////////
////////////
// getters
////////////
constexpr quantity_point mean_sea_level_qp = mean_sea_level + 1 * m;
constexpr quantity_point my_mean_sea_level_qp = my_mean_sea_level + 1 * m;
@@ -808,12 +1027,39 @@ concept invalid_binary_operations = requires {
requires !requires { isq::length(1 * m) + QP<si::metre, mean_sea_level, int>(1 * m); };
requires !requires { QP<isq::height[m], mean_sea_level, int>(1 * m) + isq::length(1 * m); };
requires !requires { isq::length(1 * m) + QP<isq::height[m], mean_sea_level, int>(1 * m); };
requires !requires { QP<si::metre, implicit_zeroth_point_origin<isq::height>, int>(1 * m) + isq::length(1 * m); };
requires !requires { isq::length(1 * m) + QP<si::metre, implicit_zeroth_point_origin<isq::height>, int>(1 * m); };
requires !requires {
QP<isq::height[m], implicit_zeroth_point_origin<isq::height>, int>(1 * m) + isq::length(1 * m);
};
requires !requires {
isq::length(1 * m) + QP<isq::height[m], implicit_zeroth_point_origin<isq::height>, int>(1 * m);
};
requires !requires { Origin + isq::length(1 * m); };
requires !requires { isq::length(1 * m) + Origin; };
// can't subtract more generic quantity (violates point_origin quantity_spec)
requires !requires { QP<si::metre, mean_sea_level, int>(1 * m) - isq::length(1 * m); };
requires !requires { QP<isq::height[m], mean_sea_level, int>(1 * m) - isq::length(1 * m); };
requires !requires { QP<si::metre, implicit_zeroth_point_origin<isq::height>, int>(1 * m) - isq::length(1 * m); };
requires !requires {
QP<isq::height[m], implicit_zeroth_point_origin<isq::height>, int>(1 * m) - isq::length(1 * m);
};
requires !requires {
QP<isq::height[m] / isq::time[s], implicit_zeroth_point_origin<isq::height / isq::time>, int>(10 * isq::height[m] /
(2 * isq::time[s])) +
5 * isq::speed[m / s];
};
requires !requires {
5 * isq::speed[m / s] +
QP<isq::height[m] / isq::time[s], implicit_zeroth_point_origin<isq::height / isq::time>, int>(
10 * isq::height[m] / (2 * isq::time[s]));
};
requires !requires {
QP<isq::height[m] / isq::time[s], implicit_zeroth_point_origin<isq::height / isq::time>, int>(10 * isq::height[m] /
(2 * isq::time[s])) -
5 * isq::speed[m / s];
};
requires !requires { Origin - isq::length(1 * m); };
// quantity point can't be subtracted from a quantity
@@ -835,6 +1081,28 @@ concept invalid_binary_operations = requires {
};
requires !requires { mean_sea_level - QP<isq::height[m], other_absolute_level, int>(1 * m); };
requires !requires { QP<isq::height[m], mean_sea_level, int>(1 * m) - other_absolute_level; };
requires !requires { QP<isq::height[m], mean_sea_level, int>(1 * m) - quantity_point{1 * m}; };
requires !requires { quantity_point{1 * m} - QP<isq::height[m], mean_sea_level, int>(1 * m); };
requires !requires {
QP<isq::width[m], implicit_zeroth_point_origin<isq::width>, int>(1 * m) - quantity_point{isq::height(1 * m)};
};
requires !requires {
quantity_point{isq::height(1 * m)} - QP<isq::width[m], implicit_zeroth_point_origin<isq::width>, int>(1 * m);
};
requires !requires {
QP<isq::width[m], implicit_zeroth_point_origin<isq::width>, int>(1 * m) - quantity_point{isq::length(1 * m)};
};
requires !requires {
quantity_point{isq::length(1 * m)} - QP<isq::width[m], implicit_zeroth_point_origin<isq::width>, int>(1 * m);
};
requires !requires {
quantity_point{10 * isq::height[m] / (2 * isq::time[s])} -
QP<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>(5 * isq::speed[m / s]);
};
requires !requires {
QP<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>(5 * isq::speed[m / s]) -
quantity_point{10 * isq::height[m] / (2 * isq::time[s])};
};
// cant'subtract two unrelated points
requires !requires { Origin - OtherOrigin; };
@@ -1260,6 +1528,51 @@ static_assert(
