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annotate DEPENDENCIES/generic/include/boost/tr1/detail/math_overloads.hpp @ 133:4acb5d8d80b6 tip

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Don't fail environmental check if README.md exists (but .txt and no-suffix don't)
author Chris Cannam
date Tue, 30 Jul 2019 12:25:44 +0100
parents 2665513ce2d3
children
rev   line source
Chris@16 1 // (C) Copyright John Maddock 2005.
Chris@16 2 // Use, modification and distribution are subject to the
Chris@16 3 // Boost Software License, Version 1.0. (See accompanying file
Chris@16 4 // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16 5
Chris@16 6 #ifndef BOOST_TR1_MATH_OVERLOADS_HPP_INCLUDED
Chris@16 7 # define BOOST_TR1_MATH_OVERLOADS_HPP_INCLUDED
Chris@16 8 # include <boost/config.hpp>
Chris@16 9
Chris@16 10 # ifndef BOOST_NO_SFINAE
Chris@16 11 # include <boost/utility/enable_if.hpp>
Chris@16 12 # include <boost/type_traits/is_convertible.hpp>
Chris@16 13 # define BOOST_TR1_MATH_RETURN(RET) typename ::boost::enable_if< ::boost::is_convertible<T,double>, RET >::type
Chris@16 14 # else
Chris@16 15 # define BOOST_TR1_MATH_RETURN(RET) RET
Chris@16 16 # endif
Chris@16 17
Chris@16 18 # include <boost/type_traits/is_floating_point.hpp>
Chris@16 19 # include <boost/type_traits/is_same.hpp>
Chris@16 20 # include <boost/mpl/if.hpp>
Chris@16 21
Chris@16 22 namespace boost{ namespace tr1_detail{
Chris@16 23
Chris@16 24 template <class T, class U>
Chris@16 25 struct largest_real
Chris@16 26 {
Chris@16 27 typedef typename boost::mpl::if_<
Chris@16 28 boost::is_same<long double, T>,
Chris@16 29 long double,
Chris@16 30 typename boost::mpl::if_<
Chris@16 31 boost::is_same<long double, U>,
Chris@16 32 long double,
Chris@16 33 typename boost::mpl::if_<
Chris@16 34 boost::is_same<double, T>,
Chris@16 35 double,
Chris@16 36 typename boost::mpl::if_<
Chris@16 37 boost::is_same<double, U>,
Chris@16 38 double,
Chris@16 39 float
Chris@16 40 >::type
Chris@16 41 >::type
Chris@16 42 >::type
Chris@16 43 >::type type;
Chris@16 44 };
Chris@16 45
Chris@16 46 template <class T, class U>
Chris@16 47 struct promote_to_real
Chris@16 48 {
Chris@16 49 typedef typename largest_real<
Chris@16 50 typename boost::mpl::if_< boost::is_floating_point<T>, T, double>::type,
Chris@16 51 typename boost::mpl::if_< boost::is_floating_point<U>, U, double>::type
Chris@16 52 >::type type;
Chris@16 53 };
Chris@16 54
Chris@16 55 } }
Chris@16 56
Chris@16 57 #endif
Chris@16 58