Expression object for dense matrix-sparse matrix Schur product.The DMatSMatSchurExpr class represents the compile time expression for Schur products between a dense matrix and a row-major sparse matrix.
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#include <DMatSMatSchurExpr.h>
Inherits blaze::SchurExpr< SparseMatrix< DMatSMatSchurExpr< MT1, MT2 >, false > >, and blaze::Computation.
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using | This = DMatSMatSchurExpr< MT1, MT2 > |
| Type of this DMatSMatSchurExpr instance.
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using | BaseType = SparseMatrix< This, false > |
| Base type of this DMatSMatSchurExpr instance.
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using | ResultType = SchurTrait_t< RT1, RT2 > |
| Result type for expression template evaluations.
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using | OppositeType = OppositeType_t< ResultType > |
| Result type with opposite storage order for expression template evaluations.
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using | TransposeType = TransposeType_t< ResultType > |
| Transpose type for expression template evaluations.
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using | ElementType = ElementType_t< ResultType > |
| Resulting element type.
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using | ReturnType = const If_t< returnExpr, ExprReturnType, ElementType > |
| Return type for expression template evaluations.
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using | CompositeType = If_t< useAssign, const ResultType, const DMatSMatSchurExpr &> |
| Data type for composite expression templates.
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using | LeftOperand = If_t< IsExpression_v< MT1 >, const MT1, const MT1 &> |
| Composite type of the left-hand side dense matrix expression.
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using | RightOperand = If_t< IsExpression_v< MT2 >, const MT2, const MT2 &> |
| Composite type of the right-hand side sparse matrix expression.
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using | MatrixType = DMatSMatSchurExpr< MT1, MT2 > |
| Type of the matrix.
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static constexpr bool | smpAssignable = false |
| Compilation switch for the expression template assignment strategy.
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static constexpr bool | storageOrder |
| Storage order of the matrix.
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using | RT1 = ResultType_t< MT1 > |
| Result type of the left-hand side dense matrix expression.
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using | RT2 = ResultType_t< MT2 > |
| Result type of the right-hand side sparse matrix expression.
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using | RN1 = ReturnType_t< MT1 > |
| Return type of the left-hand side dense matrix expression.
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using | RN2 = ReturnType_t< MT2 > |
| Return type of the right-hand side sparse matrix expression.
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using | CT1 = CompositeType_t< MT1 > |
| Composite type of the left-hand side dense matrix expression.
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using | CT2 = CompositeType_t< MT2 > |
| Composite type of the right-hand side sparse matrix expression.
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using | ExprReturnType = decltype(std::declval< RN1 >() *std::declval< RN2 >()) |
| Expression return type for the subscript operator.
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template<typename MT1, typename MT2>
class blaze::DMatSMatSchurExpr< MT1, MT2 >
Expression object for dense matrix-sparse matrix Schur product.
The DMatSMatSchurExpr class represents the compile time expression for Schur products between a dense matrix and a row-major sparse matrix.
◆ DMatSMatSchurExpr()
template<typename MT1 , typename MT2 >
Constructor for the DMatSMatSchurExpr class.
- Parameters
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lhs | The left-hand side dense matrix operand of the Schur product expression. |
rhs | The right-hand side sparse matrix operand of the Schur product expression. |
◆ at()
template<typename MT1 , typename MT2 >
Checked access to the matrix elements.
- Parameters
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i | Access index for the row. The index has to be in the range . |
j | Access index for the column. The index has to be in the range . |
- Returns
- The resulting value.
- Exceptions
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std::out_of_range | Invalid matrix access index. |
◆ begin()
template<typename MT1 , typename MT2 >
Returns an iterator to the first non-zero element of row i.
- Parameters
-
- Returns
- Iterator to the first non-zero element of row i.
◆ canAlias()
template<typename MT1 , typename MT2 >
template<typename T >
Returns whether the expression can alias with the given address alias.
- Parameters
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alias | The alias to be checked. |
- Returns
- true in case the expression can alias effect is detected, false otherwise.
◆ columns()
template<typename MT1 , typename MT2 >
Returns the current number of columns of the matrix.
- Returns
- The number of columns of the matrix.
◆ end()
template<typename MT1 , typename MT2 >
Returns an iterator just past the last non-zero element of row i.
- Parameters
-
- Returns
- Iterator just past the last non-zero element of row i.
◆ find()
template<typename MT1 , typename MT2 >
Searches for a specific matrix element.
- Parameters
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i | The row index of the search element. |
j | The column index of the search element. |
- Returns
- Iterator to the element in case the index is found, end() iterator otherwise.
◆ isAliased()
template<typename MT1 , typename MT2 >
template<typename T >
Returns whether the expression is aliased with the given address alias.
- Parameters
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alias | The alias to be checked. |
- Returns
- true in case an alias effect is detected, false otherwise.
◆ leftOperand()
template<typename MT1 , typename MT2 >
Returns the left-hand side dense matrix operand.
- Returns
- The left-hand side dense matrix operand.
◆ lowerBound()
template<typename MT1 , typename MT2 >
Returns an iterator to the first index not less then the given index.
- Parameters
-
i | The row index of the search element. |
j | The column index of the search element. |
- Returns
- Iterator to the first index not less then the given index, end() iterator otherwise.
◆ nonZeros() [1/2]
template<typename MT1 , typename MT2 >
Returns the number of non-zero elements in the sparse matrix.
- Returns
- The number of non-zero elements in the sparse matrix.
◆ nonZeros() [2/2]
template<typename MT1 , typename MT2 >
Returns the number of non-zero elements in the specified row.
- Parameters
-
- Returns
- The number of non-zero elements of row i.
◆ operator()()
template<typename MT1 , typename MT2 >
2D-access to the matrix elements.
- Parameters
-
i | Access index for the row. The index has to be in the range . |
j | Access index for the column. The index has to be in the range . |
- Returns
- The resulting value.
◆ operator~() [1/2]
Conversion operator for non-constant matrices.
- Returns
- Reference of the actual type of the matrix.
◆ operator~() [2/2]
Conversion operator for constant matrices.
- Returns
- Constant reference of the actual type of the matrix.
◆ rightOperand()
template<typename MT1 , typename MT2 >
Returns the right-hand side sparse matrix operand.
- Returns
- The right-hand side sparse matrix operand.
◆ rows()
template<typename MT1 , typename MT2 >
Returns the current number of rows of the matrix.
- Returns
- The number of rows of the matrix.
◆ upperBound()
template<typename MT1 , typename MT2 >
Returns an iterator to the first index greater then the given index.
- Parameters
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i | The row index of the search element. |
j | The column index of the search element. |
- Returns
- Iterator to the first index greater then the given index, end() iterator otherwise.
◆ returnExpr
template<typename MT1 , typename MT2 >
Compilation switch for the selection of the subscript operator return type.
The returnExpr compile time constant expression is a compilation switch for the selection of the ReturnType. If either matrix operand returns a temporary vector or matrix, returnExpr will be set to false and the subscript operator will return it's result by value. Otherwise returnExpr will be set to true and the subscript operator may return it's result as an expression.
◆ useAssign
template<typename MT1 , typename MT2 >
Compilation switch for the evaluation strategy of the Schur product expression.
The useAssign compile time constant expression represents a compilation switch for the evaluation strategy of the Schur product expression. In case either the dense or the sparse matrix operand requires an intermediate evaluation, useAssign will be set to true and the Schur product expression will be evaluated via the assign function family. Otherwise useAssign will be set to false and the expression will be evaluated via the function call operator.
The documentation for this class was generated from the following file: