Teko  Version of the Day
Teko_BlockLowerTriInverseOp.hpp
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46 
47 #ifndef __Teko_BlockLowerTriInverseOp_hpp__
48 #define __Teko_BlockLowerTriInverseOp_hpp__
49 
50 #include "Teko_Utilities.hpp"
51 #include "Teko_BlockImplicitLinearOp.hpp"
52 
53 namespace Teko {
54 
64 public:
74  BlockLowerTriInverseOp(BlockedLinearOp & L,const std::vector<LinearOp> & invDiag);
75 
77 
78 
80  virtual VectorSpace range() const { return productRange_; }
81 
83  virtual VectorSpace domain() const { return productDomain_; }
84 
97  virtual void implicitApply(const BlockedMultiVector & x, BlockedMultiVector & y,
98  const double alpha = 1.0, const double beta = 0.0) const;
100 
101  virtual void describe(Teuchos::FancyOStream &out_arg,
102  const Teuchos::EVerbosityLevel verbLevel) const;
103 
104 protected:
105  // fundamental operators to use
106  const BlockedLinearOp L_;
107  std::vector<LinearOp> invDiag_;
108 
109  Teuchos::RCP<const Thyra::ProductVectorSpaceBase<double> > productRange_;
110  Teuchos::RCP<const Thyra::ProductVectorSpaceBase<double> > productDomain_;
111 
112  // scratch space...so we don't have to reallocate
113  mutable BlockedMultiVector srcScrap_;
114  mutable BlockedMultiVector dstScrap_;
115 
116 private:
117  // hide me!
120 };
121 
122 inline LinearOp createBlockLowerTriInverseOp(BlockedLinearOp & U,const std::vector<LinearOp> & invDiag)
123 {
124  return Teuchos::rcp(new BlockLowerTriInverseOp(U,invDiag));
125 }
126 
127 inline LinearOp createBlockLowerTriInverseOp(BlockedLinearOp & L,const std::vector<LinearOp> & invDiag,const std::string & str)
128 {
129  Teuchos::RCP<Thyra::LinearOpBase<double> > result = Teuchos::rcp(new BlockLowerTriInverseOp(L,invDiag));
130  result->setObjectLabel(str);
131 
132  return result;
133 }
134 
135 } // end namespace Teko
136 
137 #endif
virtual VectorSpace domain() const
Domain space of this operator.
const BlockedLinearOp L_
operator
Teuchos::RCP< const Thyra::ProductVectorSpaceBase< double > > productDomain_
Domain vector space.
virtual void implicitApply(const BlockedMultiVector &x, BlockedMultiVector &y, const double alpha=1.0, const double beta=0.0) const
Perform a matrix vector multiply with this operator.
std::vector< LinearOp > invDiag_
(Approximate) Inverses of the diagonal operators
A virtual class that simplifies the construction of custom operators.
This linear operator computes the inverse of a lower triangular matrix.
Teuchos::RCP< const Thyra::ProductVectorSpaceBase< double > > productRange_
Range vector space.
virtual VectorSpace range() const
Range space of this operator.