28 lines
759 B
C++
28 lines
759 B
C++
// 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 BASE_NUMERICS_RANGES_H_
|
|
#define BASE_NUMERICS_RANGES_H_
|
|
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
|
|
namespace base {
|
|
|
|
// 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 base
|
|
|
|
#endif // BASE_NUMERICS_RANGES_H_
|