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DVecDVecSubExpr.h
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1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_EXPRESSIONS_DVECDVECSUBEXPR_H_
36 #define _BLAZE_MATH_EXPRESSIONS_DVECDVECSUBEXPR_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
43 #include <stdexcept>
50 #include <blaze/math/Intrinsics.h>
60 #include <blaze/util/Assert.h>
62 #include <blaze/util/EnableIf.h>
64 #include <blaze/util/SelectType.h>
65 #include <blaze/util/Types.h>
67 
68 
69 namespace blaze {
70 
71 //=================================================================================================
72 //
73 // CLASS DVECDVECSUBEXPR
74 //
75 //=================================================================================================
76 
77 //*************************************************************************************************
84 template< typename VT1 // Type of the left-hand side dense vector
85  , typename VT2 // Type of the right-hand side dense vector
86  , bool TF > // Transpose flag
87 class DVecDVecSubExpr : public DenseVector< DVecDVecSubExpr<VT1,VT2,TF>, TF >
88  , private VecVecSubExpr
89  , private Computation
90 {
91  private:
92  //**Type definitions****************************************************************************
93  typedef typename VT1::ResultType RT1;
94  typedef typename VT2::ResultType RT2;
95  typedef typename VT1::ReturnType RN1;
96  typedef typename VT2::ReturnType RN2;
97  typedef typename VT1::CompositeType CT1;
98  typedef typename VT2::CompositeType CT2;
99  typedef typename VT1::ElementType ET1;
100  typedef typename VT2::ElementType ET2;
101  //**********************************************************************************************
102 
103  //**Return type evaluation**********************************************************************
105 
110  enum { returnExpr = !IsTemporary<RN1>::value && !IsTemporary<RN2>::value };
111 
114  //**********************************************************************************************
115 
116  //**Serial evaluation strategy******************************************************************
118 
124  enum { useAssign = ( RequiresEvaluation<VT1>::value || RequiresEvaluation<VT2>::value || !returnExpr ) };
125 
127  template< typename VT >
129  struct UseAssign {
130  enum { value = useAssign };
131  };
133  //**********************************************************************************************
134 
135  //**Parallel evaluation strategy****************************************************************
137 
143  template< typename VT >
144  struct UseSMPAssign {
145  enum { value = ( !VT1::smpAssignable || !VT2::smpAssignable ) && useAssign };
146  };
148  //**********************************************************************************************
149 
150  public:
151  //**Type definitions****************************************************************************
157 
160 
163 
165  typedef typename SelectType< IsExpression<VT1>::value, const VT1, const VT1& >::Type LeftOperand;
166 
168  typedef typename SelectType< IsExpression<VT2>::value, const VT2, const VT2& >::Type RightOperand;
169  //**********************************************************************************************
170 
171  //**ConstIterator class definition**************************************************************
175  {
176  public:
177  //**Type definitions*************************************************************************
178  typedef std::random_access_iterator_tag IteratorCategory;
183 
184  // STL iterator requirements
190 
193 
196  //*******************************************************************************************
197 
198  //**Constructor******************************************************************************
204  explicit inline ConstIterator( LeftIteratorType left, RightIteratorType right )
205  : left_ ( left ) // Iterator to the current left-hand side element
206  , right_( right ) // Iterator to the current right-hand side element
207  {}
208  //*******************************************************************************************
209 
210  //**Addition assignment operator*************************************************************
216  inline ConstIterator& operator+=( size_t inc ) {
217  left_ += inc;
218  right_ += inc;
219  return *this;
220  }
221  //*******************************************************************************************
222 
223  //**Subtraction assignment operator**********************************************************
229  inline ConstIterator& operator-=( size_t dec ) {
230  left_ -= dec;
231  right_ -= dec;
232  return *this;
233  }
234  //*******************************************************************************************
235 
236  //**Prefix increment operator****************************************************************
242  ++left_;
243  ++right_;
244  return *this;
245  }
246  //*******************************************************************************************
247 
248  //**Postfix increment operator***************************************************************
253  inline const ConstIterator operator++( int ) {
254  return ConstIterator( left_++, right_++ );
255  }
256  //*******************************************************************************************
257 
258  //**Prefix decrement operator****************************************************************
264  --left_;
265  --right_;
266  return *this;
267  }
268  //*******************************************************************************************
269 
270  //**Postfix decrement operator***************************************************************
