diff options
Diffstat (limited to 'boost/math/special_functions/fpclassify.hpp')
| -rw-r--r-- | boost/math/special_functions/fpclassify.hpp | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/boost/math/special_functions/fpclassify.hpp b/boost/math/special_functions/fpclassify.hpp index 0a4e1ac7aa..d83e111c48 100644 --- a/boost/math/special_functions/fpclassify.hpp +++ b/boost/math/special_functions/fpclassify.hpp @@ -81,7 +81,12 @@ is used. #include <float.h> #endif #ifdef BOOST_MATH_USE_FLOAT128 +#ifdef __has_include +#if __has_include("quadmath.h") #include "quadmath.h" +#define BOOST_MATH_HAS_QUADMATH_H +#endif +#endif #endif #ifdef BOOST_NO_STDC_NAMESPACE @@ -124,9 +129,18 @@ inline bool is_nan_helper(T, const boost::false_type&) { return false; } -#ifdef BOOST_MATH_USE_FLOAT128 +#if defined(BOOST_MATH_USE_FLOAT128) +#if defined(BOOST_MATH_HAS_QUADMATH_H) inline bool is_nan_helper(__float128 f, const boost::true_type&) { return ::isnanq(f); } inline bool is_nan_helper(__float128 f, const boost::false_type&) { return ::isnanq(f); } +#elif defined(BOOST_GNU_STDLIB) && BOOST_GNU_STDLIB && \ + _GLIBCXX_USE_C99_MATH && !_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC +inline bool is_nan_helper(__float128 f, const boost::true_type&) { return std::isnan(static_cast<double>(f)); } +inline bool is_nan_helper(__float128 f, const boost::false_type&) { return std::isnan(static_cast<double>(f)); } +#else +inline bool is_nan_helper(__float128 f, const boost::true_type&) { return ::isnan(static_cast<double>(f)); } +inline bool is_nan_helper(__float128 f, const boost::false_type&) { return ::isnan(static_cast<double>(f)); } +#endif #endif } @@ -519,7 +533,7 @@ inline bool (isinf)(long double x) return detail::isinf_impl(static_cast<value_type>(x), method()); } #endif -#ifdef BOOST_MATH_USE_FLOAT128 +#if defined(BOOST_MATH_USE_FLOAT128) && defined(BOOST_MATH_HAS_QUADMATH_H) template<> inline bool (isinf)(__float128 x) { @@ -611,7 +625,7 @@ inline bool (isnan)(long double x) return detail::isnan_impl(x, method()); } #endif -#ifdef BOOST_MATH_USE_FLOAT128 +#if defined(BOOST_MATH_USE_FLOAT128) && defined(BOOST_MATH_HAS_QUADMATH_H) template<> inline bool (isnan)(__float128 x) { |