| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SAFEMATH_RANGES_H_ |
| #define SAFEMATH_RANGES_H_ |
| |
| #include <math.h> |
| #include <algorithm> |
| |
| namespace safemath { |
| |
| // To be replaced with std::clamp() from C++17, someday. |
| template <class T> |
| constexpr const T& ClampToRange(const T& value, const T& min, const T& max) { |
| return std::min(std::max(value, min), max); |
| } |
| |
| template <typename T> |
| constexpr bool IsApproximatelyEqual(T lhs, T rhs, T tolerance) { |
| static_assert(std::is_arithmetic<T>::value, "Argument must be arithmetic"); |
| return std::abs(rhs - lhs) <= tolerance; |
| } |
| |
| } // namespace safemath |
| |
| #endif // SAFEMATH_RANGES_H_ |
