36 lines
731 B
C++
36 lines
731 B
C++
// -*-c++-*-
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// vim: set ft=cpp:
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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include <algorithm> // IWYU pragma: export
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#include <cassert>
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namespace cm {
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#if __cplusplus >= 201703L || defined(_MSVC_LANG) && _MSVC_LANG >= 201703L
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using std::clamp;
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#else
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template <typename T>
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T const& clamp(T const& v, T const& lo, T const& hi)
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{
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assert(!(hi < lo));
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return (v < lo) ? lo : (hi < v) ? hi : v;
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}
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template <typename T, typename Comp>
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T const& clamp(T const& v, T const& lo, T const& hi, Comp comp)
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{
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assert(!comp(hi, lo));
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return comp(v, lo) ? lo : comp(hi, v) ? hi : v;
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}
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#endif
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} // namespace cm
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