35 #ifndef _BLAZE_MATH_EXPRESSIONS_TSVECSMATMULTEXPR_H_ 36 #define _BLAZE_MATH_EXPRESSIONS_TSVECSMATMULTEXPR_H_ 101 class TSVecSMatMultExpr
102 :
public TVecMatMultExpr< SparseVector< TSVecSMatMultExpr<VT,MT>, true > >
103 ,
private Computation
129 template<
typename T1 >
186 if( IsDiagonal_v<MT> )
188 return vec_[index] *
mat_(index,index);
190 else if( IsLower_v<MT> )
192 const size_t begin( IsStrictlyLower_v<MT> ? index+1UL : index );
197 else if( IsUpper_v<MT> )
199 const size_t n( IsStrictlyUpper_v<MT> ? index : index+1UL );
218 if( index >=
mat_.columns() ) {
221 return (*
this)[index];
230 inline size_t size() const noexcept {
231 return mat_.columns();
241 return mat_.columns();
271 template<
typename T >
272 inline bool canAlias(
const T* alias )
const noexcept {
273 return (
vec_.isAliased( alias ) ||
mat_.isAliased( alias ) );
283 template<
typename T >
284 inline bool isAliased(
const T* alias )
const noexcept {
285 return (
vec_.isAliased( alias ) ||
mat_.isAliased( alias ) );
295 return (
size() > SMP_TSVECSMATMULT_THRESHOLD );
318 template<
typename VT1 >
330 if( x.nonZeros() == 0UL )
return;
342 TSVecSMatMultExpr::selectAssignKernel( ~lhs, x, A );
361 template<
typename VT1
364 static inline void selectAssignKernel( VT1& y,
const VT2& x,
const MT1& A )
366 const auto vend( x.end() );
367 auto velem( x.begin() );
369 for( ; velem!=vend; ++velem )
371 const auto mend( A.end( velem->index() ) );
372 auto melem( A.begin( velem->index() ) );
374 for( ; melem!=mend; ++melem ) {
377 y[melem->index()] = velem->value() * melem->value();
379 y[melem->index()] += velem->value() * melem->value();
398 template<
typename VT1 >
399 friend inline void assign( SparseVector<VT1,true>& lhs,
const TSVecSMatMultExpr& rhs )
405 const DynamicVector<ElementType_t<VT1>,
true> tmp(
serial( rhs ) );
424 template<
typename VT1 >
425 friend inline void addAssign( DenseVector<VT1,true>& lhs,
const TSVecSMatMultExpr& rhs )
433 if( x.nonZeros() == 0UL )
return;
445 TSVecSMatMultExpr::selectAddAssignKernel( ~lhs, x, A );
464 template<
typename VT1
467 static inline void selectAddAssignKernel( VT1& y,
const VT2& x,
const MT1& A )
469 const auto vend( x.end() );
470 auto velem( x.begin() );
472 for( ; velem!=vend; ++velem )
474 const auto mend( A.end( velem->index() ) );
475 auto melem( A.begin( velem->index() ) );
477 for( ; melem!=mend; ++melem ) {
478 y[melem->index()] += velem->value() * melem->value();
502 template<
typename VT1 >
503 friend inline void subAssign( DenseVector<VT1,true>& lhs,
const TSVecSMatMultExpr& rhs )
511 if( x.nonZeros() == 0UL )
return;
523 TSVecSMatMultExpr::selectSubAssignKernel( ~lhs, x, A );
542 template<
typename VT1
545 static inline void selectSubAssignKernel( VT1& y,
const VT2& x,
const MT1& A )
547 const auto vend( x.end() );
548 auto velem( x.begin() );
550 for( ; velem!=vend; ++velem )
552 const auto mend( A.end( velem->index() ) );
553 auto melem( A.begin( velem->index() ) );
555 for( ; melem!=mend; ++melem ) {
556 y[melem->index()] -= velem->value() * melem->value();
580 template<
typename VT1 >
581 friend inline void multAssign( DenseVector<VT1,true>& lhs,
const TSVecSMatMultExpr& rhs )
592 multAssign( ~lhs, tmp );
616 template<
typename VT1 >
618 -> EnableIf_t< UseSMPAssign_v<VT1> >
629 if( x.nonZeros() == 0UL )
return;
665 template<
typename VT1 >
667 -> EnableIf_t< UseSMPAssign_v<VT1> >
675 if( x.nonZeros() == 0UL )
return;
711 template<
typename VT1 >
713 -> EnableIf_t< UseSMPAssign_v<VT1> >
721 if( x.nonZeros() == 0UL )
return;
757 template<
typename VT1 >
759 -> EnableIf_t< UseSMPAssign_v<VT1> >
815 template<
typename VT
818 IsSame_v< ElementType_t<VT>, ElementType_t<MT> > ) ||
819 ( IsZero_v<MT> || IsZero_v<VT> ) >* =
nullptr >
820 inline const TSVecSMatMultExpr<VT,MT>
821 tsvecsmatmult(
const SparseVector<VT,true>& vec,
const SparseMatrix<MT,false>& mat )
827 return TSVecSMatMultExpr<VT,MT>( ~vec, ~mat );
847 template<
typename VT
850 IsSame_v< ElementType_t<VT>, ElementType_t<MT> > ) &&
851 !IsZero_v<VT> >* =
nullptr >
853 tsvecsmatmult(
const SparseVector<VT,true>& vec,
const SparseMatrix<MT,false>& mat )
881 template<
typename VT
883 , EnableIf_t< IsZero_v<MT> || IsZero_v<VT> >* =
nullptr >
884 inline decltype(
auto)
885 tsvecsmatmult( const SparseVector<VT,true>& vec, const SparseMatrix<MT,false>& mat )
893 using ReturnType =
const MultTrait_t< ResultType_t<VT>, ResultType_t<MT> >;
898 return ReturnType( (~mat).
