SVecDVecDivExpr.h
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1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_EXPRESSIONS_SVECDVECDIVEXPR_H_
36 #define _BLAZE_MATH_EXPRESSIONS_SVECDVECDIVEXPR_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
43 #include <iterator>
44 #include <utility>
45 #include <blaze/math/Aliases.h>
52 #include <blaze/math/Exception.h>
57 #include <blaze/math/shims/Reset.h>
66 #include <blaze/util/Assert.h>
67 #include <blaze/util/EnableIf.h>
69 #include <blaze/util/mpl/If.h>
70 #include <blaze/util/mpl/Maximum.h>
71 #include <blaze/util/Types.h>
73 #include <blaze/util/Unused.h>
74 
75 
76 namespace blaze {
77 
78 //=================================================================================================
79 //
80 // CLASS SVECDVECDIVEXPR
81 //
82 //=================================================================================================
83 
84 //*************************************************************************************************
91 template< typename VT1 // Type of the left-hand side sparse vector
92  , typename VT2 // Type of the right-hand side dense vector
93  , bool TF > // Transpose flag
94 class SVecDVecDivExpr
95  : public VecVecDivExpr< SparseVector< SVecDVecDivExpr<VT1,VT2,TF>, TF > >
96  , private Computation
97 {
98  private:
99  //**Type definitions****************************************************************************
106  //**********************************************************************************************
107 
108  //**Return type evaluation**********************************************************************
110 
115  static constexpr bool returnExpr = ( !IsTemporary_v<RN1> && !IsTemporary_v<RN2> );
116 
118  using ExprReturnType = decltype( std::declval<RN1>() / std::declval<RN2>() );
119  //**********************************************************************************************
120 
121  //**Evaluation strategy*************************************************************************
123 
129  static constexpr bool useAssign = ( RequiresEvaluation_v<VT1> || RequiresEvaluation_v<VT2> );
130 
132  template< typename VT >
134  static constexpr bool UseAssign_v = useAssign;
136  //**********************************************************************************************
137 
138  public:
139  //**Type definitions****************************************************************************
145 
148 
151 
153  using LeftOperand = If_t< IsExpression_v<VT1>, const VT1, const VT1& >;
154 
156  using RightOperand = If_t< IsExpression_v<VT2>, const VT2, const VT2& >;
157  //**********************************************************************************************
158 
159  //**Compilation flags***************************************************************************
161  static constexpr bool smpAssignable = false;
162  //**********************************************************************************************
163 
164  //**ConstIterator class definition**************************************************************
168  {
169  public:
170  //**Type definitions*************************************************************************
173 
176 
177  using IteratorCategory = std::forward_iterator_tag;
182 
183  // STL iterator requirements
189  //*******************************************************************************************
190 
191  //**Constructor******************************************************************************
195  : it_ ( it ) // Iterator over the elements of the left-hand side sparse vector expression
196  , vec_( vec ) // Right-hand side dense vector expression
197  {}
198  //*******************************************************************************************
199 
200  //**Prefix increment operator****************************************************************
206  ++it_;
207  return *this;
208  }
209  //*******************************************************************************************
210 
211  //**Element access operator******************************************************************
216  inline const Element operator*() const {
217  return Element( it_->value() / vec_[it_->index()], it_->index() );
218  }
219  //*******************************************************************************************
220 
221  //**Element access operator******************************************************************
226  inline const ConstIterator* operator->() const {
227  return this;
228  }
229  //*******************************************************************************************
230 
231  //**Value function***************************************************************************
236  inline ReturnType value() const {
237  return it_->value() / vec_[it_->index()];
238  }
239  //*******************************************************************************************
240 
241  //**Index function***************************************************************************
246  inline size_t index() const {
247  return it_->index();
248  }
249  //*******************************************************************************************
250 
251  //**Equality operator************************************************************************
257  inline bool operator==( const ConstIterator& rhs ) const {
258  return it_ == rhs.it_;
259  }
