59 lines
2.1 KiB
C++
59 lines
2.1 KiB
C++
// Copyright (C) 2008-2015 National ICT Australia (NICTA)
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// -------------------------------------------------------------------
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//
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// Written by Conrad Sanderson - http://conradsanderson.id.au
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//! \addtogroup Glue
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//! @{
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//! Class for storing data required for delayed binary operations,
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//! such as the operands (e.g. two matrices) and the binary operator (e.g. addition).
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//! The operands are stored as references (which can be optimised away),
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//! while the operator is "stored" through the template definition (glue_type).
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//! The operands can be 'Mat', 'Row', 'Col', 'Op', and 'Glue'.
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//! Note that as 'Glue' can be one of the operands, more than two matrices can be stored.
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//!
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//! For example, we could have: Glue<Mat, Mat, glue_times>
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//!
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//! Another example is: Glue< Op<Mat, op_htrans>, Op<Mat, op_inv>, glue_times >
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template<typename T1, typename T2, typename glue_type>
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class Glue : public Base<typename T1::elem_type, Glue<T1, T2, glue_type> >
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{
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public:
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typedef typename T1::elem_type elem_type;
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typedef typename get_pod_type<elem_type>::result pod_type;
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static const bool is_row = \
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(is_same_type<glue_type, glue_times>::value && T1::is_row)
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|| (is_same_type<glue_type,glue_conv>::value && T1::is_row)
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|| (is_same_type<glue_type,glue_join_rows>::value && T1::is_row && T2::is_row);
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static const bool is_col = \
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(is_same_type<glue_type, glue_times>::value && T2::is_col)
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|| (is_same_type<glue_type,glue_conv>::value && T1::is_col)
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|| (is_same_type<glue_type,glue_join_cols>::value && T1::is_col && T2::is_col);
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arma_inline Glue(const T1& in_A, const T2& in_B);
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arma_inline Glue(const T1& in_A, const T2& in_B, const uword in_aux_uword);
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arma_inline ~Glue();
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const T1& A; //!< first operand
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const T2& B; //!< second operand
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uword aux_uword; //!< storage of auxiliary data, uword format
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};
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//! @}
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