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Use std::isfinite when available

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This commit is contained in:
Deanna Hood 2015-04-20 14:59:57 -04:00
parent 249c48ba00
commit e5048b5501
1 changed files with 6 additions and 3 deletions
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9
Eigen/src/Core/MathFunctions.h
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@ -787,13 +787,16 @@ inline EIGEN_MATHFUNC_RETVAL(pow, Scalar) pow(const Scalar& x, const Scalar& y)
return EIGEN_MATHFUNC_IMPL(pow, Scalar)::run(x, y);
}
// std::isfinite is non standard, so let's define our own version,
// even though it is not very efficient.
template<typename T>
EIGEN_DEVICE_FUNC
bool (isfinite)(const T& x)
{
return x<NumTraits<T>::highest() && x>NumTraits<T>::lowest();
#ifdef EIGEN_HAS_C99_MATH
using std::isfinite;
return isfinite(x);
#else
return x<NumTraits<T>::highest() && x>NumTraits<T>::lowest();
#endif
}
template<typename T>