260  //*******************************************************************************************
261 
262  //**Inequality operator**********************************************************************
268  inline bool operator!=( const ConstIterator& rhs ) const {
269  return it_ != rhs.it_;
270  }
271  //*******************************************************************************************
272 
273  //**Subtraction operator*********************************************************************
279  inline DifferenceType operator-( const ConstIterator& rhs ) const {
280  return it_ - rhs.it_;
281  }
282  //*******************************************************************************************
283 
284  private:
285  //**Member variables*************************************************************************
288  //*******************************************************************************************
289  };
290  //**********************************************************************************************
291 
292  //**Constructor*********************************************************************************
298  explicit inline SVecDVecDivExpr( const VT1& lhs, const VT2& rhs ) noexcept
299  : lhs_( lhs ) // Left-hand side sparse vector of the division expression
300  , rhs_( rhs ) // Right-hand side dense vector of the division expression
301  {
302  BLAZE_INTERNAL_ASSERT( lhs.size() == rhs.size(), "Invalid vector sizes" );
303  }
304  //**********************************************************************************************
305 
306  //**Subscript operator**************************************************************************
312  inline ReturnType operator[]( size_t index ) const {
313  BLAZE_INTERNAL_ASSERT( index < lhs_.size(), "Invalid vector access index" );
314  return lhs_[index] / rhs_[index];
315  }
316  //**********************************************************************************************
317 
318  //**At function*********************************************************************************
325  inline ReturnType at( size_t index ) const {
326  if( index >= lhs_.size() ) {
327  BLAZE_THROW_OUT_OF_RANGE( "Invalid vector access index" );
328  }
329  return (*this)[index];
330  }
331  //**********************************************************************************************
332 
333  //**Begin function******************************************************************************
338  inline ConstIterator begin() const {
339  return ConstIterator( lhs_.begin(), rhs_ );
340  }
341  //**********************************************************************************************
342 
343  //**End function********************************************************************************
348  inline ConstIterator end() const {
349  return ConstIterator( lhs_.end(), rhs_ );
350  }
351  //**********************************************************************************************
352 
353  //**Size function*******************************************************************************
358  inline size_t size() const noexcept {
359  return rhs_.size();
360  }
361  //**********************************************************************************************
362 
363  //**NonZeros function***************************************************************************
368  inline size_t nonZeros() const {
369  return lhs_.nonZeros();
370  }
371  //**********************************************************************************************
372 
373  //**Find function*******************************************************************************
379  inline ConstIterator find( size_t index ) const {
381  return ConstIterator( lhs_.find( index ), rhs_ );
382  }
383  //**********************************************************************************************
384 
385  //**LowerBound function*************************************************************************
391  inline ConstIterator lowerBound( size_t index ) const {
393  return ConstIterator( lhs_.lowerBound( index ), rhs_ );
394  }
395  //**********************************************************************************************
396 
397  //**UpperBound function*************************************************************************
403  inline ConstIterator upperBound( size_t index ) const {
405  return ConstIterator( lhs_.upperBound( index ), rhs_ );
406  }
407  //**********************************************************************************************
408 
409  //**Left operand access*************************************************************************
414  inline LeftOperand leftOperand() const noexcept {
415  return lhs_;
416  }
417  //**********************************************************************************************
418 
419  //**Right operand access************************************************************************
424  inline RightOperand rightOperand() const noexcept {
425  return rhs_;
426  }
427  //**********************************************************************************************
428 
429  //**********************************************************************************************
435  template< typename T >
436  inline bool canAlias( const T* alias ) const noexcept {
437  return ( lhs_.canAlias( alias ) ) || ( rhs_.canAlias( alias ) );
438  }
439  //**********************************************************************************************
