1 //  © 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 ///////////////////////////////////////////////////////////////////////////////////////////////