| /* |
| * 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<int64>(numerator_) * other.denominator_ == |
| static_cast<int64>(denominator_) * other.numerator_; |
| } |
| |
| bool operator>(const Rational& other) const { |
| return static_cast<int64>(numerator_) * other.denominator_ > |
| static_cast<int64>(denominator_) * other.numerator_; |
| } |
| |
| bool operator>=(const Rational& other) const { |
| return static_cast<int64>(numerator_) * other.denominator_ >= |
| static_cast<int64>(denominator_) * other.numerator_; |
| } |
| |
| bool operator<(const Rational& other) const { |
| return static_cast<int64>(numerator_) * other.denominator_ < |
| static_cast<int64>(denominator_) * other.numerator_; |
| } |
| |
| bool operator<=(const Rational& other) const { |
| return static_cast<int64>(numerator_) * other.denominator_ <= |
| static_cast<int64>(denominator_) * other.numerator_; |
| } |
| |
| private: |
| int numerator_; |
| int denominator_; |
| }; |
| |
| } // namespace math |
| } // namespace cobalt |
| |
| #endif // COBALT_MATH_RATIONAL_H_ |