35#ifndef _BLAZE_MATH_EXPRESSIONS_SVECSCALARMULTEXPR_H_
36#define _BLAZE_MATH_EXPRESSIONS_SVECSCALARMULTEXPR_H_
128 static constexpr bool useAssign = RequiresEvaluation_v<VT>;
132 template<
typename VT2 >
133 static constexpr bool UseAssign_v =
useAssign;
145 template<
typename VT2 >
146 static constexpr bool UseSMPAssign_v =
147 ( ( !VT2::smpAssignable || !VT::smpAssignable ) &&
useAssign );
341 if( index >=
vector_.size() ) {
344 return (*
this)[index];
373 inline size_t size() const noexcept {
450 template<
typename T >
451 inline bool canAlias(
const T* alias )
const noexcept {
452 return vector_.canAlias( alias );
462 template<
typename T >
463 inline bool isAliased(
const T* alias )
const noexcept {
464 return vector_.isAliased( alias );
488 template<
typename VT2 >
496 assign( *lhs, rhs.vector_ );
497 (*lhs) *= rhs.scalar_;
516 template<
typename VT2 >
524 assign( *lhs, rhs.vector_ );
525 (*lhs) *= rhs.scalar_;
544 template<
typename VT2 >
545 friend inline auto addAssign( DenseVector<VT2,TF>& lhs,
const SVecScalarMultExpr& rhs )
546 -> EnableIf_t< UseAssign_v<VT2> >
557 addAssign( *lhs, tmp );
580 template<
typename VT2 >
581 friend inline auto subAssign( DenseVector<VT2,TF>& lhs,
const SVecScalarMultExpr& rhs )
582 -> EnableIf_t< UseAssign_v<VT2> >
593 subAssign( *lhs, tmp );
616 template<
typename VT2 >
617 friend inline auto multAssign( DenseVector<VT2,TF>& lhs,
const SVecScalarMultExpr& rhs )
618 -> EnableIf_t< UseAssign_v<VT2> >
629 multAssign( *lhs, tmp );
660 template<
typename VT2 >
662 -> EnableIf_t< UseSMPAssign_v<VT2> >
696 template<
typename VT2 >
698 -> EnableIf_t< UseSMPAssign_v<VT2> >
732 template<
typename VT2 >
734 -> EnableIf_t< UseSMPAssign_v<VT2> >
800 return ReturnType( *sv, ScalarType(-1) );
829 , DisableIf_t< IsZero_v<VT> >* =
nullptr >
830inline const SVecScalarMultExpr< VT, MultTrait_t< UnderlyingBuiltin_t<VT>, ST >, TF >
831 svecscalarmult(
const SparseVector<VT,TF>& vec, ST scalar )
835 using ScalarType = MultTrait_t< UnderlyingBuiltin_t<VT>, ST >;
836 using ReturnType =
const SVecScalarMultExpr<VT,ScalarType,TF>;
837 return ReturnType( *vec, scalar );
859 , EnableIf_t< IsZero_v<VT> >* =
nullptr >
861 svecscalarmult(
const SparseVector<VT,TF>& vec, ST scalar )
867 using ReturnType =
const MultTrait_t< ResultType_t<VT>, ST >;
872 return ReturnType( (*vec).size() );
902 , EnableIf_t< IsScalar_v<ST> >* =
nullptr >
907 return svecscalarmult( *vec, scalar );
936 , EnableIf_t< IsScalar_v<ST> >* =
nullptr >
941 return svecscalarmult( *vec, scalar );
978 const auto len (
length( *vec ) );
979 auto ilen( !
isZero(len) ?
inv(len) : len );
982 return ReturnType( *vec, ilen );
Header file for auxiliary alias declarations.
typename T::CompositeType CompositeType_t
Alias declaration for nested CompositeType type definitions.
Definition: Aliases.h:110
typename T::ReturnType ReturnType_t
Alias declaration for nested ReturnType type definitions.