275  inline const ConstIterator operator--( int ) {
276  return ConstIterator( left_--, right_-- );
277  }
278  //*******************************************************************************************
279 
280  //**Element access operator******************************************************************
285  inline ReturnType operator*() const {
286  return (*left_) - (*right_);
287  }
288  //*******************************************************************************************
289 
290  //**Load function****************************************************************************
295  inline IntrinsicType load() const {
296  return left_.load() - right_.load();
297  }
298  //*******************************************************************************************
299 
300  //**Equality operator************************************************************************
306  inline bool operator==( const ConstIterator& rhs ) const {
307  return left_ == rhs.left_;
308  }
309  //*******************************************************************************************
310 
311  //**Inequality operator**********************************************************************
317  inline bool operator!=( const ConstIterator& rhs ) const {
318  return left_ != rhs.left_;
319  }
320  //*******************************************************************************************
321 
322  //**Less-than operator***********************************************************************
328  inline bool operator<( const ConstIterator& rhs ) const {
329  return left_ < rhs.left_;
330  }
331  //*******************************************************************************************
332 
333  //**Greater-than operator********************************************************************
339  inline bool operator>( const ConstIterator& rhs ) const {
340  return left_ > rhs.left_;
341  }
342  //*******************************************************************************************
343 
344  //**Less-or-equal-than operator**************************************************************
350  inline bool operator<=( const ConstIterator& rhs ) const {
351  return left_ <= rhs.left_;
352  }
353  //*******************************************************************************************
354 
355  //**Greater-or-equal-than operator***********************************************************
361  inline bool operator>=( const ConstIterator& rhs ) const {
362  return left_ >= rhs.left_;
363  }
364  //*******************************************************************************************
365 
366  //**Subtraction operator*********************************************************************
372  inline DifferenceType operator-( const ConstIterator& rhs ) const {
373  return left_ - rhs.left_;
374  }
375  //*******************************************************************************************
376 
377  //**Addition operator************************************************************************
384  friend inline const ConstIterator operator+( const ConstIterator& it, size_t inc ) {
385  return ConstIterator( it.left_ + inc, it.right_ + inc );
386  }
387  //*******************************************************************************************
388 
389  //**Addition operator************************************************************************
396  friend inline const ConstIterator operator+( size_t inc, const ConstIterator& it ) {
397  return ConstIterator( it.left_ + inc, it.right_ + inc );
398  }
399  //*******************************************************************************************
400 
401  //**Subtraction operator*********************************************************************
408  friend inline const ConstIterator operator-( const ConstIterator& it, size_t dec ) {
409  return ConstIterator( it.left_ - dec, it.right_ - dec );
410  }
411  //*******************************************************************************************
412 
413  private:
414  //**Member variables*************************************************************************
417  //*******************************************************************************************
418  };
419  //**********************************************************************************************
420 
421  //**Compilation flags***************************************************************************
423  enum { vectorizable = VT1::vectorizable && VT2::vectorizable &&
426 
428  enum { smpAssignable = VT1::smpAssignable && VT2::smpAssignable };
429  //**********************************************************************************************
430 
431  //**Constructor*********************************************************************************
437  explicit inline DVecDVecSubExpr( const VT1& lhs, const VT2& rhs )
438  : lhs_( lhs ) // Left-hand side dense vector of the subtraction expression
439  , rhs_( rhs ) // Right-hand side dense vector of the subtraction expression
440  {
441  BLAZE_INTERNAL_ASSERT( lhs.size() == rhs.size(), "Invalid vector sizes" );
442  }
443  //**********************************************************************************************
444 
445  //**Subscript operator**************************************************************************
451  inline ReturnType operator[]( size_t index ) const {
452  BLAZE_INTERNAL_ASSERT( index < lhs_.size(), "Invalid vector access index" );
453  return lhs_[index] - rhs_[index];
454  }
455  //**********************************************************************************************
456 
457  //**Load function*******************************************************************************
