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