Definition: Aliases.h:470
typename T::ResultType ResultType_t
Alias declaration for nested ResultType type definitions.
Definition: Aliases.h:450
typename T::ElementType ElementType_t
Alias declaration for nested ElementType type definitions.
Definition: Aliases.h:190
typename T::ConstIterator ConstIterator_t
Alias declaration for nested ConstIterator type definitions.
Definition: Aliases.h:130
typename T::TransposeType TransposeType_t
Alias declaration for nested TransposeType type definitions.
Definition: Aliases.h:550
Header file for run time assertion macros.
decltype(auto) normalize(const DenseVector< VT, TF > &vec)
Normalization of the dense vector ( ).
Definition: DVecScalarMultExpr.h:1155
Header file for the EnableIf class template.
Header file for the function trace functionality.
Header file for the If class template.
Header file for the invert shim.
Header file for the IsExpression type trait class.
Header file for the IsScalar type trait.
Header file for the IsTemporary type trait class.
Deactivation of problematic macros.
Header file for the MAYBE_UNUSED function template.
Header file for the multiplication trait.
Header file for the RemoveReference type trait.
Constraint on the data type.
Header file for the UnderlyingBuiltin type trait.
Header file for the ValueIndexPair class.
Constraint on the data type.
Base class for N-dimensional dense vectors.
Definition: DenseVector.h:77
Iterator over the elements of the sparse vector/scalar multiplication expression.
Definition: SVecScalarMultExpr.h:185
IteratorType vector_
Iterator over the elements of the left-hand side sparse vector expression.
Definition: SVecScalarMultExpr.h:303
ptrdiff_t DifferenceType
Difference between two iterators.
Definition: SVecScalarMultExpr.h:198
const Element operator*() const
Direct access to the sparse vector element at the current iterator position.
Definition: SVecScalarMultExpr.h:233
ReturnType value() const
Access to the current value of the sparse element.
Definition: SVecScalarMultExpr.h:253
std::forward_iterator_tag IteratorCategory
The iterator category.
Definition: SVecScalarMultExpr.h:194
ValueIndexPair< ElementType > Element
Element type of the sparse vector expression.
Definition: SVecScalarMultExpr.h:189
ValueType & ReferenceType
Reference return type.
Definition: SVecScalarMultExpr.h:197
ValueType * PointerType
Pointer return type.
Definition: SVecScalarMultExpr.h:196
IteratorCategory iterator_category
The iterator category.
Definition: SVecScalarMultExpr.h:201
RightOperand scalar_
Right-hand side scalar of the multiplication expression.
Definition: SVecScalarMultExpr.h:304
ConstIterator(IteratorType vector, RightOperand scalar)
Constructor for the ConstIterator class.
Definition: SVecScalarMultExpr.h:211
DifferenceType difference_type
Difference between two iterators.
Definition: SVecScalarMultExpr.h:205
bool operator!=(const ConstIterator &rhs) const
Inequality comparison between two ConstIterator objects.
Definition: SVecScalarMultExpr.h:285
Element ValueType
Type of the underlying pointers.
Definition: SVecScalarMultExpr.h:195
ConstIterator & operator++()
Pre-increment operator.
Definition: SVecScalarMultExpr.h:222
bool operator==(const ConstIterator &rhs) const
Equality comparison between two ConstIterator objects.
Definition: SVecScalarMultExpr.h:274
const ConstIterator * operator->() const
Direct access to the sparse vector element at the current iterator position.
Definition: SVecScalarMultExpr.h:243
ConstIterator_t< RemoveReference_t< LeftOperand > > IteratorType
Iterator type of the sparse vector expression.
Definition: SVecScalarMultExpr.h:192
DifferenceType operator-(const ConstIterator &rhs) const
Calculating the number of elements between two expression iterators.
Definition: SVecScalarMultExpr.h:296
size_t index() const
Access to the current index of the sparse element.
Definition: SVecScalarMultExpr.h:263
Expression object for sparse vector-scalar multiplications.