463  inline IntrinsicType load( size_t index ) const {
464  typedef IntrinsicTrait<ElementType> IT;
465  BLAZE_INTERNAL_ASSERT( index < lhs_.size() , "Invalid vector access index" );
466  BLAZE_INTERNAL_ASSERT( index % IT::size == 0UL, "Invalid vector access index" );
467  const IntrinsicType xmm1( lhs_.load( index ) );
468  const IntrinsicType xmm2( rhs_.load( index ) );
469  return xmm1 - xmm2;
470  }
471  //**********************************************************************************************
472 
473  //**Begin function******************************************************************************
478  inline ConstIterator begin() const {
479  return ConstIterator( lhs_.begin(), rhs_.begin() );
480  }
481  //**********************************************************************************************
482 
483  //**End function********************************************************************************
488  inline ConstIterator end() const {
489  return ConstIterator( lhs_.end(), rhs_.end() );
490  }
491  //**********************************************************************************************
492 
493  //**Size function*******************************************************************************
498  inline size_t size() const {
499  return lhs_.size();
500  }
501  //**********************************************************************************************
502 
503  //**Left operand access*************************************************************************
508  inline LeftOperand leftOperand() const {
509  return lhs_;
510  }
511  //**********************************************************************************************
512 
513  //**Right operand access************************************************************************
518  inline RightOperand rightOperand() const {
519  return rhs_;
520  }
521  //**********************************************************************************************
522 
523  //**********************************************************************************************
529  template< typename T >
530  inline bool canAlias( const T* alias ) const {
531  return ( IsExpression<VT1>::value && ( RequiresEvaluation<VT1>::value ? lhs_.isAliased( alias ) : lhs_.canAlias( alias ) ) ) ||
532  ( IsExpression<VT2>::value && ( RequiresEvaluation<VT2>::value ? rhs_.isAliased( alias ) : rhs_.canAlias( alias ) ) );
533  }
534  //**********************************************************************************************
535 
536  //**********************************************************************************************
542  template< typename T >
543  inline bool isAliased( const T* alias ) const {
544  return ( lhs_.isAliased( alias ) || rhs_.isAliased( alias ) );
545  }
546  //**********************************************************************************************
547 
548  //**********************************************************************************************
553  inline bool isAligned() const {
554  return lhs_.isAligned() && rhs_.isAligned();
555  }
556  //**********************************************************************************************
557 
558  //**********************************************************************************************
563  inline bool canSMPAssign() const {
564  return lhs_.canSMPAssign() || rhs_.canSMPAssign() ||
566  }
567  //**********************************************************************************************
568 
569  private:
570  //**Member variables****************************************************************************
573  //**********************************************************************************************
574 
575  //**Assignment to dense vectors*****************************************************************
589  template< typename VT > // Type of the target dense vector
590  friend inline typename EnableIf< UseAssign<VT> >::Type
591  assign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
592  {
594 
595  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
596 
597  if( !IsComputation<VT1>::value && isSame( ~lhs, rhs.lhs_ ) ) {
598  subAssign( ~lhs, rhs.rhs_ );
599  }
600  else {
601  assign ( ~lhs, rhs.lhs_ );
602  subAssign( ~lhs, rhs.rhs_ );
603  }
604  }
606  //**********************************************************************************************
607 
608  //**Assignment to sparse vectors****************************************************************
622  template< typename VT > // Type of the target sparse vector
623  friend inline typename EnableIf< UseAssign<VT> >::Type
624  assign( SparseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
625  {
627 
631 
632  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
633 
634  const ResultType tmp( serial( rhs ) );
635  assign( ~lhs, tmp );
636  }
638  //**********************************************************************************************
639 
640  //**Addition assignment to dense vectors********************************************************
654  template< typename VT > // Type of the target dense vector
655  friend inline typename EnableIf< UseAssign<VT> >::Type
656  addAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
657  {
659 
660  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
661 
662  addAssign( ~lhs, rhs.lhs_ );
663  subAssign( ~lhs, rhs.rhs_ );
664  }
666  //**********************************************************************************************
667 
668  //**Addition assignment to sparse vectors*******************************************************
669  // No special implementation for the addition assignment to sparse vectors.