columns() );
935 template<
typename VT
937 inline decltype(
auto)
944 if( (~vec).
size() != (~mat).
rows() ) {
948 return tsvecsmatmult( ~vec, ~mat );
#define BLAZE_THROW_INVALID_ARGUMENT(MESSAGE)
Macro for the emission of a std::invalid_argument exception.This macro encapsulates the default way o...
Definition: Exception.h:235
Header file for auxiliary alias declarations.
decltype(auto) column(Matrix< MT, SO > &matrix, RCAs... args)
Creating a view on a specific column of the given matrix.
Definition: Column.h:133
Header file for the blaze::checked and blaze::unchecked instances.
ElementType_t< ResultType > ElementType
Resulting element type.
Definition: TSVecSMatMultExpr.h:140
Header file for basic type definitions.
Header file for the SparseVector base class.
typename If< Condition, T1, T2 >::Type If_t
Auxiliary alias template for the If class template.The If_t alias template provides a convenient shor...
Definition: If.h:109
typename T::ResultType ResultType_t
Alias declaration for nested ResultType type definitions.The ResultType_t alias declaration provides ...
Definition: Aliases.h:390
Header file for the serial shim.
static constexpr bool evaluateMatrix
Compilation switch for the composite type of the right-hand side sparse matrix expression.
Definition: TSVecSMatMultExpr.h:120
Header file for the IsDiagonal type trait.
ResultType_t< VT > VRT
Result type of the left-hand side sparse vector expression.
Definition: TSVecSMatMultExpr.h:107
MT::Iterator begin(Matrix< MT, SO > &matrix, size_t i)
Returns an iterator to the first element of row/column i.
Definition: Matrix.h:372
const ElementType ReturnType
Return type for expression template evaluations.
Definition: TSVecSMatMultExpr.h:141
void reset(const DiagonalProxy< MT > &proxy)
Resetting the represented element to the default initial values.
Definition: DiagonalProxy.h:595
constexpr Unchecked unchecked
Global Unchecked instance.The blaze::unchecked instance is an optional token for the creation of view...
Definition: Check.h:138
Constraint on the data type.
decltype(auto) subvector(Vector< VT, TF > &, RSAs...)
Creating a view on a specific subvector of the given vector.
Definition: Subvector.h:154
Header file for the MAYBE_UNUSED function template.
Header file for the IsIdentity type trait.
LeftOperand leftOperand() const noexcept
Returns the left-hand side sparse vector operand.
Definition: TSVecSMatMultExpr.h:250
Header file for the Computation base class.
size_t size() const noexcept
Returns the current size/dimension of the vector.
Definition: TSVecSMatMultExpr.h:230
Header file for the reset shim.
Constraints on the storage order of matrix types.
RightOperand mat_
Right-hand side sparse matrix of the multiplication expression.
Definition: TSVecSMatMultExpr.h:302
Header file for the RequiresEvaluation type trait.
ReturnType operator[](size_t index) const
Subscript operator for the direct access to the vector elements.
Definition: TSVecSMatMultExpr.h:183
bool canAlias(const T *alias) const noexcept
Returns whether the expression can alias with the given address alias.
Definition: TSVecSMatMultExpr.h:272
Header file for the implementation of an arbitrarily sized vector.
constexpr size_t columns(const Matrix< MT, SO > &matrix) noexcept
Returns the current number of columns of the matrix.
Definition: Matrix.h:514
TransposeType_t< ResultType > TransposeType
Transpose type for expression template evaluations.
Definition: TSVecSMatMultExpr.h:139
TSVecSMatMultExpr(const VT &vec, const MT &mat) noexcept
Constructor for the TSVecSMatMultExpr class.
Definition: TSVecSMatMultExpr.h:169
Base class for sparse matrices.The SparseMatrix class is a base class for all sparse matrix classes....
Definition: Forward.h:145
typename T::ElementType ElementType_t
Alias declaration for nested ElementType type definitions.The ElementType_t alias declaration provide...
Definition: Aliases.h:170
If_t< evaluateMatrix, const MRT, MCT > RT
Type for the assignment of the right-hand side sparse matrix operand.
Definition: TSVecSMatMultExpr.h:154
Constraint on the data type.
typename EnableIf< Condition, T >::Type EnableIf_t
Auxiliary type for the EnableIf class template.The EnableIf_t alias declaration provides a convenient...
Definition: EnableIf.h:138
constexpr bool IsResizable_v
Auxiliary variable template for the IsResizable type trait.The IsResizable_v variable template provid...
Definition: IsResizable.h:133
Header file for the DisableIf class template.
Header file for the multiplication trait.
Header file for the IsStrictlyUpper type trait.
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
Header file for the If class template.
#define BLAZE_CONSTRAINT_MUST_BE_ZERO_TYPE(T)
Constraint on the data type.In case the given data type T is not a zero vector or matrix type,...
Definition: Zero.h:61
Expression object for sparse vector-sparse matrix multiplications.The TSVecSMatMultExpr class represe...
Definition: Forward.h:195
#define BLAZE_THROW_OUT_OF_RANGE(MESSAGE)
Macro for the emission of a std::out_of_range exception.This macro encapsulates the default way of Bl...
Definition: Exception.h:331
ReturnType at(size_t index) const
Checked access to the vector elements.
Definition: TSVecSMatMultExpr.h:217
size_t nonZeros() const
Returns an estimation for the number of non-zero elements in the sparse vector.
Definition: TSVecSMatMultExpr.h:240
Base class for N-dimensional dense vectors.The DenseVector class is a base class for all arbitrarily ...
Definition: DenseVector.h:76
ResultType_t< MT > MRT
Result type of the right-hand side sparse matrix expression.
Definition: TSVecSMatMultExpr.h:108
static constexpr bool smpAssignable
Compilation switch for the expression template assignment strategy.
Definition: TSVecSMatMultExpr.h:159
Header file for the IsLower type trait.
constexpr void MAYBE_UNUSED(const Args &...)
Suppression of unused parameter warnings.
Definition: MaybeUnused.h:81
#define BLAZE_CONSTRAINT_MUST_BE_SPARSE_VECTOR_TYPE(T)
Constraint on the data type.In case the given data type T is not a sparse, N-dimensional vector type,...
Definition: SparseVector.h:61
#define BLAZE_CONSTRAINT_MUST_NOT_BE_MATMATMULTEXPR_TYPE(T)
Constraint on the data type.In case the given data type T is a matrix/matrix multiplication expressio...
Definition: MatMatMultExpr.h:83
Header file for the exception macros of the math module.
bool isAliased(const T *alias) const noexcept
Returns whether the expression is aliased with the given address alias.
Definition: TSVecSMatMultExpr.h:284
Constraint on the data type.
Constraint on the data type.
Header file for the EnableIf class template.
Header file for the IsStrictlyLower type trait.
LeftOperand vec_
Left-hand side sparse vector of the multiplication expression.
Definition: TSVecSMatMultExpr.h:301
CompositeType_t< MT > MCT
Composite type of the right-hand side sparse matrix expression.
Definition: TSVecSMatMultExpr.h:110
If_t< IsExpression_v< MT >, const MT, const MT & > RightOperand
Composite type of the right-hand side sparse matrix expression.
Definition: TSVecSMatMultExpr.h:148
typename MultTrait< T1, T2 >::Type MultTrait_t
Auxiliary alias declaration for the MultTrait class template.The MultTrait_t alias declaration provid...
Definition: MultTrait.h:240
If_t< evaluateVector, const VRT, VCT > LT
Type for the assignment of the left-hand side sparse vector operand.
Definition: TSVecSMatMultExpr.h:151
#define BLAZE_CONSTRAINT_MUST_BE_ROW_MAJOR_MATRIX_TYPE(T)
Constraint on the data type.In case the given data type T is not a row-major dense or sparse matrix t...
Definition: RowMajorMatrix.h:61
CompositeType_t< VT > VCT
Composite type of the left-hand side sparse vector expression.
Definition: TSVecSMatMultExpr.h:109
bool canSMPAssign() const noexcept
Returns whether the expression can be used in SMP assignments.
Definition: TSVecSMatMultExpr.h:294
typename T::TransposeType TransposeType_t
Alias declaration for nested TransposeType type definitions.The TransposeType_t alias declaration pro...