is_of_type<(zero_m_per_s + 10 * isq::height[m] / (2 * isq::time[s])) + (10 * isq::height[m] / (2 * isq::time[s])),
quantity_point<(isq::height / isq::time)[m / s], zero_m_per_s, int>>);
static_assert((quantity_point{5 * isq::speed[m / s]} + 10 * isq::length[m] / (2 * isq::time[s])).quantity_from_zero() ==
10 * isq::speed[m / s]);
static_assert((10 * isq::length[m] / (2 * isq::time[s]) + quantity_point{5 * isq::speed[m / s]}).quantity_from_zero() ==
10 * isq::speed[m / s]);
static_assert((quantity_point{5 * isq::speed[m / s]} - 10 * isq::length[m] / (2 * isq::time[s])).quantity_from_zero() ==
0 * isq::speed[m / s]);
static_assert((quantity_point{10 * isq::length[m] / (2 * isq::time[s])} + 5 * isq::speed[m / s]).quantity_from_zero() ==
10 * isq::speed[m / s]);
static_assert((5 * isq::speed[m / s] + quantity_point{10 * isq::length[m] / (2 * isq::time[s])}).quantity_from_zero() ==
10 * isq::speed[m / s]);
static_assert((quantity_point{10 * isq::length[m] / (2 * isq::time[s])} - 5 * isq::speed[m / s]).quantity_from_zero() ==
0 * isq::speed[m / s]);
static_assert((quantity_point{5 * isq::speed[m / s]} + 10 * isq::height[m] / (2 * isq::time[s])).quantity_from_zero() ==
10 * isq::speed[m / s]);
static_assert((10 * isq::height[m] / (2 * isq::time[s]) + quantity_point{5 * isq::speed[m / s]}).quantity_from_zero() ==
10 * isq::speed[m / s]);
static_assert((quantity_point{5 * isq::speed[m / s]} - 10 * isq::height[m] / (2 * isq::time[s])).quantity_from_zero() ==
0 * isq::speed[m / s]);
static_assert(is_of_type<quantity_point{10 * isq::length[m] / (2 * isq::time[s])} + 5 * isq::speed[m / s],
quantity_point<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>>);
static_assert(is_of_type<10 * isq::height[m] / (2 * isq::time[s]) + quantity_point{5 * isq::speed[m / s]},
quantity_point<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>>);
static_assert(is_of_type<quantity_point{5 * isq::speed[m / s]} + 10 * isq::height[m] / (2 * isq::time[s]),
quantity_point<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>>);
static_assert(is_of_type<5 * isq::speed[m / s] + quantity_point{10 * isq::length[m] / (2 * isq::time[s])},
quantity_point<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>>);
static_assert(is_of_type<quantity_point{10 * isq::length[m] / (2 * isq::time[s])} - 5 * isq::speed[m / s],
quantity_point<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>>);
static_assert(is_of_type<quantity_point{5 * isq::speed[m / s]} - 10 * isq::height[m] / (2 * isq::time[s]),
quantity_point<isq::speed[m / s], implicit_zeroth_point_origin<isq::speed>, int>>);
static_assert(
is_of_type<quantity_point{10 * isq::length[m] / (2 * isq::time[s])} - quantity_point{5 * isq::speed[m / s]},
quantity<isq::speed[m / s], int>>);
static_assert(
is_of_type<quantity_point{5 * isq::speed[m / s]} - quantity_point{10 * isq::length[m] / (2 * isq::time[s])},
quantity<isq::speed[m / s], int>>);
static_assert(
is_of_type<
quantity_point{10 * isq::height[m] / (2 * isq::time[s])} + (10 * isq::height[m] / (2 * isq::time[s])),
quantity_point<(isq::height / isq::time)[m / s], implicit_zeroth_point_origin<isq::height / isq::time>, int>>);
inline constexpr struct zero_Hz : absolute_point_origin<zero_Hz, kind_of<isq::frequency>> {
} zero_Hz;
@@ -1297,6 +1610,40 @@ static_assert(is_of_type<(zero_Hz + 10 / (2 * isq::period_duration[s])) - (zero_
static_assert(is_of_type<(zero_Hz + 5 * isq::frequency[Hz]) - (zero_Hz + 10 / (2 * isq::period_duration[s])),
quantity<isq::frequency[Hz], int>>);
static_assert((quantity_point{10 / (2 * isq::period_duration[s])} + 5 * isq::frequency[Hz]).quantity_from_zero() ==
10 * isq::frequency[Hz]);
static_assert((10 / (2 * isq::period_duration[s]) + quantity_point{zero_Hz + 5 * isq::frequency[Hz]})
