54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
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//---------------------------------------------------------------------------//
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// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_DETAIL_LITERAL_HPP
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#define BOOST_COMPUTE_DETAIL_LITERAL_HPP
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#include <iomanip>
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#include <limits>
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#include <sstream>
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#include <boost/type_traits/is_same.hpp>
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#include <boost/compute/types/fundamental.hpp>
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namespace boost {
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namespace compute {
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namespace detail {
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template<class T>
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std::string make_literal(T x)
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{
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std::stringstream s;
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s << std::setprecision(
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#ifndef BOOST_NO_CXX11_NUMERIC_LIMITS
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std::numeric_limits<T>::max_digits10
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#else
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// We don't have max_digits10, so add 3 other digits (this is what is required for
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// float, and is one more than required for double).
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3 + std::numeric_limits<T>::digits10
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#endif
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)
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<< std::scientific
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<< x;
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if(boost::is_same<T, float>::value || boost::is_same<T, float_>::value){
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s << "f";
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}
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return s.str();
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}
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} // end detail namespace
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_DETAIL_LITERAL_HPP
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