projects / ceph.git / blame
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|---|---|---|
| 7c673cae FG |
1 | //---------------------------------------------------------------------------// |
| 2 | // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com> | |
| 3 | // | |
| 4 | // Distributed under the Boost Software License, Version 1.0 | |
| 5 | // See accompanying file LICENSE_1_0.txt or copy at | |
| 6 | // http://www.boost.org/LICENSE_1_0.txt | |
| 7 | // | |
| 8 | // See http://boostorg.github.com/compute for more information. | |
| 9 | //---------------------------------------------------------------------------// | |
| 10 | ||
| 11 | #ifndef BOOST_COMPUTE_DETAIL_LITERAL_HPP | |
| 12 | #define BOOST_COMPUTE_DETAIL_LITERAL_HPP | |
| 13 | ||
| 14 | #include <iomanip> | |
| 15 | #include <limits> | |
| 16 | #include <sstream> | |
| 17 | ||
| 18 | #include <boost/type_traits/is_same.hpp> | |
| 19 | ||
| 20 | #include <boost/compute/types/fundamental.hpp> | |
| 21 | ||
| 22 | namespace boost { | |
| 23 | namespace compute { | |
| 24 | namespace detail { | |
| 25 | ||
| 26 | template<class T> | |
| 27 | std::string make_literal(T x) | |
| 28 | { | |
| 29 | std::stringstream s; | |
| 30 | s << std::setprecision( | |
| 31 | #ifndef BOOST_NO_CXX11_NUMERIC_LIMITS | |
| 32 | std::numeric_limits<T>::max_digits10 | |
| 33 | #else | |
| 34 | // We don't have max_digits10, so add 3 other digits (this is what is required for | |
| 35 | // float, and is one more than required for double). | |
| 36 | 3 + std::numeric_limits<T>::digits10 | |
| 37 | #endif | |
| 38 | ) | |
| 39 | << std::scientific | |
| 40 | << x; | |
| 41 | ||
| 42 | if(boost::is_same<T, float>::value || boost::is_same<T, float_>::value){ | |
| 43 | s << "f"; | |
| 44 | } | |
| 45 | ||
| 46 | return s.str(); | |
| 47 | } | |
| 48 | ||
| 49 | } // end detail namespace | |
| 50 | } // end compute namespace | |
| 51 | } // end boost namespace | |
| 52 | ||
| 53 | #endif // BOOST_COMPUTE_DETAIL_LITERAL_HPP |