| 1 | #ifdef __GNUC__
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| 2 | #pragma GCC system_header
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| 3 | #endif
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| 4 | /*=============================================================================
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| 5 | Copyright (c) 2001-2014 Joel de Guzman
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| 6 | Copyright (c) 2001-2011 Hartmut Kaiser
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| 7 | http://spirit.sourceforge.net/
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| 8 |
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| 9 | Distributed under the Boost Software License, Version 1.0. (See accompanying
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| 10 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 11 | =============================================================================*/
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| 12 | #if !defined(SPIRIT_SIGN_MAR_11_2009_0734PM)
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| 13 | #define SPIRIT_SIGN_MAR_11_2009_0734PM
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| 14 |
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| 15 | #include <boost/config/no_tr1/cmath.hpp>
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| 16 | #include <boost/math/special_functions/fpclassify.hpp>
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| 17 | #include <boost/math/special_functions/sign.hpp>
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| 18 |
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| 19 | namespace snps_boost_1_63_0 {} namespace boost = snps_boost_1_63_0; namespace snps_boost_1_63_0 { namespace spirit { namespace x3
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| 20 | {
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| 21 | template<typename T>
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| 22 | inline bool (signbit)(T x)
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| 23 | {
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| 24 | return (snps_boost_1_63_0::math::signbit)(x) ? true : false;
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| 25 | }
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| 26 |
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| 27 | // This routine has been taken and adapted from Johan Rade's fp_traits
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| 28 | // library
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| 29 | template<typename T>
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| 30 | inline T (changesign)(T x)
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| 31 | {
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| 32 | #if defined(BOOST_MATH_USE_STD_FPCLASSIFY) && !defined(BOOST_MATH_DISABLE_STD_FPCLASSIFY)
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| 33 | return -x;
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| 34 | #else
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| 35 | return (boost::math::changesign)(x);
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| 36 | #endif
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| 37 | }
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| 38 |
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| 39 | }}}
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| 40 |
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| 41 | #endif
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