terminal/dep/chromium/base/numerics/ranges.h
Michael Niksa 4d1c7cf3eb Introduce chromium safe math (#4144)
## Summary of the Pull Request

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
* [x] Closes #4013 
* [x] I work here.
* [x] Existing tests should be OK. Real changes, just adding a lib to use.
* [x] Couldn't find any existing docs about intsafe.
* [x] Am core contributor.

## Detailed Description of the Pull Request / Additional comments
* [x] Can we remove min/max completely or rename it in the two projects where it had to be reintroduced? This is now moved into #4152 
* [x] How many usages of the old safe math are there? **79**
* [x] If not a ton, can we migrate them here or in a follow on PR? This is now moved into #4153

Files with old safe math:
- TerminalControl: TSFInputControl.cpp
- TerminalCore: TerminalDispatch.cpp
- TerminalCore: TerminalSelection.cpp
- Host: directio.cpp
- RendererGdi: invalidate.cpp
- RendererGdi: math.cpp
- RendererGdi: paint.cpp
- RendererVt: paint.cpp
- TerminalAdapter: adaptDispatch.cpp
- Types: viewport.cpp
- Types: WindowUiaProviderBase.cpp

## Validation Steps Performed
2020-01-16 18:51:06 +00:00

28 lines
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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_