440 
441  //**********************************************************************************************
447  template< typename T >
448  inline bool isAliased( const T* alias ) const noexcept {
449  return ( lhs_.isAliased( alias ) ) || ( rhs_.isAliased( alias ) );
450  }
451  //**********************************************************************************************
452 
453  private:
454  //**Member variables****************************************************************************
457  //**********************************************************************************************
458 
459  //**Assignment to dense vectors*****************************************************************
473  template< typename VT > // Type of the target dense vector
474  friend inline auto assign( DenseVector<VT,TF>& lhs, const SVecDVecDivExpr& rhs )
476  {
478 
479  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
480 
481  CT1 x( serial( rhs.lhs_ ) ); // Evaluation of the left-hand side sparse vector operand
482  CT2 y( serial( rhs.rhs_ ) ); // Evaluation of the right-hand side dense vector operand
483 
484  BLAZE_INTERNAL_ASSERT( x.size() == rhs.lhs_.size(), "Invalid vector size" );
485  BLAZE_INTERNAL_ASSERT( y.size() == rhs.rhs_.size(), "Invalid vector size" );
486  BLAZE_INTERNAL_ASSERT( x.size() == (~lhs).size() , "Invalid vector size" );
487 
488  for( auto element=x.begin(); element!=x.end(); ++element )
489  (~lhs)[element->index()] = element->value() / y[element->index()];
490  }
492  //**********************************************************************************************
493 
494  //**Assignment to sparse vectors****************************************************************
508  template< typename VT > // Type of the target sparse vector
509  friend inline auto assign( SparseVector<VT,TF>& lhs, const SVecDVecDivExpr& rhs )
511  {
513 
514  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
515 
516  CT1 x( serial( rhs.lhs_ ) ); // Evaluation of the left-hand side sparse vector operand
517  CT2 y( serial( rhs.rhs_ ) ); // Evaluation of the right-hand side dense vector operand
518 
519  BLAZE_INTERNAL_ASSERT( x.size() == rhs.lhs_.size(), "Invalid vector size" );
520  BLAZE_INTERNAL_ASSERT( y.size() == rhs.rhs_.size(), "Invalid vector size" );
521  BLAZE_INTERNAL_ASSERT( x.size() == (~lhs).size() , "Invalid vector size" );
522 
523  // Final memory allocation (based on the evaluated operands)
524  (~lhs).reserve( x.nonZeros() );
525 
526  // Performing the vector division
527  for( auto element=x.begin(); element!=x.end(); ++element )
528  (~lhs).append( element->index(), element->value() / y[element->index()] );
529  }
531  //**********************************************************************************************
532 
533  //**Addition assignment to dense vectors********************************************************
547  template< typename VT > // Type of the target dense vector
548  friend inline auto addAssign( DenseVector<VT,TF>& lhs, const SVecDVecDivExpr& rhs )
549  -> EnableIf_t< UseAssign_v<VT> >
550  {
552 
553  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
554 
555  CT1 x( serial( rhs.lhs_ ) ); // Evaluation of the left-hand side sparse vector operand
556  CT2 y( serial( rhs.rhs_ ) ); // Evaluation of the right-hand side dense vector operand
557 
558  BLAZE_INTERNAL_ASSERT( x.size() == rhs.lhs_.size(), "Invalid vector size" );
559  BLAZE_INTERNAL_ASSERT( y.size() == rhs.rhs_.size(), "Invalid vector size" );
560  BLAZE_INTERNAL_ASSERT( x.size() == (~lhs).size() , "Invalid vector size" );
561 
562  for( auto element=x.begin(); element!=x.end(); ++element )
563  (~lhs)[element->index()] += element->value() / y[element->index()];
564  }
566  //**********************************************************************************************
567 
568  //**Addition assignment to sparse vectors*******************************************************
569  // No special implementation for the addition assignment to sparse vectors.
570  //**********************************************************************************************
571 
572  //**Subtraction assignment to dense vectors*****************************************************
586  template< typename VT > // Type of the target dense vector
587  friend inline auto subAssign( DenseVector<VT,TF>& lhs, const SVecDVecDivExpr& rhs )
588  -> EnableIf_t< UseAssign_v<VT> >
589  {
591 
592  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
593 
594  CT1 x( serial( rhs.lhs_ ) ); // Evaluation of the left-hand side sparse vector operand
595  CT2 y( serial( rhs.rhs_ ) ); // Evaluation of the right-hand side dense vector operand
596 
597  BLAZE_INTERNAL_ASSERT( x.size() == rhs.lhs_.size(), "Invalid vector size" );
598  BLAZE_INTERNAL_ASSERT( y.size() == rhs.rhs_.size(), "Invalid vector size" );
599  BLAZE_INTERNAL_ASSERT( x.size() == (~lhs).size() , "Invalid vector size" );
600 
601  for( auto element=x.begin(); element!=x.end(); ++element )
602  (~lhs)[element->index()] -= element->value() / y[element->index()];
603  }
605  //**********************************************************************************************
606 
607  //**Subtraction assignment to sparse vectors****************************************************
608  // No special implementation for the subtraction assignment to sparse vectors.
