refactor: modules support redesigned

test/static/hep_test.cpp

@@ -0,0 +1,51 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2021 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.
+
+#ifdef MP_UNITS_MODULES
+import mp_units;
+#else
+#include <mp-units/systems/hep/hep.h>
+#include <mp-units/systems/isq/mechanics.h>
+#include <mp-units/systems/isq/space_and_time.h>
+#include <mp-units/systems/si/si.h>
+#endif
+
+template<class T>
+  requires mp_units::is_scalar<T>
+inline constexpr bool mp_units::is_vector<T> = true;
+
+namespace {
+
+using namespace mp_units;
+using namespace mp_units::hep::unit_symbols;
+using namespace mp_units::si::unit_symbols;
+
+// mass
+static_assert(isq::mass(1'000 * eV / c2) == isq::mass(1 * keV / c2));
+
+// momentum
+static_assert(isq::momentum(1'000'000 * eV / c) == isq::momentum(1 * MeV / c));
+
+// area
+static_assert(isq::area(1e28 * b) == isq::area(1. * m2));
+
+}  // namespace