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118 lines
3.3 KiB
118 lines
3.3 KiB
// Copyright (c) 2001-2011 Hartmut Kaiser |
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// |
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// Distributed under the Boost Software License, Version 1.0. (See accompanying |
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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#if !defined(BOOST_SPIRIT_NUMERIC_TRAITS_JAN_07_2011_0722AM) |
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#define BOOST_SPIRIT_NUMERIC_TRAITS_JAN_07_2011_0722AM |
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#if defined(_MSC_VER) |
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#pragma once |
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#endif |
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#include <boost/config.hpp> |
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#include <boost/mpl/bool.hpp> |
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namespace boost { namespace spirit { namespace traits |
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{ |
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/////////////////////////////////////////////////////////////////////////// |
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// Determine if T is a boolean type |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename T> |
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struct is_bool : mpl::false_ {}; |
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template <typename T> |
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struct is_bool<T const> : is_bool<T> {}; |
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template <> |
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struct is_bool<bool> : mpl::true_ {}; |
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/////////////////////////////////////////////////////////////////////////// |
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// Determine if T is a signed integer type |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename T> |
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struct is_int : mpl::false_ {}; |
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template <typename T> |
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struct is_int<T const> : is_int<T> {}; |
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template <> |
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struct is_int<short> : mpl::true_ {}; |
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template <> |
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struct is_int<int> : mpl::true_ {}; |
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template <> |
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struct is_int<long> : mpl::true_ {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <> |
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struct is_int<boost::long_long_type> : mpl::true_ {}; |
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#endif |
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/////////////////////////////////////////////////////////////////////////// |
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// Determine if T is an unsigned integer type |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename T> |
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struct is_uint : mpl::false_ {}; |
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template <typename T> |
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struct is_uint<T const> : is_uint<T> {}; |
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#if !defined(BOOST_NO_INTRINSIC_WCHAR_T) |
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template <> |
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struct is_uint<unsigned short> : mpl::true_ {}; |
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#endif |
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template <> |
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struct is_uint<unsigned int> : mpl::true_ {}; |
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template <> |
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struct is_uint<unsigned long> : mpl::true_ {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <> |
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struct is_uint<boost::ulong_long_type> : mpl::true_ {}; |
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#endif |
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/////////////////////////////////////////////////////////////////////////// |
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// Determine if T is a floating point type |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename T> |
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struct is_real : mpl::false_ {}; |
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template <typename T> |
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struct is_real<T const> : is_uint<T> {}; |
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template <> |
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struct is_real<float> : mpl::true_ {}; |
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template <> |
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struct is_real<double> : mpl::true_ {}; |
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template <> |
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struct is_real<long double> : mpl::true_ {}; |
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/////////////////////////////////////////////////////////////////////////// |
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// customization points for numeric operations |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename T, typename Enable = void> |
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struct absolute_value; |
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template <typename T, typename Enable = void> |
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struct is_negative; |
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template <typename T, typename Enable = void> |
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struct is_zero; |
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template <typename T, typename Enable = void> |
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struct pow10_helper; |
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template <typename T, typename Enable = void> |
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struct is_nan; |
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template <typename T, typename Enable = void> |
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struct is_infinite; |
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}}} |
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#endif
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