609  //**********************************************************************************************
610 
611  //**Multiplication assignment to dense vectors**************************************************
625  template< typename VT > // Type of the target dense vector
626  friend inline auto multAssign( DenseVector<VT,TF>& lhs, const SVecDVecDivExpr& rhs )
627  -> EnableIf_t< UseAssign_v<VT> >
628  {
630 
631  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
632 
633  CT1 x( serial( rhs.lhs_ ) ); // Evaluation of the left-hand side sparse vector operand
634  CT2 y( serial( rhs.rhs_ ) ); // Evaluation of the right-hand side dense vector operand
635 
636  BLAZE_INTERNAL_ASSERT( x.size() == rhs.lhs_.size(), "Invalid vector size" );
637  BLAZE_INTERNAL_ASSERT( y.size() == rhs.rhs_.size(), "Invalid vector size" );
638  BLAZE_INTERNAL_ASSERT( x.size() == (~lhs).size() , "Invalid vector size" );
639 
640  const auto end( x.end() );
641  auto begin( x.begin() );
642  size_t i( 0UL );
643 
644  for( ; begin!=end; ++begin ) {
645  const size_t index( begin->index() );
646  for( ; i<index; ++i )
647  reset( (~lhs)[i] );
648  (~lhs)[index] *= begin->value() / y[index];
649  ++i;
650  }
651 
652  for( ; i<rhs.size(); ++i )
653  reset( (~lhs)[i] );
654  }
656  //**********************************************************************************************
657 
658  //**Multiplication assignment to sparse vectors*************************************************
659  // No special implementation for the multiplication assignment to sparse vectors.
660  //**********************************************************************************************
661 
662  //**Compile time checks*************************************************************************
671  //**********************************************************************************************
672 };
673 //*************************************************************************************************
674 
675 
676 
677 
678 //=================================================================================================
679 //
680 // GLOBAL BINARY ARITHMETIC OPERATORS
681 //
682 //=================================================================================================
683 
684 //*************************************************************************************************
697 template< typename VT1 // Type of the left-hand side sparse vector
698  , typename VT2 // Type of the right-hand side dense vector
699  , bool TF // Transpose flag
700  , DisableIf_t< IsZero_v<VT1> >* = nullptr >
701 inline const SVecDVecDivExpr<VT1,VT2,TF>
702  svecdvecdiv( const SparseVector<VT1,TF>& lhs, const DenseVector<VT2,TF>& rhs )
703 {
705 
706  BLAZE_INTERNAL_ASSERT( (~lhs).size() == (~rhs).size(), "Invalid vector sizes" );
707 
708  return SVecDVecDivExpr<VT1,VT2,TF>( ~lhs, ~rhs );
709 }
711 //*************************************************************************************************
712 
713 
714 //*************************************************************************************************
727 template< typename VT1 // Type of the left-hand side sparse vector
728  , typename VT2 // Type of the right-hand side dense vector
729  , bool TF // Transpose flag
730  , EnableIf_t< IsZero_v<VT1> >* = nullptr >
731 inline decltype(auto)
732  svecdvecdiv( const SparseVector<VT1,TF>& lhs, const DenseVector<VT2,TF>& rhs )
733 {
735 
736  UNUSED_PARAMETER( rhs );
737 
738  BLAZE_INTERNAL_ASSERT( (~lhs).size() == (~rhs).size(), "Invalid vector sizes" );
739 
740  using ReturnType = const DivTrait_t< ResultType_t<VT1>, ResultType_t<VT2> >;
741 
744 
745  return ReturnType( (~lhs).size() );
746 }
748 //*************************************************************************************************
749 
750 
751 //*************************************************************************************************
777 template< typename VT1 // Type of the left-hand side sparse vector
778  , typename VT2 // Type of the right-hand side dense vector
779  , bool TF > // Transpose flag
780 inline decltype(auto)
781  operator/( const SparseVector<VT1,TF>& lhs, const DenseVector<VT2,TF>& rhs )
782 {
784 
785  if( (~lhs).size() != (~rhs).size() ) {
786  BLAZE_THROW_INVALID_ARGUMENT( "Vector sizes do not match" );
787  }
788 
789  return svecdvecdiv( ~lhs, ~rhs );
790 }
791 //*************************************************************************************************
792 
793 
794 
795 
796 //=================================================================================================
797 //
798 // SIZE SPECIALIZATIONS
799 //
800 //=================================================================================================
801 
802 //*************************************************************************************************
804 template< typename VT1, typename VT2, bool TF >
805 struct Size< SVecDVecDivExpr<VT1,VT2,TF>, 0UL >
806  : public Maximum< Size<VT1,0UL>, Size<VT2,0UL> >
807 {};
809 //*************************************************************************************************
810 
811 } // namespace blaze
812 
813 #endif
#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
Pointer difference type of the Blaze library.
