From fbd1393858719c7bda7d251f742950c1bc691ea8 Mon Sep 17 00:00:00 2001 From: Kohei Takahashi Date: Wed, 6 Jan 2016 19:39:55 +0900 Subject: [PATCH] Qualify std:: for isnan in some situation. Because isnan is implemented as a macro and libstdc++ undef it within (at least FreeBSD 10). Backported from fbd1393858719c7bda7d251f742950c1bc691ea8 [Jörg Krause: adjust pathes to match sourceforge release tarball] Signed-off-by: Jörg Krause --- boost/math/special_functions/fpclassify.hpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/boost/math/special_functions/fpclassify.hpp b/boost/math/special_functions/fpclassify.hpp index 58fad13..d83e111 100644 --- a/boost/math/special_functions/fpclassify.hpp +++ b/boost/math/special_functions/fpclassify.hpp @@ -133,6 +133,10 @@ inline bool is_nan_helper(T, const boost::false_type&) #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(f)); } +inline bool is_nan_helper(__float128 f, const boost::false_type&) { return std::isnan(static_cast(f)); } #else inline bool is_nan_helper(__float128 f, const boost::true_type&) { return ::isnan(static_cast(f)); } inline bool is_nan_helper(__float128 f, const boost::false_type&) { return ::isnan(static_cast(f)); }