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3rdparty/boost_1_81_0/boost/icl/rational.hpp 2.17 KB
598bfd3f   Hu Chunming   提交_GLIBCXX_USE_CX...
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  /*-----------------------------------------------------------------------------+
  Copyright (c) 2008-2009: Joachim Faulhaber
  +------------------------------------------------------------------------------+
     Distributed under the Boost Software License, Version 1.0.
        (See accompanying file LICENCE.txt or copy at
             http://www.boost.org/LICENSE_1_0.txt)
  +-----------------------------------------------------------------------------*/
  
  /*------------------------------------------------------------------------------
  itl_rational provides adapter code for boost::rational.
  ------------------------------------------------------------------------------*/
  
  #ifndef BOOST_ICL_RATIONAL_HPP_JOFA_080913
  #define BOOST_ICL_RATIONAL_HPP_JOFA_080913
  
  #include <boost/config.hpp> // For BOOST_MSVC and more
  
  #ifdef BOOST_MSVC 
  #pragma warning(push)
  #pragma warning(disable:4127) // conditional expression is constant
  #pragma warning(disable:4512) // 'boost::detail::resetter' : assignment operator could not be generated
  #pragma warning(disable:4800) // 'unsigned int' : forcing value to bool 'true' or 'false' (performance warning)
  #endif                        
  
  #include <boost/rational.hpp>
  
  #ifdef BOOST_MSVC
  #pragma warning(pop)
  #endif
  
  #include <boost/icl/type_traits/is_continuous.hpp>
  #include <boost/icl/type_traits/has_inverse.hpp>
  #include <boost/icl/type_traits/is_numeric.hpp>
  
  namespace boost{namespace icl
  {
      template<class Integral> 
      struct is_numeric<boost::rational<Integral> >
      {
          typedef is_numeric type;
          BOOST_STATIC_CONSTANT(bool, value = true);
      };
  
      template<class Integral> 
      struct is_continuous<boost::rational<Integral> >
      {
          typedef is_continuous type;
          BOOST_STATIC_CONSTANT(bool, value = true);
      };
  
      template<class Integral> 
      struct is_discrete<boost::rational<Integral> >
      {
          typedef is_discrete type;
          BOOST_STATIC_CONSTANT(bool, value = false);
      };
  
      template<class Integral> 
      struct has_inverse<boost::rational<Integral> >
      {
          typedef has_inverse type;
          BOOST_STATIC_CONSTANT(bool, value = (boost::is_signed<Integral>::value));
      };
  
  }} // namespace icl boost
  
  
  #endif