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IpZeroMatrix.hpp
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1 // Copyright (C) 2004, 2008 International Business Machines and others.
2 // All Rights Reserved.
3 // This code is published under the Eclipse Public License.
4 //
5 // $Id: IpZeroMatrix.hpp 2269 2013-05-05 11:32:40Z stefan $
6 //
7 // Authors: Carl Laird, Andreas Waechter IBM 2004-08-13
8 
9 #ifndef __IPZEROMATRIX_HPP__
10 #define __IPZEROMATRIX_HPP__
11 
12 #include "IpUtils.hpp"
13 #include "IpMatrix.hpp"
14 
15 namespace Ipopt
16 {
17 
20  class ZeroMatrix : public Matrix
21  {
22  public:
23 
26 
29  ZeroMatrix(const MatrixSpace* owner_space);
30 
32  ~ZeroMatrix();
34 
35  protected:
38  virtual void MultVectorImpl(Number alpha, const Vector& x,
39  Number beta, Vector& y) const;
40 
41  virtual void TransMultVectorImpl(Number alpha, const Vector& x,
42  Number beta, Vector& y) const;
43 
44  virtual void ComputeRowAMaxImpl(Vector& rows_norms, bool init) const
45  {}
46 
47  virtual void ComputeColAMaxImpl(Vector& cols_norms, bool init) const
48  {}
49 
50  virtual void PrintImpl(const Journalist& jnlst,
51  EJournalLevel level,
52  EJournalCategory category,
53  const std::string& name,
54  Index indent,
55  const std::string& prefix) const;
57 
58  private:
68  ZeroMatrix();
69 
71  ZeroMatrix(const ZeroMatrix&);
72 
74  void operator=(const ZeroMatrix&);
76  };
77 
80  {
81  public:
86  ZeroMatrixSpace(Index nrows, Index ncols)
87  :
88  MatrixSpace(nrows, ncols)
89  {}
90 
92  virtual ~ZeroMatrixSpace()
93  {}
95 
98  virtual Matrix* MakeNew() const
99  {
100  return MakeNewZeroMatrix();
101  }
102 
105  {
106  return new ZeroMatrix(this);
107  }
108  private:
118  ZeroMatrixSpace();
119 
122 
124  void operator=(const ZeroMatrixSpace&);
126  };
127 } // namespace Ipopt
128 #endif
Number * x
Input: Starting point Output: Optimal solution.
Class for matrix space for ZeroMatrix.
void operator=(const ZeroMatrix &)
Overloaded Equals Operator.
virtual void TransMultVectorImpl(Number alpha, const Vector &x, Number beta, Vector &y) const
Matrix(transpose) vector multiply.
double Number
Type of all numbers.
Definition: IpTypes.hpp:17
Vector Base Class.
Definition: IpVector.hpp:47
virtual void MultVectorImpl(Number alpha, const Vector &x, Number beta, Vector &y) const
Matrix-vector multiply.
EJournalLevel
Print Level Enum.
Class for Matrices with only zero entries.
ZeroMatrix * MakeNewZeroMatrix() const
Method for creating a new matrix of this specific type.
ZeroMatrixSpace(Index nrows, Index ncols)
Constructor, given the number of row and columns.
virtual void PrintImpl(const Journalist &jnlst, EJournalLevel level, EJournalCategory category, const std::string &name, Index indent, const std::string &prefix) const
Print detailed information about the matrix.
Matrix Base Class.
Definition: IpMatrix.hpp:27
virtual void ComputeColAMaxImpl(Vector &cols_norms, bool init) const
Compute the max-norm of the columns in the matrix.
virtual void ComputeRowAMaxImpl(Vector &rows_norms, bool init) const
Compute the max-norm of the rows in the matrix.
ZeroMatrix()
Default Constructor.
MatrixSpace base class, corresponding to the Matrix base class.
Definition: IpMatrix.hpp:239
int Index
Type of all indices of vectors, matrices etc.
Definition: IpTypes.hpp:19
virtual ~ZeroMatrixSpace()
Destructor.
virtual Matrix * MakeNew() const
Overloaded MakeNew method for the MatrixSpace base class.
void operator=(const ZeroMatrixSpace &)
Overloaded Equals Operator.
Class responsible for all message output.
~ZeroMatrix()
Destructor.
EJournalCategory
Category Selection Enum.
ZeroMatrixSpace()
Default Constructor.