Definition: Aliases.h:470
Header file for run time assertion macros.
typename T::CompositeType CompositeType_t
Alias declaration for nested CompositeType type definitions.The CompositeType_t alias declaration pro...
Definition: Aliases.h:90
auto smpAddAssign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs) -> EnableIf_t< IsDenseMatrix_v< MT1 > >
Default implementation of the SMP addition assignment of a matrix to a dense matrix.
Definition: DenseMatrix.h:131
Header file for the IsZero type trait.
Constraint on the data type.
#define BLAZE_FUNCTION_TRACE
Function trace macro.This macro can be used to reliably trace function calls. In case function tracin...
Definition: FunctionTrace.h:94
Header file for all forward declarations for expression class templates.
Header file for the isDefault shim.
constexpr size_t size(const Matrix< MT, SO > &matrix) noexcept
Returns the total number of elements of the matrix.
Definition: Matrix.h:530
auto smpAssign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs) -> EnableIf_t< IsDenseMatrix_v< MT1 > >
Default implementation of the SMP assignment of a matrix to a dense matrix.
Definition: DenseMatrix.h:100
Header file for the TVecMatMultExpr base class.
decltype(auto) serial(const DenseMatrix< MT, SO > &dm)
Forces the serial evaluation of the given dense matrix expression dm.
Definition: DMatSerialExpr.h:808
#define BLAZE_CONSTRAINT_MUST_NOT_REQUIRE_EVALUATION(T)
Constraint on the data type.In case the given data type T requires an intermediate evaluation within ...
Definition: RequiresEvaluation.h:81
MultTrait_t< VRT, MRT > ResultType
Result type for expression template evaluations.
Definition: TSVecSMatMultExpr.h:138
constexpr size_t rows(const Matrix< MT, SO > &matrix) noexcept
Returns the current number of rows of the matrix.
Definition: Matrix.h:498
#define BLAZE_CONSTRAINT_MUST_FORM_VALID_TVECMATMULTEXPR(T1, T2)
Constraint on the data type.In case the given data types T1 and T2 do not form a valid vector/matrix ...
Definition: TVecMatMultExpr.h:104
RightOperand rightOperand() const noexcept
Returns the right-hand side sparse matrix operand.
Definition: TSVecSMatMultExpr.h:260
Header file for the IsComputation type trait class.
auto smpSubAssign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs) -> EnableIf_t< IsDenseMatrix_v< MT1 > >
Default implementation of the SMP subtraction assignment of a matrix to dense matrix.
Definition: DenseMatrix.h:162
If_t< IsExpression_v< VT >, const VT, const VT & > LeftOperand
Composite type of the left-hand side sparse vector expression.
Definition: TSVecSMatMultExpr.h:145
const ResultType CompositeType
Data type for composite expression templates.
Definition: TSVecSMatMultExpr.h:142
Base class for sparse vectors.The SparseVector class is a base class for all arbitrarily sized (N-dim...
Definition: Forward.h:146
#define BLAZE_CONSTRAINT_MUST_BE_ROW_VECTOR_TYPE(T)
Constraint on the data type.In case the given data type T is not a row dense or sparse vector type (i...
Definition: RowVector.h:61
static constexpr bool evaluateVector
Compilation switch for the composite type of the left-hand side sparse vector expression.
Definition: TSVecSMatMultExpr.h:115
bool isDefault(const DiagonalProxy< MT > &proxy)
Returns whether the represented element is in default state.
Definition: DiagonalProxy.h:635
Header file for the IsUpper type trait.
typename DisableIf< Condition, T >::Type DisableIf_t
Auxiliary type for the DisableIf class template.The DisableIf_t alias declaration provides a convenie...
Definition: DisableIf.h:138
Constraint on the data type.
Header file for the IsResizable type trait.
#define BLAZE_CONSTRAINT_MUST_NOT_BE_ZERO_TYPE(T)
Constraint on the data type.In case the given data type T is a zero vector or matrix type,...
Definition: Zero.h:81
Header file for the thresholds for matrix/vector and matrix/matrix multiplications.
#define BLAZE_INTERNAL_ASSERT(expr, msg)
Run time assertion macro for internal checks.In case of an invalid run time expression,...
Definition: Assert.h:101
auto smpMultAssign(Vector< VT1, TF1 > &lhs, const Vector< VT2, TF2 > &rhs) -> EnableIf_t< IsDenseVector_v< VT1 > >
Default implementation of the SMP multiplication assignment of a vector to a dense vector.
Definition: DenseVector.h:191
#define BLAZE_CONSTRAINT_MUST_BE_SPARSE_MATRIX_TYPE(T)
Constraint on the data type.In case the given data type T is not a sparse, N-dimensional matrix type,...
Definition: SparseMatrix.h:61
Constraint on the transpose flag of vector types.
Header file for the IsExpression type trait class.
Header file for the function trace functionality.