Definition: SVecScalarMultExpr.h:99
ResultType_t< VT > RT
Result type of the sparse vector expression.
Definition: SVecScalarMultExpr.h:102
CompositeType_t< VT > CT
Composite type of the sparse vector expression.
Definition: SVecScalarMultExpr.h:104
RightOperand scalar_
Right-hand side scalar of the multiplication expression.
Definition: SVecScalarMultExpr.h:471
decltype(std::declval< RN >() *std::declval< ST >()) ExprReturnType
Expression return type for the subscript operator.
Definition: SVecScalarMultExpr.h:117
ReturnType operator[](size_t index) const
Subscript operator for the direct access to the vector elements.
Definition: SVecScalarMultExpr.h:327
size_t nonZeros() const
Returns the number of non-zero elements in the sparse vector.
Definition: SVecScalarMultExpr.h:383
ST RightOperand
Composite type of the right-hand side scalar value.
Definition: SVecScalarMultExpr.h:173
static constexpr bool useAssign
Compilation switch for the serial evaluation strategy of the multiplication expression.
Definition: SVecScalarMultExpr.h:128
size_t size() const noexcept
Returns the current size/dimension of the vector.
Definition: SVecScalarMultExpr.h:373
ConstIterator begin() const
Returns an iterator to the first non-zero element of the sparse vector.
Definition: SVecScalarMultExpr.h:353
ReturnType at(size_t index) const
Checked access to the vector elements.
Definition: SVecScalarMultExpr.h:340
ConstIterator find(size_t index) const
Searches for a specific vector element.
Definition: SVecScalarMultExpr.h:394
SVecScalarMultExpr(const VT &vector, ST scalar) noexcept
Constructor for the SVecScalarMultExpr class.
Definition: SVecScalarMultExpr.h:315
const If_t< returnExpr, ExprReturnType, ElementType > ReturnType
Return type for expression template evaluations.
Definition: SVecScalarMultExpr.h:164
LeftOperand leftOperand() const noexcept
Returns the left-hand side sparse vector operand.
Definition: SVecScalarMultExpr.h:429
bool canAlias(const T *alias) const noexcept
Returns whether the expression can alias with the given address alias.
Definition: SVecScalarMultExpr.h:451
ReturnType_t< VT > RN
Return type of the sparse vector expression.
Definition: SVecScalarMultExpr.h:103
ConstIterator lowerBound(size_t index) const
Returns an iterator to the first index not less then the given index.
Definition: SVecScalarMultExpr.h:406
ElementType_t< ResultType > ElementType
Resulting element type.
Definition: SVecScalarMultExpr.h:161
LeftOperand vector_
Left-hand side sparse vector of the multiplication expression.
Definition: SVecScalarMultExpr.h:470
MultTrait_t< RT, ST > ResultType
Result type for expression template evaluations.
Definition: SVecScalarMultExpr.h:159
TransposeType_t< ResultType > TransposeType
Transpose type for expression template evaluations.
Definition: SVecScalarMultExpr.h:160
RightOperand rightOperand() const noexcept
Returns the right-hand side scalar operand.
Definition: SVecScalarMultExpr.h:439
ConstIterator end() const
Returns an iterator just past the last non-zero element of the sparse vector.
Definition: SVecScalarMultExpr.h:363
bool isAliased(const T *alias) const noexcept
Returns whether the expression is aliased with the given address alias.
Definition: SVecScalarMultExpr.h:463
static constexpr bool smpAssignable
Compilation switch for the expression template assignment strategy.
Definition: SVecScalarMultExpr.h:178
ConstIterator upperBound(size_t index) const
Returns an iterator to the first index greater then the given index.
Definition: SVecScalarMultExpr.h:418
static constexpr bool returnExpr
Compilation switch for the selection of the subscript operator return type.
Definition: SVecScalarMultExpr.h:114
If_t< IsExpression_v< VT >, const VT, const VT & > LeftOperand
Composite type of the left-hand side sparse vector expression.
