98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
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/*-----------------------------------------------------------------------------+
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Copyright (c) 2010-2010: Joachim Faulhaber
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+------------------------------------------------------------------------------+
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENCE.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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+-----------------------------------------------------------------------------*/
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#ifndef BOOST_ICL_TYPE_TRAITS_IS_NUMERIC_HPP_JOFA_100322
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#define BOOST_ICL_TYPE_TRAITS_IS_NUMERIC_HPP_JOFA_100322
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#include <limits>
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#include <complex>
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#include <functional>
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#include <boost/type_traits/is_floating_point.hpp>
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#include <boost/type_traits/is_integral.hpp>
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namespace boost{ namespace icl
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{
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template <class Type> struct is_fixed_numeric
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{
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typedef is_fixed_numeric type;
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BOOST_STATIC_CONSTANT(bool, value = (0 < std::numeric_limits<Type>::digits));
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};
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template <class Type> struct is_std_numeric
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{
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typedef is_std_numeric type;
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BOOST_STATIC_CONSTANT(bool,
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value = (std::numeric_limits<Type>::is_specialized));
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};
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template <class Type> struct is_std_integral
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{
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typedef is_std_integral type;
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BOOST_STATIC_CONSTANT(bool,
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value = (std::numeric_limits<Type>::is_integer));
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};
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template <class Type> struct is_numeric
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{
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typedef is_numeric type;
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BOOST_STATIC_CONSTANT(bool, value =
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(mpl::or_< is_std_numeric<Type>
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, boost::is_integral<Type>
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, is_std_integral<Type> >::value) );
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};
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template <class Type>
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struct is_numeric<std::complex<Type> >
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{
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typedef is_numeric type;
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BOOST_STATIC_CONSTANT(bool, value = true);
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};
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//--------------------------------------------------------------------------
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template<class Type, class Compare, bool Enable = false>
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struct numeric_minimum
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{
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static bool is_less_than(Type){ return true; }
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static bool is_less_than_or(Type, bool){ return true; }
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};
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template<class Type>
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struct numeric_minimum<Type, std::less<Type>, true>
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{
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static bool is_less_than(Type value)
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{ return std::less<Type>()((std::numeric_limits<Type>::min)(), value); }
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static bool is_less_than_or(Type value, bool cond)
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{ return cond || is_less_than(value); }
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};
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template<class Type>
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struct numeric_minimum<Type, std::greater<Type>, true>
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{
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static bool is_less_than(Type value)
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{ return std::greater<Type>()((std::numeric_limits<Type>::max)(), value); }
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static bool is_less_than_or(Type value, bool cond)
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{ return cond || is_less_than(value); }
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};
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//--------------------------------------------------------------------------
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template<class Type>
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struct is_non_floating_point
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{
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typedef is_non_floating_point type;
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BOOST_STATIC_CONSTANT(bool, value =
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(mpl::not_< is_floating_point<Type> >::value));
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};
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}} // namespace boost icl
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#endif
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