| From fbd1393858719c7bda7d251f742950c1bc691ea8 Mon Sep 17 00:00:00 2001 |
| From: Kohei Takahashi <flast@flast.jp> |
| 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 |
| <cmath> (at least FreeBSD 10). |
| |
| Backported from fbd1393858719c7bda7d251f742950c1bc691ea8 |
| |
| [Jörg Krause: adjust pathes to match sourceforge release tarball] |
| Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks> |
| |
| --- |
| 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<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)); } |
