C:/nobackup/private/physical_svn/trunk/include/physical/dynamicunit.hpp

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/*=============================================================================
    physical quantities / units / constants
    Copyright (c) 2006, 2007 Martin Schulz
    http://physical.sourceforge.net
  
    This is private code by Martin Schulz.
  
    Use, modification and distribution is subject to the Boost Software
    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
    http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/

#ifndef PHYSICAL_DYNAMICUNIT
#define PHYSICAL_DYNAMICUNIT

#include "physical/detail/dynamicexponents.hpp"
#include "physical/detail/dynamicscale.hpp"
#include "physical/fixedphysical.hpp"

namespace physical {

        // forward declaration:
   template<class UnitSystem> 
        struct DynamicPhysical;

   template<class UnitSystem> 
        struct DynamicUnit {
                detail::DynamicExponents<UnitSystem> exponents;
                detail::DynamicScale scale;

                DynamicUnit(const DynamicUnit<UnitSystem>& definition, const detail::DynamicScale scale);

      template<typename T, class Exponents>
      explicit DynamicUnit(const FixedPhysical<UnitSystem, T, Exponents>& definition)           
         : exponents(Exponents())
                   , scale(definition.numerical_value, 0.)
           {};

                explicit DynamicUnit(const DynamicPhysical<UnitSystem>& definition);
                explicit DynamicUnit(const DynamicPhysical<UnitSystem>& definition, const detail::DynamicScale scacle);
        };


/*
        // conversion from FixedPhysical to unit (no offset possible here)
        template < class UnitSystem, class FixedPhysical> 
        DynamicUnit<UnitSystem>::DynamicUnit(const FixedPhysical& definition)
                : exponents(typename FixedPhysical::exponents())
                , scale(definition.numerical_value, 0.)
        {};
*/

}; // namespace physical


#include "physical/detail/dynamicunit_impl.hpp"

#endif // PHYSICAL_DYNAMICUNIT

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