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1 // Copyright (C) 2008-2012 NICTA (www.nicta.com.au)
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2 // Copyright (C) 2008-2012 Conrad Sanderson
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3 //
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4 // This Source Code Form is subject to the terms of the Mozilla Public
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5 // License, v. 2.0. If a copy of the MPL was not distributed with this
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6 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
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7
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8
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9 //! \addtogroup Glue
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10 //! @{
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11
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12
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13
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14 //! Class for storing data required for delayed binary operations,
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15 //! such as the operands (e.g. two matrices) and the binary operator (e.g. addition).
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16 //! The operands are stored as references (which can be optimised away),
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17 //! while the operator is "stored" through the template definition (glue_type).
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18 //! The operands can be 'Mat', 'Row', 'Col', 'Op', and 'Glue'.
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19 //! Note that as 'Glue' can be one of the operands, more than two matrices can be stored.
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20 //!
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21 //! For example, we could have: Glue<Mat, Mat, glue_times>
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22 //!
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23 //! Another example is: Glue< Op<Mat, op_htrans>, Op<Mat, op_inv>, glue_times >
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24
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25
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26
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27 template<typename T1, typename T2, typename glue_type>
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28 class Glue : public Base<typename T1::elem_type, Glue<T1, T2, glue_type> >
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29 {
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30 public:
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31
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32 typedef typename T1::elem_type elem_type;
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33 typedef typename get_pod_type<elem_type>::result pod_type;
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34
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35 static const bool is_row = (is_same_type<glue_type, glue_times>::value) ? T1::is_row : false;
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36 static const bool is_col = (is_same_type<glue_type, glue_times>::value) ? T2::is_col : false;
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37
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38 arma_inline Glue(const T1& in_A, const T2& in_B);
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39 arma_inline Glue(const T1& in_A, const T2& in_B, const uword in_aux_uword);
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40 arma_inline ~Glue();
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41
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42 const T1& A; //!< first operand
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43 const T2& B; //!< second operand
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44 uword aux_uword; //!< storage of auxiliary data, uword format
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45 };
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46
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47
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48
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49 //! @}
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