max@0: // Copyright (C) 2010-2011 NICTA (www.nicta.com.au)
max@0: // Copyright (C) 2010-2011 Conrad Sanderson
max@0: // Copyright (C) 2011 Stanislav Funiak
max@0: // 
max@0: // This file is part of the Armadillo C++ library.
max@0: // It is provided without any warranty of fitness
max@0: // for any purpose. You can redistribute this file
max@0: // and/or modify it under the terms of the GNU
max@0: // Lesser General Public License (LGPL) as published
max@0: // by the Free Software Foundation, either version 3
max@0: // of the License or (at your option) any later version.
max@0: // (see http://www.opensource.org/licenses for more info)
max@0: 
max@0: 
max@0: 
max@0: //! \addtogroup span
max@0: //! @{
max@0: 
max@0: 
max@0: struct span_alt {};
max@0: 
max@0: 
max@0: template<typename Dummy = int>
max@0: class span_base
max@0:   {
max@0:   public:
max@0:   static const span_alt all;
max@0:   };
max@0: 
max@0: 
max@0: template<typename Dummy>
max@0: const span_alt span_base<Dummy>::all = span_alt();
max@0: 
max@0: 
max@0: class span : public span_base<>
max@0:   {
max@0:   public:
max@0: 
max@0:   uword a;
max@0:   uword b;
max@0:   bool  whole;
max@0:   
max@0:   inline
max@0:   span()
max@0:     : whole(true)
max@0:     {
max@0:     }
max@0:   
max@0:   
max@0:   inline
max@0:   span(const span_alt&)
max@0:     : whole(true)
max@0:     {
max@0:     }
max@0:   
max@0:   // TODO:
max@0:   // if the "explicit" keyword is removed or commented out,
max@0:   // the compiler will be able to automatically convert integers to an instance of the span class.
max@0:   // this is useful for Cube::operator()(span&, span&, span&),
max@0:   // but it might have unintended consequences or interactions elsewhere.
max@0:   // as such, removal of "explicit" needs thorough testing.
max@0:   inline
max@0:   explicit
max@0:   span(const uword in_a)
max@0:     : a(in_a)
max@0:     , b(in_a)
max@0:     , whole(false)
max@0:     {
max@0:     }
max@0:   
max@0:   inline
max@0:   span(const uword in_a, const uword in_b)
max@0:     : a(in_a)
max@0:     , b(in_b)
max@0:     , whole(false)
max@0:     {
max@0:     }
max@0: 
max@0:   };
max@0: 
max@0: 
max@0: 
max@0: //! @}