Header file for auxiliary alias declarations.
ReferenceType reference
Reference return type.
Definition: SVecDVecDivExpr.h:187
static constexpr bool returnExpr
Compilation switch for the selection of the subscript operator return type.
Definition: SVecDVecDivExpr.h:115
Header file for the UNUSED_PARAMETER function template.
Header file for the VecVecDivExpr base class.
Header file for basic type definitions.
Header file for the SparseVector base class.
ConstIterator begin() const
Returns an iterator to the first non-zero element of the sparse vector.
Definition: SVecDVecDivExpr.h:338
typename If< Condition, T1, T2 >::Type If_t
Auxiliary alias declaration for the If class template.The If_t alias declaration provides a convenien...
Definition: If.h:109
ReturnType operator[](size_t index) const
Subscript operator for the direct access to the vector elements.
Definition: SVecDVecDivExpr.h:312
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.
typename DivTrait< T1, T2 >::Type DivTrait_t
Auxiliary alias declaration for the DivTrait class template.The DivTrait_t alias declaration provides...
Definition: DivTrait.h:239
ResultType_t< VT1 > RT1
Result type of the left-hand side sparse vector expression.
Definition: SVecDVecDivExpr.h:100
ConstIterator_t< RemoveReference_t< LeftOperand > > IteratorType
Iterator type of the sparse vector expression.
Definition: SVecDVecDivExpr.h:175
If_t< useAssign, const ResultType, const SVecDVecDivExpr &> CompositeType
Data type for composite expression templates.
Definition: SVecDVecDivExpr.h:150
void reset(const DiagonalProxy< MT > &proxy)
Resetting the represented element to the default initial values.
Definition: DiagonalProxy.h:591
DivTrait_t< RT1, RT2 > ResultType
Result type for expression template evaluations.
Definition: SVecDVecDivExpr.h:142
Constraint on the data type.
LeftOperand lhs_
Left-hand side sparse vector of the division expression.
Definition: SVecDVecDivExpr.h:455
Header file for the Computation base class.
Header file for the reset shim.
Constraint on the data type.
Header file for the RequiresEvaluation type trait.
constexpr void UNUSED_PARAMETER(const Args &...)
Suppression of unused parameter warnings.
Definition: Unused.h:81
typename T::ReturnType ReturnType_t
Alias declaration for nested ReturnType type definitions.The ReturnType_t alias declaration provides ...
Definition: Aliases.h:410
RightOperand rhs_
Right-hand side dense vector of the division expression.
Definition: SVecDVecDivExpr.h:456
ConstIterator end() const
Returns an iterator just past the last non-zero element of the sparse vector.
Definition: SVecDVecDivExpr.h:348
typename T::ElementType ElementType_t
Alias declaration for nested ElementType type definitions.The ElementType_t alias declaration provide...
Definition: Aliases.h:170
CompositeType_t< VT1 > CT1
Composite type of the left-hand side sparse vector expression.
Definition: SVecDVecDivExpr.h:104
ReturnType at(size_t index) const
Checked access to the vector elements.
Definition: SVecDVecDivExpr.h:325
Header file for the Maximum class template.
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
ValueIndexPair< ElementType > Element
Element type of the sparse vector expression.
Definition: SVecDVecDivExpr.h:172
TransposeType_t< ResultType > TransposeType
Transpose type for expression template evaluations.
Definition: SVecDVecDivExpr.h:143
Header file for the ValueIndexPair class.
Header file for the IsTemporary type trait class.
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
Header file for the If class template.
Expression object for sparse vector-dense vector divisions.The SVecDVecDivExpr class represents the c...
Definition: Forward.h:140
#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
#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
const Element * ConstIterator
Iterator over constant elements.
Definition: CompressedMatrix.h:3086
static constexpr bool smpAssignable
Compilation switch for the expression template assignment strategy.
Definition: SVecDVecDivExpr.h:161
bool canAlias(const T *alias) const noexcept
Returns whether the expression can alias with the given address alias.
Definition: SVecDVecDivExpr.h:436
RightOperand vec_
Right-hand side dense vector expression.
Definition: SVecDVecDivExpr.h:287
Base class for N-dimensional dense vectors.The DenseVector class is a base class for all arbitrarily ...
Definition: DenseVector.h:76
std::forward_iterator_tag IteratorCategory
The iterator category.
Definition: SVecDVecDivExpr.h:177
#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
ValueType & ReferenceType
Reference return type.
Definition: SVecDVecDivExpr.h:180
decltype(std::declval< RN1 >()/std::declval< RN2 >()) ExprReturnType
Expression return type for the subscript operator.
Definition: SVecDVecDivExpr.h:118
size_t size() const noexcept
Returns the current size/dimension of the vector.
Definition: SVecDVecDivExpr.h:358
Constraint on the data type.
ConstIterator lowerBound(size_t index) const
Returns an iterator to the first index not less then the given index.
Definition: SVecDVecDivExpr.h:391
ElementType_t< ResultType > ElementType
Resulting element type.
Definition: SVecDVecDivExpr.h:144
If_t< IsExpression_v< VT2 >, const VT2, const VT2 &> RightOperand
Composite type of the right-hand side dense vector expression.
Definition: SVecDVecDivExpr.h:156
Constraint on the data type.
SVecDVecDivExpr(const VT1 &lhs, const VT2 &rhs) noexcept
Constructor for the SVecDVecDivExpr class.
Definition: SVecDVecDivExpr.h:298
const ConstIterator * operator->() const
Direct access to the sparse vector element at the current iterator position.
Definition: SVecDVecDivExpr.h:226
Header file for the exception macros of the math module.
RightOperand rightOperand() const noexcept
Returns the right-hand side dense vector operand.
Definition: SVecDVecDivExpr.h:424
size_t index() const
Access to the current index of the sparse element.
Definition: SVecDVecDivExpr.h:246
Constraint on the data type.
Header file for all forward declarations for expression class templates.
Constraint on the data type.
ReturnType value() const
Access to the current value of the sparse element.
Definition: SVecDVecDivExpr.h:236
const Element operator*() const
Direct access to the sparse vector element at the current iterator position.
Definition: SVecDVecDivExpr.h:216
Header file for the EnableIf class template.
ElementType ValueType
Type of the underlying pointers.
Definition: SVecDVecDivExpr.h:178
ValueType value_type
Type of the underlying pointers.
Definition: SVecDVecDivExpr.h:185
ConstIterator(IteratorType it, RightOperand vec)
Constructor for the ConstIterator class.
Definition: SVecDVecDivExpr.h:194
IteratorType it_
Iterator over the elements of the left-hand side sparse vector expression.
Definition: SVecDVecDivExpr.h:286
ReturnType_t< VT1 > RN1
Return type of the left-hand side sparse vector expression.
Definition: SVecDVecDivExpr.h:102
IteratorCategory iterator_category
The iterator category.
Definition: SVecDVecDivExpr.h:184
ValueType * PointerType
Pointer return type.
Definition: SVecDVecDivExpr.h:179
ResultType_t< VT2 > RT2
Result type of the right-hand side dense vector expression.
Definition: SVecDVecDivExpr.h:101
If_t< IsExpression_v< VT1 >, const VT1, const VT1 &> LeftOperand
Composite type of the left-hand side sparse vector expression.
Definition: SVecDVecDivExpr.h:153
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.
bool operator==(const ConstIterator &rhs) const
Equality comparison between two ConstIterator objects.
Definition: SVecDVecDivExpr.h:257
typename T::CompositeType CompositeType_t
Alias declaration for nested CompositeType type definitions.The CompositeType_t alias declaration pro...