.quantity_from_zero() == 10 * isq::frequency[Hz]);
static_assert((quantity_point{5 * isq::frequency[Hz]} + 10 / (2 * isq::period_duration[s])).quantity_from_zero() ==
10 * isq::frequency[Hz]);
static_assert((5 * isq::frequency[Hz] + quantity_point{10 / (2 * isq::period_duration[s])}).quantity_from_zero() ==
10 * isq::frequency[Hz]);
static_assert((quantity_point{10 / (2 * isq::period_duration[s])} - 5 * isq::frequency[Hz]).quantity_from_zero() ==
0 * isq::frequency[Hz]);
static_assert((quantity_point{5 * isq::frequency[Hz]} - 10 / (2 * isq::period_duration[s])).quantity_from_zero() ==
0 * isq::frequency[Hz]);
static_assert(quantity_point{10 / (2 * isq::period_duration[s])} - quantity_point{5 * isq::frequency[Hz]} ==
0 * isq::frequency[Hz]);
static_assert(quantity_point{5 * isq::frequency[Hz]} - quantity_point{10 / (2 * isq::period_duration[s])} ==
0 * isq::frequency[Hz]);
static_assert(is_of_type<quantity_point{10 / (2 * isq::period_duration[s])} + 5 * isq::frequency[Hz],
quantity_point<isq::frequency[Hz], implicit_zeroth_point_origin<isq::frequency>, int>>);
static_assert(is_of_type<10 / (2 * isq::period_duration[s]) + quantity_point{5 * isq::frequency[Hz]},
quantity_point<isq::frequency[Hz], implicit_zeroth_point_origin<isq::frequency>, int>>);
static_assert(is_of_type<quantity_point{5 * isq::frequency[Hz]} + 10 / (2 * isq::period_duration[s]),
quantity_point<isq::frequency[Hz], implicit_zeroth_point_origin<isq::frequency>, int>>);
static_assert(is_of_type<5 * isq::frequency[Hz] + quantity_point{10 / (2 * isq::period_duration[s])},
quantity_point<isq::frequency[Hz], implicit_zeroth_point_origin<isq::frequency>, int>>);
static_assert(is_of_type<quantity_point{10 / (2 * isq::period_duration[s])} - 5 * isq::frequency[Hz],
quantity_point<isq::frequency[Hz], implicit_zeroth_point_origin<isq::frequency>, int>>);
static_assert(is_of_type<quantity_point{5 * isq::frequency[Hz]} - 10 / (2 * isq::period_duration[s]),
quantity_point<isq::frequency[Hz], implicit_zeroth_point_origin<isq::frequency>, int>>);
static_assert(is_of_type<quantity_point{10 / (2 * isq::period_duration[s])} - quantity_point{5 * isq::frequency[Hz]},
quantity<isq::frequency[Hz], int>>);
static_assert(is_of_type<quantity_point{5 * isq::frequency[Hz]} - quantity_point{10 / (2 * isq::period_duration[s])},
quantity<isq::frequency[Hz], int>>);
// Different named dimensions
template<typename... Ts>
consteval bool invalid_addition(Ts... ts)
@@ -1323,4 +1670,16 @@ static_assert(invalid_addition(5 * isq::activity[Bq], zero_Hz + 10 / (2 * isq::t
static_assert(invalid_addition(5 * isq::activity[Bq], 10 / (2 * isq::time[s]), zero_Hz + 5 * isq::frequency[Hz]));
static_assert(invalid_subtraction(zero_Bq + 5 * isq::activity[Bq], 10 / (2 * isq::time[s]), 5 * isq::frequency[Hz]));
static_assert(invalid_addition(quantity_point{5 * isq::activity[Bq]}, 5 * isq::frequency[Hz]));
static_assert(invalid_addition(5 * isq::activity[Bq], quantity_point{5 * isq::frequency[Hz]}));
static_assert(invalid_subtraction(quantity_point{5 * isq::activity[Bq]}, 5 * isq::frequency[Hz]));
static_assert(invalid_subtraction(quantity_point{5 * isq::activity[Bq]}, quantity_point{5 * isq::frequency[Hz]}));
static_assert(invalid_addition(quantity_point{5 * isq::activity[Bq]}, 10 / (2 * isq::time[s]), 5 * isq::frequency[Hz]));
static_assert(invalid_addition(5 * isq::activity[Bq], quantity_point{10 / (2 * isq::time[s])}, 5 * isq::frequency[Hz]));
static_assert(invalid_addition(5 * isq::activity[Bq], 10 / (2 * isq::time[s]), quantity_point{5 * isq::frequency[Hz]}));
static_assert(invalid_subtraction(quantity_point{5 * isq::activity[Bq]}, 10 / (2 * isq::time[s]),
5 * isq::frequency[Hz]));
} // namespace