670  //**********************************************************************************************
671 
672  //**Subtraction assignment to dense vectors*****************************************************
686  template< typename VT > // Type of the target dense vector
687  friend inline typename EnableIf< UseAssign<VT> >::Type
688  subAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
689  {
691 
692  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
693 
694  subAssign( ~lhs, rhs.lhs_ );
695  addAssign( ~lhs, rhs.rhs_ );
696  }
698  //**********************************************************************************************
699 
700  //**Subtraction assignment to sparse vectors****************************************************
701  // No special implementation for the subtraction assignment to sparse vectors.
702  //**********************************************************************************************
703 
704  //**Multiplication assignment to dense vectors**************************************************
718  template< typename VT > // Type of the target dense vector
719  friend inline typename EnableIf< UseAssign<VT> >::Type
720  multAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
721  {
723 
727 
728  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
729 
730  const ResultType tmp( serial( rhs ) );
731  multAssign( ~lhs, tmp );
732  }
734  //**********************************************************************************************
735 
736  //**Multiplication assignment to sparse vectors*************************************************
737  // No special implementation for the multiplication assignment to sparse vectors.
738  //**********************************************************************************************
739 
740  //**SMP assignment to dense vectors*************************************************************
754  template< typename VT > // Type of the target dense vector
755  friend inline typename EnableIf< UseSMPAssign<VT> >::Type
756  smpAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
757  {
759 
760  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
761 
762  if( !IsComputation<VT1>::value && isSame( ~lhs, rhs.lhs_ ) ) {
763  smpSubAssign( ~lhs, rhs.rhs_ );
764  }
765  else {
766  smpAssign ( ~lhs, rhs.lhs_ );
767  smpSubAssign( ~lhs, rhs.rhs_ );
768  }
769  }
771  //**********************************************************************************************
772 
773  //**SMP assignment to sparse vectors************************************************************
787  template< typename VT > // Type of the target sparse vector
788  friend inline typename EnableIf< UseSMPAssign<VT> >::Type
789  smpAssign( SparseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
790  {
792 
796 
797  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
798 
799  const ResultType tmp( rhs );
800  smpAssign( ~lhs, tmp );
801  }
803  //**********************************************************************************************
804 
805  //**SMP addition assignment to dense vectors****************************************************
819  template< typename VT > // Type of the target dense vector
820  friend inline typename EnableIf< UseSMPAssign<VT> >::Type
821  smpAddAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
822  {
824 
825  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
826 
827  smpAddAssign( ~lhs, rhs.lhs_ );
828  smpSubAssign( ~lhs, rhs.rhs_ );
829  }
831  //**********************************************************************************************
832 
833  //**SMP addition assignment to sparse vectors***************************************************
834  // No special implementation for the SMP addition assignment to sparse vectors.
835  //**********************************************************************************************
836 
837  //**SMP subtraction assignment to dense vectors*************************************************
851  template< typename VT > // Type of the target dense vector
852  friend inline typename EnableIf< UseSMPAssign<VT> >::Type
853  smpSubAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
854  {
856 
857  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
858 
859  smpSubAssign( ~lhs, rhs.lhs_ );
860  smpAddAssign( ~lhs, rhs.rhs_ );
861  }
863  //**********************************************************************************************
864 
865  //**SMP subtraction assignment to sparse vectors************************************************
866  // No special implementation for the SMP subtraction assignment to sparse vectors.
