1 // SPDX-License-Identifier: Apache-2.0 2 // 3 // Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au) 4 // Copyright 2008-2016 National ICT Australia (NICTA) 5 // 6 // Licensed under the Apache License, Version 2.0 (the "License"); 7 // you may not use this file except in compliance with the License. 8 // You may obtain a copy of the License at 9 // http://www.apache.org/licenses/LICENSE-2.0 10 // 11 // Unless required by applicable law or agreed to in writing, software 12 // distributed under the License is distributed on an "AS IS" BASIS, 13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 // See the License for the specific language governing permissions and 15 // limitations under the License. 16 // ------------------------------------------------------------------------ 17 18 19 //! \addtogroup SpToDOp 20 //! @{ 21 22 23 24 //! Class for storing data required for delayed unary operations on a sparse 25 //! matrix that produce a dense matrix; the data for storage may include 26 //! the operand (eg. the matrix to which the operation is to be applied) and the unary operator (eg. inverse). 27 //! The operand is stored as a reference (which can be optimised away), 28 //! while the operator is "stored" through the template definition (op_type). 29 //! The operands can be 'SpMat', 'SpRow', 'SpCol', 'SpOp', and 'SpGlue'. 30 //! Note that as 'SpGlue' can be one of the operands, more than one matrix can be stored. 31 //! 32 //! For example, we could have: 33 //! SpToDOp< SpGlue< SpMat, SpMat, sp_glue_times >, op_sp_plus > 34 35 template<typename T1, typename op_type> 36 class SpToDOp : public Base< typename T1::elem_type, SpToDOp<T1, op_type> > 37 { 38 public: 39 40 typedef typename T1::elem_type elem_type; 41 typedef typename get_pod_type<elem_type>::result pod_type; 42 43 inline explicit SpToDOp(const T1& in_m); 44 inline SpToDOp(const T1& in_m, const elem_type in_aux); 45 inline ~SpToDOp(); 46 47 arma_aligned const T1& m; //!< the operand; must be derived from SpBase 48 arma_aligned elem_type aux; //!< auxiliary data, using the element type as used by T1 49 50 static constexpr bool is_row = op_type::template traits<T1>::is_row; 51 static constexpr bool is_col = op_type::template traits<T1>::is_col; 52 static constexpr bool is_xvec = op_type::template traits<T1>::is_xvec; 53 }; 54 55 56 57 //! @} 58