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include/okapi/api/units/QMass.hpp

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+/*
+ * This code is a modified version of Benjamin Jurke's work in 2015. You can read his blog post
+ * here:
+ * https://benjaminjurke.com/content/articles/2015/compile-time-numerical-unit-dimension-checking/
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#pragma once
+
+#include "okapi/api/units/RQuantity.hpp"
+
+namespace okapi {
+QUANTITY_TYPE(1, 0, 0, 0, QMass)
+
+constexpr QMass kg(1.0); // SI base unit
+constexpr QMass gramme = 0.001 * kg;
+constexpr QMass tonne = 1000 * kg;
+constexpr QMass ounce = 0.028349523125 * kg;
+constexpr QMass pound = 16 * ounce;
+constexpr QMass stone = 14 * pound;
+
+inline namespace literals {
+constexpr QMass operator"" _kg(long double x) {
+  return QMass(x);
+}
+constexpr QMass operator"" _g(long double x) {
+  return static_cast<double>(x) * gramme;
+}
+constexpr QMass operator"" _t(long double x) {
+  return static_cast<double>(x) * tonne;
+}
+constexpr QMass operator"" _oz(long double x) {
+  return static_cast<double>(x) * ounce;
+}
+constexpr QMass operator"" _lb(long double x) {
+  return static_cast<double>(x) * pound;
+}
+constexpr QMass operator"" _st(long double x) {
+  return static_cast<double>(x) * stone;
+}
+constexpr QMass operator"" _kg(unsigned long long int x) {
+  return QMass(static_cast<double>(x));
+}
+constexpr QMass operator"" _g(unsigned long long int x) {
+  return static_cast<double>(x) * gramme;
+}
+constexpr QMass operator"" _t(unsigned long long int x) {
+  return static_cast<double>(x) * tonne;
+}
+constexpr QMass operator"" _oz(unsigned long long int x) {
+  return static_cast<double>(x) * ounce;
+}
+constexpr QMass operator"" _lb(unsigned long long int x) {
+  return static_cast<double>(x) * pound;
+}
+constexpr QMass operator"" _st(unsigned long long int x) {
+  return static_cast<double>(x) * stone;
+}
+} // namespace literals
+} // namespace okapi