867  //**********************************************************************************************
868 
869  //**SMP multiplication assignment to dense vectors**********************************************
883  template< typename VT > // Type of the target dense vector
884  friend inline typename EnableIf< UseSMPAssign<VT> >::Type
885  smpMultAssign( DenseVector<VT,TF>& lhs, const DVecDVecSubExpr& rhs )
886  {
888 
892 
893  BLAZE_INTERNAL_ASSERT( (~lhs).size() == rhs.size(), "Invalid vector sizes" );
894 
895  const ResultType tmp( rhs );
896  smpMultAssign( ~lhs, tmp );
897  }
899  //**********************************************************************************************
900 
901  //**SMP multiplication assignment to sparse vectors*********************************************
902  // No special implementation for the SMP multiplication assignment to sparse vectors.
903  //**********************************************************************************************
904 
905  //**Compile time checks*************************************************************************
912  //**********************************************************************************************
913 };
914 //*************************************************************************************************
915 
916 
917 
918 
919 //=================================================================================================
920 //
921 // GLOBAL BINARY ARITHMETIC OPERATORS
922 //
923 //=================================================================================================
924 
925 //*************************************************************************************************
949 template< typename T1 // Type of the left-hand side dense vector
950  , typename T2 // Type of the right-hand side dense vector
951  , bool TF > // Transpose flag
952 inline const DVecDVecSubExpr<T1,T2,TF>
954 {
956 
957  if( (~lhs).size() != (~rhs).size() )
958  throw std::invalid_argument( "Vector sizes do not match" );
959 
960  return DVecDVecSubExpr<T1,T2,TF>( ~lhs, ~rhs );
961 }
962 //*************************************************************************************************
963 
964 
965 
966 
967 //=================================================================================================
968 //
969 // EXPRESSION TRAIT SPECIALIZATIONS
970 //
971 //=================================================================================================
972 
973 //*************************************************************************************************
975 template< typename VT1, typename VT2, bool TF, bool AF >
976 struct SubvectorExprTrait< DVecDVecSubExpr<VT1,VT2,TF>, AF >
977 {
978  public:
979  //**********************************************************************************************
980  typedef typename SubExprTrait< typename SubvectorExprTrait<const VT1,AF>::Type
981  , typename SubvectorExprTrait<const VT2,AF>::Type >::Type Type;
982  //**********************************************************************************************
983 };
985 //*************************************************************************************************
986 
987 } // namespace blaze
988 
989 #endif
ptrdiff_t DifferenceType
Difference between two iterators.
Definition: DVecDVecSubExpr.h:182
RightIteratorType right_
Iterator to the current right-hand side element.
Definition: DVecDVecSubExpr.h:416
PointerType pointer
Pointer return type.
Definition: DVecDVecSubExpr.h:187
Pointer difference type of the Blaze library.
Compile time check whether the given type is a computational expression template.This type trait clas...
Definition: IsComputation.h:89
Compile time check whether the given type is a temporary vector or matrix type.This type trait class ...
Definition: IsTemporary.h:87
ValueType value_type
Type of the underlying elements.
Definition: DVecDVecSubExpr.h:186
Header file for the subtraction trait.
ReferenceType reference
Reference return type.
Definition: DVecDVecSubExpr.h:188
SelectType< IsExpression< VT2 >::value, const VT2, const VT2 & >::Type RightOperand
Composite type of the right-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:168
void smpSubAssign(DenseMatrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the SMP subtraction assignment of a matrix to dense matrix.
Definition: DenseMatrix.h:152
const ConstIterator operator++(int)
Post-increment operator.
Definition: DVecDVecSubExpr.h:253
ReturnType operator[](size_t index) const
Subscript operator for the direct access to the vector elements.
Definition: DVecDVecSubExpr.h:451
Efficient implementation of a compressed matrix.The CompressedMatrix class template is the represent...
Definition: CompressedMatrix.h:199
SelectType< IsExpression< VT1 >::value, const VT1, const VT1 & >::Type LeftOperand
Composite type of the left-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:165
void smpMultAssign(DenseVector< VT1, TF1 > &lhs, const Vector< VT2, TF2 > &rhs)
Default implementation of the SMP multiplication assignment of a vector to a dense vector...
Definition: DenseVector.h:179
Header file for the IsSame and IsStrictlySame type traits.
DVecDVecSubExpr(const VT1 &lhs, const VT2 &rhs)
Constructor for the DVecDVecSubExpr class.
