Chris@49: // Copyright (C) 2008-2012 NICTA (www.nicta.com.au)
Chris@49: // Copyright (C) 2008-2012 Conrad Sanderson
Chris@49: // 
Chris@49: // This Source Code Form is subject to the terms of the Mozilla Public
Chris@49: // License, v. 2.0. If a copy of the MPL was not distributed with this
Chris@49: // file, You can obtain one at http://mozilla.org/MPL/2.0/.
Chris@49: 
Chris@49: 
Chris@49: //! \addtogroup Glue
Chris@49: //! @{
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! Class for storing data required for delayed binary operations,
Chris@49: //! such as the operands (e.g. two matrices) and the binary operator (e.g. addition).
Chris@49: //! The operands are stored as references (which can be optimised away),
Chris@49: //! while the operator is "stored" through the template definition (glue_type).
Chris@49: //! The operands can be 'Mat', 'Row', 'Col', 'Op', and 'Glue'.
Chris@49: //! Note that as 'Glue' can be one of the operands, more than two matrices can be stored.
Chris@49: //!
Chris@49: //! For example, we could have: Glue<Mat, Mat, glue_times>
Chris@49: //! 
Chris@49: //! Another example is: Glue< Op<Mat, op_htrans>, Op<Mat, op_inv>, glue_times >
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: template<typename T1, typename T2, typename glue_type>
Chris@49: class Glue : public Base<typename T1::elem_type, Glue<T1, T2, glue_type> >
Chris@49:   {
Chris@49:   public:
Chris@49:   
Chris@49:   typedef typename T1::elem_type                   elem_type;
Chris@49:   typedef typename get_pod_type<elem_type>::result pod_type;
Chris@49:   
Chris@49:   static const bool is_row = (is_same_type<glue_type, glue_times>::value) ? T1::is_row : false;
Chris@49:   static const bool is_col = (is_same_type<glue_type, glue_times>::value) ? T2::is_col : false;
Chris@49:   
Chris@49:   arma_inline  Glue(const T1& in_A, const T2& in_B);
Chris@49:   arma_inline  Glue(const T1& in_A, const T2& in_B, const uword in_aux_uword);
Chris@49:   arma_inline ~Glue();
Chris@49:   
Chris@49:   const T1&   A;          //!< first operand
Chris@49:   const T2&   B;          //!< second operand
Chris@49:         uword aux_uword;  //!< storage of auxiliary data, uword format
Chris@49:   };
Chris@49: 
Chris@49: 
Chris@49: 
Chris@49: //! @}