640b75c8d7
Add patch from upstream [1] to fix build error:
./boost/math/special_functions/fpclassify.hpp:137:75: error: '::isnan' has not been declared
Fixes:
http://autobuild.buildroot.net/results/6c7/6c72c189cd029fb6c81798f5443fab331358bb90/
http://autobuild.buildroot.net/results/b70/b709fc201c9df8f76163e2a620da32362abe5288/
http://autobuild.buildroot.net/results/99b/99bdbc5622dfd0ac369611ec07dd2a8a8fe41ce8/
http://autobuild.buildroot.net/results/d2b/d2b270787fc20e45c839d5670af55e47723aef2a/
and many more.
Backported from: fbd1393858719c7bda7d251f742950c1bc691ea8
[1] fbd1393858
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
33 lines
1.7 KiB
Diff
33 lines
1.7 KiB
Diff
From fbd1393858719c7bda7d251f742950c1bc691ea8 Mon Sep 17 00:00:00 2001
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From: Kohei Takahashi <flast@flast.jp>
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Date: Wed, 6 Jan 2016 19:39:55 +0900
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Subject: [PATCH] Qualify std:: for isnan in some situation.
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Because isnan is implemented as a macro and libstdc++ undef it within
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<cmath> (at least FreeBSD 10).
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Backported from fbd1393858719c7bda7d251f742950c1bc691ea8
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[Jörg Krause: adjust pathes to match sourceforge release tarball]
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Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
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---
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boost/math/special_functions/fpclassify.hpp | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/boost/math/special_functions/fpclassify.hpp b/boost/math/special_functions/fpclassify.hpp
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index 58fad13..d83e111 100644
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--- a/boost/math/special_functions/fpclassify.hpp
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+++ b/boost/math/special_functions/fpclassify.hpp
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@@ -133,6 +133,10 @@ inline bool is_nan_helper(T, const boost::false_type&)
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#if defined(BOOST_MATH_HAS_QUADMATH_H)
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inline bool is_nan_helper(__float128 f, const boost::true_type&) { return ::isnanq(f); }
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inline bool is_nan_helper(__float128 f, const boost::false_type&) { return ::isnanq(f); }
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+#elif defined(BOOST_GNU_STDLIB) && BOOST_GNU_STDLIB && \
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+ _GLIBCXX_USE_C99_MATH && !_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC
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+inline bool is_nan_helper(__float128 f, const boost::true_type&) { return std::isnan(static_cast<double>(f)); }
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+inline bool is_nan_helper(__float128 f, const boost::false_type&) { return std::isnan(static_cast<double>(f)); }
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#else
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inline bool is_nan_helper(__float128 f, const boost::true_type&) { return ::isnan(static_cast<double>(f)); }
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inline bool is_nan_helper(__float128 f, const boost::false_type&) { return ::isnan(static_cast<double>(f)); }
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