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 // Copyright 2015 Google Inc. All Rights Reserved. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #ifndef COBALT_MATH_RATIONAL_H_ #define COBALT_MATH_RATIONAL_H_ namespace cobalt { namespace math { // Describes a rational number and maintains two separate integer values for the // numerator and denominator. class Rational { public: Rational(int numerator, int denominator) : numerator_(numerator), denominator_(denominator) {} int numerator() const { return numerator_; } int denominator() const { return denominator_; } bool operator==(const Rational& other) const { return static_cast(numerator_) * other.denominator_ == static_cast(denominator_) * other.numerator_; } bool operator>(const Rational& other) const { return static_cast(numerator_) * other.denominator_ > static_cast(denominator_) * other.numerator_; } bool operator>=(const Rational& other) const { return static_cast(numerator_) * other.denominator_ >= static_cast(denominator_) * other.numerator_; } bool operator<(const Rational& other) const { return static_cast(numerator_) * other.denominator_ < static_cast(denominator_) * other.numerator_; } bool operator<=(const Rational& other) const { return static_cast(numerator_) * other.denominator_ <= static_cast(denominator_) * other.numerator_; } private: int numerator_; int denominator_; }; } // namespace math } // namespace cobalt #endif // COBALT_MATH_RATIONAL_H_