Definition: SVecScalarMultExpr.h:170
If_t< useAssign, const ResultType, const SVecScalarMultExpr & > CompositeType
Data type for composite expression templates.
Definition: SVecScalarMultExpr.h:167
Base class for sparse vectors.
Definition: SparseVector.h:72
Index-value-pair for sparse vectors and matrices.
Definition: ValueIndexPair.h:75
Constraint on the data type.
Constraint on the data type.
Header file for the Computation base class.
Header file for the SparseVector base class.
Header file for the VecScalarMultExpr base class.
#define BLAZE_CONSTRAINT_MUST_BE_SAME_TYPE(A, B)
Data type constraint.
Definition: SameType.h:71
decltype(auto) serial(const DenseMatrix< MT, SO > &dm)
Forces the serial evaluation of the given dense matrix expression dm.
Definition: DMatSerialExpr.h:812
decltype(auto) inv(const DenseMatrix< MT, SO > &dm)
Calculation of the inverse of the given dense matrix.
Definition: DMatInvExpr.h:405
bool isZero(const DenseMatrix< MT, SO > &dm)
Checks if the given dense matrix is a zero matrix.
Definition: DenseMatrix.h:1819
decltype(auto) length(const DenseVector< VT, TF > &dv)
Calculation of the length (magnitude) of the dense vector .
Definition: DVecNormExpr.h:654
#define BLAZE_CONSTRAINT_MUST_NOT_REQUIRE_EVALUATION(T)
Constraint on the data type.
Definition: RequiresEvaluation.h:81
#define BLAZE_CONSTRAINT_MUST_BE_VECTOR_WITH_TRANSPOSE_FLAG(T, TF)
Constraint on the data type.
Definition: TransposeFlag.h:63
#define BLAZE_CONSTRAINT_MUST_NOT_BE_ZERO_TYPE(T)
Constraint on the data type.
Definition: Zero.h:81
#define BLAZE_CONSTRAINT_MUST_BE_SPARSE_VECTOR_TYPE(T)
Constraint on the data type.
Definition: SparseVector.h:61
#define BLAZE_CONSTRAINT_MUST_BE_SCALAR_TYPE(T)
Constraint on the data type.
Definition: Scalar.h:61
#define BLAZE_CONSTRAINT_MUST_BE_ZERO_TYPE(T)
Constraint on the data type.
Definition: Zero.h:61
typename MultTrait< T1, T2 >::Type MultTrait_t
Auxiliary alias declaration for the MultTrait class template.
Definition: MultTrait.h:165
typename UnderlyingBuiltin< T >::Type UnderlyingBuiltin_t
Auxiliary alias declaration for the UnderlyingBuiltin type trait.
Definition: UnderlyingBuiltin.h:117
#define BLAZE_INTERNAL_ASSERT(expr, msg)
Run time assertion macro for internal checks.
Definition: Assert.h:101
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
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:192
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
typename EnableIf< Condition, T >::Type EnableIf_t
Auxiliary type for the EnableIf class template.
Definition: EnableIf.h:138
constexpr void MAYBE_UNUSED(const Args &...)
Suppression of unused parameter warnings.
Definition: MaybeUnused.h:81
typename If< Condition >::template Type< T1, T2 > If_t
Auxiliary alias template for the If class template.
Definition: If.h:108
#define BLAZE_THROW_OUT_OF_RANGE(MESSAGE)
Macro for the emission of a std::out_of_range exception.
Definition: Exception.h:331
#define BLAZE_FUNCTION_TRACE
Function trace macro.
Definition: FunctionTrace.h:94
Header file for the exception macros of the math module.
Constraint on the data type.
Header file for all forward declarations for expression class templates.
Header file for the isZero shim.
Header file for the serial shim.
Base class for all compute expression templates.
Definition: Computation.h:68
Base class for all vector/scalar multiplication expression templates.
Definition: VecScalarMultExpr.h:76
Header file for the IsZero type trait.
Header file for the RequiresEvaluation type trait.
Header file for basic type definitions.