| 1 | // (c) Copyright Fernando Luis Cacciola Carballal 2000-2004 |
|---|---|
| 2 | // Use, modification, and distribution is subject to the Boost Software |
| 3 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| 4 | // http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | // See library home page at http://www.boost.org/libs/numeric/conversion |
| 7 | // |
| 8 | // Contact the author at: fernando_cacciola@hotmail.com |
| 9 | // |
| 10 | #ifndef BOOST_NUMERIC_CONVERSION_BOUNDS_DETAIL_FLC_12NOV2002_HPP |
| 11 | #define BOOST_NUMERIC_CONVERSION_BOUNDS_DETAIL_FLC_12NOV2002_HPP |
| 12 | |
| 13 | #include "boost/limits.hpp" |
| 14 | #include "boost/config.hpp" |
| 15 | #include "boost/mpl/if.hpp" |
| 16 | |
| 17 | namespace boost { namespace numeric { namespace boundsdetail |
| 18 | { |
| 19 | template<class N> |
| 20 | class Integral |
| 21 | { |
| 22 | typedef std::numeric_limits<N> limits ; |
| 23 | |
| 24 | public : |
| 25 | |
| 26 | static N lowest () { return limits::min BOOST_PREVENT_MACRO_SUBSTITUTION (); } |
| 27 | static N highest () { return limits::max BOOST_PREVENT_MACRO_SUBSTITUTION (); } |
| 28 | static N smallest() { return static_cast<N>(1); } |
| 29 | } ; |
| 30 | |
| 31 | template<class N> |
| 32 | class Float |
| 33 | { |
| 34 | typedef std::numeric_limits<N> limits ; |
| 35 | |
| 36 | public : |
| 37 | |
| 38 | static N lowest () { return static_cast<N>(-limits::max BOOST_PREVENT_MACRO_SUBSTITUTION ()) ; } |
| 39 | static N highest () { return limits::max BOOST_PREVENT_MACRO_SUBSTITUTION (); } |
| 40 | static N smallest() { return limits::min BOOST_PREVENT_MACRO_SUBSTITUTION (); } |
| 41 | } ; |
| 42 | |
| 43 | template<class N> |
| 44 | struct get_impl |
| 45 | { |
| 46 | typedef mpl::bool_< ::std::numeric_limits<N>::is_integer > is_int ; |
| 47 | |
| 48 | typedef Integral<N> impl_int ; |
| 49 | typedef Float <N> impl_float ; |
| 50 | |
| 51 | typedef typename mpl::if_<is_int,impl_int,impl_float>::type type ; |
| 52 | } ; |
| 53 | |
| 54 | } } } // namespace boost::numeric::boundsdetail. |
| 55 | |
| 56 | #endif |
| 57 | // |
| 58 | /////////////////////////////////////////////////////////////////////////////////////////////// |
| 59 |