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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 | /////////////////////////////////////////////////////////////////////////////////////////////// |