Definition: DVecDVecSubExpr.h:437
VT1::ReturnType RN1
Return type of the left-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:95
friend const ConstIterator operator+(const ConstIterator &it, size_t inc)
Addition between a ConstIterator and an integral value.
Definition: DVecDVecSubExpr.h:384
const This & CompositeType
Data type for composite expression templates.
Definition: CompressedMatrix.h:2408
Type ElementType
Type of the sparse matrix elements.
Definition: CompressedMatrix.h:251
VT2::ReturnType RN2
Return type of the right-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:96
Header file for the DenseVector base class.
VT1::ElementType ET1
Element type of the left-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:99
const DMatSerialExpr< MT, SO > serial(const DenseMatrix< MT, SO > &dm)
Forces the serial evaluation of the given dense matrix expression dm.
Definition: DMatSerialExpr.h:690
Header file for the Computation base class.
Type relationship analysis.This class tests if the two data types A and B are equal. For this type comparison, the cv-qualifiers of both data types are ignored. If A and B are the same data type (ignoring the cv-qualifiers), then the value member enumeration is set to 1, the nested type definition Type is TrueType, and the class derives from TrueType. Otherwise value is set to 0, Type is FalseType, and the class derives from FalseType.
Definition: IsSame.h:158
bool isAligned() const
Returns whether the operands of the expression are properly aligned in memory.
Definition: DVecDVecSubExpr.h:553
Header file for the RequiresEvaluation type trait.
ConstIterator & operator-=(size_t dec)
Subtraction assignment operator.
Definition: DVecDVecSubExpr.h:229
bool isSame(const Matrix< MT1, SO1 > &a, const Matrix< MT2, SO2 > &b)
Returns whether the two given matrices represent the same observable state.
Definition: Matrix.h:409
DVecDVecSubExpr< VT1, VT2, TF > This
Type of this DVecDVecSubExpr instance.
Definition: DVecDVecSubExpr.h:152
ElementType * PointerType
Pointer return type.
Definition: DVecDVecSubExpr.h:180
Constraint on the data type.
friend const ConstIterator operator-(const ConstIterator &it, size_t dec)
Subtraction between a ConstIterator and an integral value.
Definition: DVecDVecSubExpr.h:408
void smpAddAssign(DenseMatrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the SMP addition assignment of a matrix to a dense matrix.
Definition: DenseMatrix.h:122
Compile time check to query the requirement to evaluate an expression.Via this type trait it is possi...
Definition: RequiresEvaluation.h:90
ConstIterator & operator+=(size_t inc)
Addition assignment operator.
Definition: DVecDVecSubExpr.h:216
const This & CompositeType
Data type for composite expression templates.
Definition: CompressedMatrix.h:253
IntrinsicTrait< ElementType >::Type IntrinsicType
Resulting intrinsic element type.
Definition: DVecDVecSubExpr.h:156
ReturnType operator*() const
Direct access to the element at the current iterator position.
Definition: DVecDVecSubExpr.h:285
bool operator<=(const ConstIterator &rhs) const
Less-than comparison between two ConstIterator objects.
Definition: DVecDVecSubExpr.h:350
Compile time type selection.The SelectType class template selects one of the two given types T1 and T...
Definition: SelectType.h:59
bool operator>=(const ConstIterator &rhs) const
Greater-than comparison between two ConstIterator objects.
Definition: DVecDVecSubExpr.h:361
Header file for the IsTemporary type trait class.
IteratorCategory iterator_category
The iterator category.
Definition: DVecDVecSubExpr.h:185
DifferenceType operator-(const ConstIterator &rhs) const
Calculating the number of elements between two iterators.
Definition: DVecDVecSubExpr.h:372
VT1::CompositeType CT1
Composite type of the left-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:97
ConstIterator & operator--()
Pre-decrement operator.
Definition: DVecDVecSubExpr.h:263
const Element * ConstIterator
Iterator over constant elements.
Definition: CompressedMatrix.h:2412
std::random_access_iterator_tag IteratorCategory
The iterator category.
