56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
// Copyright 2008-2016 Conrad Sanderson (http://conradsanderson.id.au)
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// Copyright 2008-2016 National ICT Australia (NICTA)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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//! \addtogroup SpToDOp
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//! @{
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//! Class for storing data required for delayed unary operations on a sparse
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//! matrix that produce a dense matrix; the data for storage may include
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//! the operand (e.g. the matrix to which the operation is to be applied) and the unary operator (e.g. inverse).
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//! The operand is stored as a reference (which can be optimised away),
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//! while the operator is "stored" through the template definition (op_type).
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//! The operands can be 'SpMat', 'SpRow', 'SpCol', 'SpOp', and 'SpGlue'.
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//! Note that as 'SpGlue' can be one of the operands, more than one matrix can be stored.
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//!
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//! For example, we could have:
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//! SpToDOp< SpGlue< SpMat, SpMat, sp_glue_times >, op_sp_plus >
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template<typename T1, typename op_type>
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class SpToDOp : public Base< typename T1::elem_type, SpToDOp<T1, op_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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inline explicit SpToDOp(const T1& in_m);
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inline SpToDOp(const T1& in_m, const elem_type in_aux);
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inline ~SpToDOp();
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arma_aligned const T1& m; //!< the operand; must be derived from SpBase
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arma_aligned elem_type aux; //!< auxiliary data, using the element type as used by T1
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static constexpr bool is_row = op_type::template traits<T1>::is_row;
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static constexpr bool is_col = op_type::template traits<T1>::is_col;
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static constexpr bool is_xvec = op_type::template traits<T1>::is_xvec;
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};
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//! @}
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