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33 lines
670 B
C++
33 lines
670 B
C++
#pragma once
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#include <cmath>
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#include <limits>
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#include <type_traits>
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/// To be sure, that this function is zero-cost for non-floating point types.
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template <typename T>
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inline bool isNaN(T x)
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{
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return std::is_floating_point<T>::value ? std::isnan(x) : false;
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}
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template <typename T>
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inline bool isFinite(T x)
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{
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return std::is_floating_point<T>::value ? std::isfinite(x) : true;
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}
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template <typename T>
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typename std::enable_if<std::is_floating_point<T>::value, T>::type NaNOrZero()
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{
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return std::numeric_limits<T>::quiet_NaN();
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}
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template <typename T>
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typename std::enable_if<!std::is_floating_point<T>::value, T>::type NaNOrZero()
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{
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return 0;
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}
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