Definition: DVecDVecSubExpr.h:178
Iterator over the elements of the dense vector.
Definition: DVecDVecSubExpr.h:174
ResultType::ElementType ElementType
Resulting element type.
Definition: DVecDVecSubExpr.h:155
bool operator!=(const ConstIterator &rhs) const
Inequality comparison between two ConstIterator objects.
Definition: DVecDVecSubExpr.h:317
DifferenceType difference_type
Difference between two iterators.
Definition: DVecDVecSubExpr.h:189
void assign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the assignment of a matrix to a matrix.
Definition: Matrix.h:271
Base class for N-dimensional dense vectors.The DenseVector class is a base class for all arbitrarily ...
Definition: DenseVector.h:70
const size_t SMP_DVECDVECSUB_THRESHOLD
SMP dense vector/dense vector subtraction threshold.This threshold specifies when a dense vector/dens...
Definition: Thresholds.h:253
SelectType< useAssign, const ResultType, const DVecDVecSubExpr & >::Type CompositeType
Data type for composite expression templates.
Definition: DVecDVecSubExpr.h:162
Constraint on the data type.
ResultType::TransposeType TransposeType
Transpose type for expression template evaluations.
Definition: DVecDVecSubExpr.h:154
#define BLAZE_CONSTRAINT_MUST_BE_REFERENCE_TYPE(T)
Constraint on the data type.In case the given data type T is not a reference type, a compilation error is created.
Definition: Reference.h:78
Constraint on the data type.
VT2::ElementType ET2
Element type of the right-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:100
Evaluation of the return type of a subtraction expression.Via this type trait it is possible to evalu...
Definition: SubExprTrait.h:103
LeftIteratorType left_
Iterator to the current left-hand side element.
Definition: DVecDVecSubExpr.h:415
Type ElementType
Type of the sparse matrix elements.
Definition: CompressedMatrix.h:2406
friend const ConstIterator operator+(size_t inc, const ConstIterator &it)
Addition between an integral value and a ConstIterator.
Definition: DVecDVecSubExpr.h:396
void multAssign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the multiplication assignment of a matrix to a matrix.
Definition: Matrix.h:361
Header file for the VecVecSubExpr base class.
Header file for the SelectType class template.
ConstIterator end() const
Returns an iterator just past the last non-zero element of the dense vector.
Definition: DVecDVecSubExpr.h:488
Header file for all forward declarations for expression class templates.
ConstIterator begin() const
Returns an iterator to the first non-zero element of the dense vector.
Definition: DVecDVecSubExpr.h:478
ElementType ValueType
Type of the underlying elements.
Definition: DVecDVecSubExpr.h:179
Header file for the EnableIf class template.
Header file for the serial shim.
bool canSMPAssign() const
Returns whether the expression can be used in SMP assignments.
Definition: DVecDVecSubExpr.h:563
void smpAssign(DenseMatrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the SMP assignment of a matrix to a dense matrix.
Definition: DenseMatrix.h:92
ConstIterator(LeftIteratorType left, RightIteratorType right)
Constructor for the ConstIterator class.
Definition: DVecDVecSubExpr.h:204
bool operator<(const ConstIterator &rhs) const
Less-than comparison between two ConstIterator objects.
Definition: DVecDVecSubExpr.h:328
VT1::ConstIterator LeftIteratorType
ConstIterator type of the left-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:192
const Type & ReturnType
Return type for expression template evaluations.
Definition: CompressedMatrix.h:2407
Intrinsic characteristics of data types.The IntrinsicTrait class template provides the intrinsic char...
Definition: IntrinsicTrait.h:748
Header file for run time assertion macros.
const SelectType< returnExpr, ExprReturnType, ElementType >::Type ReturnType
Return type for expression template evaluations.
Definition: DVecDVecSubExpr.h:159
void addAssign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the addition assignment of a matrix to a matrix.
Definition: Matrix.h:301
const DenseIterator< Type > operator-(const DenseIterator< Type > &it, ptrdiff_t inc)
Subtraction between a DenseIterator and an integral value.
