feat: angular acceleration support added

src/systems/isq/CMakeLists.txt

@@ -28,6 +28,7 @@ add_units_module(
     HEADERS include/units/isq/dimensions/absorbed_dose.h
             include/units/isq/dimensions/acceleration.h
             include/units/isq/dimensions/amount_of_substance.h
+            include/units/isq/dimensions/angular_acceleration.h
             include/units/isq/dimensions/angular_velocity.h
             include/units/isq/dimensions/area.h
             include/units/isq/dimensions/capacitance.h

src/systems/isq/include/units/isq/dimensions.h

@@ -26,6 +26,7 @@
 #include <units/isq/dimensions/absorbed_dose.h>
 #include <units/isq/dimensions/acceleration.h>
 #include <units/isq/dimensions/amount_of_substance.h>
+#include <units/isq/dimensions/angular_acceleration.h>
 #include <units/isq/dimensions/angular_velocity.h>
 #include <units/isq/dimensions/area.h>
 #include <units/isq/dimensions/capacitance.h>

src/systems/isq/include/units/isq/dimensions/angular_acceleration.h

@@ -0,0 +1,40 @@
+// 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.
+
+#pragma once
+
+#include <units/concepts.h>
+#include <units/generic/angle.h>
+#include <units/isq/dimensions/time.h>
+
+namespace units::isq {
+
+template<typename Child, Unit U, typename...>
+struct dim_angular_acceleration;
+
+template<typename Child, Unit U, DimensionOfT<dim_angle> A, DimensionOfT<dim_time> T>
+struct dim_angular_acceleration<Child, U, A, T> : derived_dimension<Child, U, exponent<A, 1>, exponent<T, -2>> {};
+
+template<typename T>
+concept AngularAcceleration = QuantityOfT<T, dim_angular_acceleration>;
+
+}  // namespace units::isq

src/systems/si/CMakeLists.txt

@@ -28,6 +28,7 @@ add_units_module(
     HEADERS include/units/isq/si/absorbed_dose.h
             include/units/isq/si/acceleration.h
             include/units/isq/si/amount_of_substance.h
+            include/units/isq/si/angular_acceleration.h
             include/units/isq/si/angular_velocity.h
             include/units/isq/si/area.h
             include/units/isq/si/capacitance.h

src/systems/si/include/units/isq/si/angular_acceleration.h

@@ -0,0 +1,76 @@
+// 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.
+
+#pragma once
+
+// IWYU pragma: begin_exports
+#include <units/isq/dimensions/angular_acceleration.h>
+#include <units/quantity.h>
+#include <units/symbol_text.h>
+// IWYU pragma: end_exports
+
+#include <units/generic/angle.h>
+#include <units/isq/si/prefixes.h>
+#include <units/isq/si/time.h>
+#include <units/unit.h>
+
+namespace units::isq::si {
+
+struct radian_per_second_sq : derived_unit<radian_per_second_sq> {};
+
+struct dim_angular_acceleration :
+    isq::dim_angular_acceleration<dim_angular_acceleration, radian_per_second_sq, dim_angle<>, dim_time> {};
+
+template<UnitOf<dim_angular_acceleration> U, Representation Rep = double>
+using angular_acceleration = quantity<dim_angular_acceleration, U, Rep>;
+
+#ifndef UNITS_NO_LITERALS
+
+inline namespace literals {
+
+// rad/s2
+constexpr auto operator"" _q_rad_per_s2(unsigned long long l)
+{
+  gsl_ExpectsAudit(std::in_range<std::int64_t>(l));
+  return angular_acceleration<radian_per_second_sq, std::int64_t>(static_cast<std::int64_t>(l));
+}
+constexpr auto operator"" _q_rad_per_s2(long double l)
+{
+  return angular_acceleration<radian_per_second_sq, long double>(l);
+}
+
+}  // namespace literals
+
+#endif  // UNITS_NO_LITERALS
+
+}  // namespace units::isq::si
+
+#ifndef UNITS_NO_ALIASES
+
+namespace units::aliases::isq::si::inline angular_acceleration {
+
+template<Representation Rep = double>
+using rad_per_s2 = units::isq::si::angular_acceleration<units::isq::si::radian_per_second_sq, Rep>;
+
+}  // namespace units::aliases::isq::si::inline angular_acceleration
+
+#endif  // UNITS_NO_ALIASES

src/systems/si/include/units/isq/si/si.h

@@ -26,6 +26,7 @@
 #include <units/isq/si/absorbed_dose.h>
 #include <units/isq/si/acceleration.h>
 #include <units/isq/si/amount_of_substance.h>
+#include <units/isq/si/angular_acceleration.h>
 #include <units/isq/si/angular_velocity.h>
 #include <units/isq/si/area.h>
 #include <units/isq/si/capacitance.h>

test/unit_test/static/si_test.cpp

@@ -404,4 +404,10 @@ static_assert(detail::unit_text<dim_molar_energy, joule_per_mole>() == "J/mol");
 static_assert(1_q_rad / 1_q_s == 1_q_rad_per_s);
 static_assert(detail::unit_text<dim_angular_velocity, radian_per_second>() == "rad/s");
 
+// angular acceleration
+
+static_assert(1_q_rad_per_s / 1_q_s == 1_q_rad_per_s2);
+static_assert(detail::unit_text<dim_angular_acceleration, radian_per_second_sq>() ==
+              basic_symbol_text("rad/s²", "rad/s^2"));
+
 }  // namespace