585da50d7d
This PR adds the code of Boost.Math as of version 1.89 into the third-party directory, as discussed in a recent RFC [1]. The goal is for this code to be used as a back-end for the C++17 Math Special Functions. As explained in third-paty/README.md, this code is cleared for usage inside libc++ for the Math Special functions, however the LLVM Foundation should be consulted before using this code anywhere else in the LLVM project, due to the fact that it is under the Boost Software License (as opposed to the usual LLVM license). See the RFC [1] for more details. [1]: https://discourse.llvm.org/t/rfc-libc-taking-a-dependency-on-boost-math-for-the-c-17-math-special-functions
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
// Copyright (c) 2006-7 John Maddock
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_MATH_TOOLS_WORHAROUND_HPP
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#define BOOST_MATH_TOOLS_WORHAROUND_HPP
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#ifdef _MSC_VER
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#pragma once
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#endif
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#if (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
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# include <math.h>
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#endif
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#include <boost/math/tools/config.hpp>
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namespace boost{ namespace math{ namespace tools{
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//
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// We call this short forwarding function so that we can work around a bug
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// on Darwin that causes std::fmod to return a NaN. The test case is:
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// std::fmod(1185.0L, 1.5L);
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//
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template <class T>
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BOOST_MATH_GPU_ENABLED inline T fmod_workaround(T a, T b) BOOST_MATH_NOEXCEPT(T)
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{
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BOOST_MATH_STD_USING
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return fmod(a, b);
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}
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#if (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)) && ((LDBL_MANT_DIG == 106) || (__LDBL_MANT_DIG__ == 106))
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template <>
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inline long double fmod_workaround(long double a, long double b) noexcept
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{
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return ::fmodl(a, b);
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}
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#endif
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}}} // namespaces
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#endif // BOOST_MATH_TOOLS_WORHAROUND_HPP
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