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bug #1008: improve handling of fast-math mode for older gcc versions.

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This commit is contained in:
Gael Guennebaud 2015-10-27 16:43:23 +01:00
parent 2475a1de48
commit e3031d7bfa
1 changed files with 15 additions and 12 deletions
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27
Eigen/src/Core/MathFunctions.h
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@ -819,7 +819,7 @@ inline EIGEN_MATHFUNC_RETVAL(pow, Scalar) pow(const Scalar& x, const Scalar& y)
}
// std::is* do not work with fast-math and gcc
#if EIGEN_HAS_CXX11_MATH && !(EIGEN_COMP_GNUC_STRICT && defined __FAST_MATH__)
#if EIGEN_HAS_CXX11_MATH && !(EIGEN_COMP_GNUC_STRICT && __FINITE_MATH_ONLY__)
#define EIGEN_USE_STD_FPCLASSIFY 1
#else
#define EIGEN_USE_STD_FPCLASSIFY 0
@ -870,14 +870,18 @@ template<> EIGEN_DEVICE_FUNC bool (isnan)(const long double& x) { return _isnan(
template<> EIGEN_DEVICE_FUNC bool (isnan)(const double& x) { return _isnan(x); }
template<> EIGEN_DEVICE_FUNC bool (isnan)(const float& x) { return _isnan(double(x)); }
#elif defined __FAST_MATH__
#elif (defined __FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__)
#if EIGEN_COMP_CLANG
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC __attribute__((optnone))
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC __attribute__((optnone))
#elif EIGEN_COMP_GNUC
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC __attribute__((optimize("no-fast-math")))
#if EIGEN_GNUC_AT_LEAST(5,0)
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC __attribute__((optimize("no-finite-math-only")))
#else
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC __attribute__((noinline,optimize("no-finite-math-only")))
#endif
#else
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC
#define EIGEN_TMP_NOOPT_ATTRIB EIGEN_DEVICE_FUNC
#endif
template<typename T>
@ -887,14 +891,13 @@ bool isinf_helper(const T& x)
return x>NumTraits<T>::highest() || x<NumTraits<T>::lowest();
}
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isnan)(const long double& x) { return !(x <= std::numeric_limits<long double>::infinity()); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isnan)(const double& x) { return x!=x; }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isnan)(const float& x) { return x!=x; }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isinf)(const double& x) { return isinf_helper(x); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isinf)(const float& x) { return isinf_helper(x); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isnan)(const long double& x) { return __builtin_isnan(x); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isnan)(const double& x) { return __builtin_isnan(x); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isnan)(const float& x) { return __builtin_isnan(x); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isinf)(const double& x) { return __builtin_isinf(x); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isinf)(const float& x) { return __builtin_isinf(x); }
#if EIGEN_COMP_CLANG
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isinf)(const long double& x) { return isinf(double(x)); }
template<> EIGEN_TMP_NOOPT_ATTRIB bool (isinf)(const long double& x) { return __builtin_isinf(double(x)); }
#endif
#undef EIGEN_TMP_NOOPT_ATTRIB