Definition: DenseIterator.h:585
Substitution Failure Is Not An Error (SFINAE) class.The EnableIf class template is an auxiliary tool ...
Definition: EnableIf.h:184
ElementType & ReferenceType
Reference return type.
Definition: DVecDVecSubExpr.h:181
bool isAliased(const T *alias) const
Returns whether the expression is aliased with the given address alias.
Definition: DVecDVecSubExpr.h:543
ConstIterator & operator++()
Pre-increment operator.
Definition: DVecDVecSubExpr.h:241
void subAssign(Matrix< MT1, SO1 > &lhs, const Matrix< MT2, SO2 > &rhs)
Default implementation of the subtraction assignment of a matrix to matrix.
Definition: Matrix.h:331
SubTrait< RT1, RT2 >::Type ResultType
Result type for expression template evaluations.
Definition: DVecDVecSubExpr.h:153
VT2::ConstIterator RightIteratorType
ConstIterator type of the right-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:195
bool operator==(const ConstIterator &rhs) const
Equality comparison between two ConstIterator objects.
Definition: DVecDVecSubExpr.h:306
IntrinsicType load() const
Access to the intrinsic elements of the vector.
Definition: DVecDVecSubExpr.h:295
RightOperand rhs_
Right-hand side dense vector of the subtraction expression.
Definition: DVecDVecSubExpr.h:572
SubExprTrait< RN1, RN2 >::Type ExprReturnType
Expression return type for the subscript operator.
Definition: DVecDVecSubExpr.h:113
Header file for all intrinsic functionality.
#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:79
VT2::CompositeType CT2
Composite type of the right-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:98
bool canAlias(const T *alias) const
Returns whether the expression can alias with the given address alias.
Definition: DVecDVecSubExpr.h:530
Header file for the IsComputation type trait class.
Base class for all compute expression templates.The Computation class serves as a tag for all computa...
Definition: Computation.h:59
LeftOperand leftOperand() const
Returns the left-hand side dense vector operand.
Definition: DVecDVecSubExpr.h:508
Base class for sparse vectors.The SparseVector class is a base class for all arbitrarily sized (N-dim...
Definition: Forward.h:108
#define BLAZE_FUNCTION_TRACE
Function trace macro.This macro can be used to reliably trace function calls. In case function tracin...
Definition: FunctionTrace.h:157
This ResultType
Result type for expression template evaluations.
Definition: CompressedMatrix.h:2403
VT2::ResultType RT2
Result type of the right-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:94
Header file for basic type definitions.
IntrinsicType load(size_t index) const
Access to the intrinsic elements of the vector.
Definition: DVecDVecSubExpr.h:463
Header file for the SubvectorExprTrait class template.
Base template for the SubTrait class.
Definition: SubTrait.h:141
VT1::ResultType RT1
Result type of the left-hand side dense vector expression.
Definition: DVecDVecSubExpr.h:93
RightOperand rightOperand() const
Returns the right-hand side dense vector operand.
Definition: DVecDVecSubExpr.h:518
Base class for all vector/vector subtraction expression templates.The VecVecSubExpr class serves as a...
Definition: VecVecSubExpr.h:65
LeftOperand lhs_
Left-hand side dense vector of the subtraction expression.
Definition: DVecDVecSubExpr.h:571
const ConstIterator operator--(int)
Post-decrement operator.
Definition: DVecDVecSubExpr.h:275
Header file for the SubExprTrait class template.
size_t size() const
Returns the current size/dimension of the vector.
Definition: DVecDVecSubExpr.h:498
Expression object for dense vector-dense vector subtractions.The DVecDVecSubExpr class represents the...
Definition: DVecDVecSubExpr.h:87
#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:238
Header file for the thresholds for matrix/vector and matrix/matrix multiplications.
bool operator>(const ConstIterator &rhs) const
Greater-than comparison between two ConstIterator objects.
Definition: DVecDVecSubExpr.h:339
#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
Compile time check whether the given type is an expression template.This type trait class tests wheth...
Definition: IsExpression.h:87
Header file for the IsExpression type trait class.
Header file for the FunctionTrace class.