Definition: Aliases.h:90
ReturnType_t< VT2 > RN2
Return type of the right-hand side dense vector expression.
Definition: SVecDVecDivExpr.h:103
Header file for the division trait.
Iterator over the elements of the sparse vector-dense vector division expression. ...
Definition: SVecDVecDivExpr.h:167
ConstIterator & operator++()
Pre-increment operator.
Definition: SVecDVecDivExpr.h:205
Header file for the IsZero type trait.
#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
constexpr size_t size(const Matrix< MT, SO > &matrix) noexcept
Returns the total number of elements of the matrix.
Definition: Matrix.h:530
size_t nonZeros() const
Returns the number of non-zero elements in the sparse vector.
Definition: SVecDVecDivExpr.h:368
ptrdiff_t DifferenceType
Difference between two iterators.
Definition: SVecDVecDivExpr.h:181
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
Header file for the RemoveReference type trait.
ConstIterator find(size_t index) const
Searches for a specific vector element.
Definition: SVecDVecDivExpr.h:379
CompositeType_t< VT2 > CT2
Composite type of the right-hand side dense vector expression.
Definition: SVecDVecDivExpr.h:105
LeftOperand leftOperand() const noexcept
Returns the left-hand side sparse vector operand.
Definition: SVecDVecDivExpr.h:414
typename T::ConstIterator ConstIterator_t
Alias declaration for nested ConstIterator type definitions.The ConstIterator_t alias declaration pro...
Definition: Aliases.h:110
const Type & ReturnType
Return type for expression template evaluations.
Definition: CompressedMatrix.h:3081
#define BLAZE_CONSTRAINT_MUST_BE_DENSE_VECTOR_TYPE(T)
Constraint on the data type.In case the given data type T is not a dense, N-dimensional vector type...
Definition: DenseVector.h:61
Index-value-pair for sparse vectors and matrices.The ValueIndexPair class represents a single index-v...
Definition: ValueIndexPair.h:73
static constexpr bool useAssign
Compilation switch for the evaluation strategy of the division expression.
Definition: SVecDVecDivExpr.h:129
#define BLAZE_CONSTRAINT_MUST_FORM_VALID_VECVECDIVEXPR(T1, T2)
Constraint on the data type.In case the given data types T1 and T2 do not form a valid vector/vector ...
Definition: VecVecDivExpr.h:104
ConstIterator upperBound(size_t index) const
Returns an iterator to the first index greater then the given index.
Definition: SVecDVecDivExpr.h:403
bool operator!=(const ConstIterator &rhs) const
Inequality comparison between two ConstIterator objects.
Definition: SVecDVecDivExpr.h:268
bool isAliased(const T *alias) const noexcept
Returns whether the expression is aliased with the given address alias.
Definition: SVecDVecDivExpr.h:448
Base class for sparse vectors.The SparseVector class is a base class for all arbitrarily sized (N-dim...
Definition: Forward.h:138
DifferenceType operator-(const ConstIterator &rhs) const
Calculating the number of elements between two expression iterators.
Definition: SVecDVecDivExpr.h:279
PointerType pointer
Pointer return type.
Definition: SVecDVecDivExpr.h:186
Header file for the Size 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
const If_t< returnExpr, ExprReturnType, ElementType > ReturnType
Return type for expression template evaluations.
Definition: SVecDVecDivExpr.h:147
#define BLAZE_CONSTRAINT_MUST_BE_VECTOR_WITH_TRANSPOSE_FLAG(T, TF)
Constraint on the data type.In case the given data type T is not a dense or sparse vector type and in...
Definition: TransposeFlag.h:63
#define BLAZE_INTERNAL_ASSERT(expr, msg)
Run time assertion macro for internal checks.In case of an invalid run time expression, the program execution is terminated. The BLAZE_INTERNAL_ASSERT macro can be disabled by setting the BLAZE_USER_ASSERTION flag to zero or by defining NDEBUG during the compilation.
Definition: Assert.h:101
If_t< Less< T1, T2 >::value, T2, T1 > Maximum
Compile time value evaluation.The Maximum alias declaration selects the larger of the two given templ...
Definition: Maximum.h:73
Header file for the IsExpression type trait class.
Header file for the function trace functionality.