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ClpConstraintQuadratic.hpp
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1 /* $Id: ClpConstraintQuadratic.hpp 2385 2019-01-06 19:43:06Z unxusr $ */
2 // Copyright (C) 2007, International Business Machines
3 // Corporation and others. All Rights Reserved.
4 // This code is licensed under the terms of the Eclipse Public License (EPL).
5 
6 #ifndef ClpConstraintQuadratic_H
7 #define ClpConstraintQuadratic_H
8 
9 #include "ClpConstraint.hpp"
10 
11 //#############################################################################
12 
18 
19 public:
21 
22 
29  virtual int gradient(const ClpSimplex *model,
30  const double *solution,
31  double *gradient,
32  double &functionValue,
33  double &offset,
34  bool useScaling = false,
35  bool refresh = true) const;
37  virtual void resize(int newNumberColumns);
39  virtual void deleteSome(int numberToDelete, const int *which);
41  virtual void reallyScale(const double *columnScale);
45  virtual int markNonlinear(char *which) const;
49  virtual int markNonzero(char *which) const;
51 
53 
56 
58  ClpConstraintQuadratic(int row, int numberQuadraticColumns, int numberColumns,
59  const CoinBigIndex *start,
60  const int *column, const double *element);
61 
65 
68 
70  virtual ~ClpConstraintQuadratic();
71 
73  virtual ClpConstraint *clone() const;
75 
77  virtual int numberCoefficients() const;
80  inline int numberColumns() const
81  {
82  return numberColumns_;
83  }
85  inline CoinBigIndex *start() const
86  {
87  return start_;
88  }
90  inline const int *column() const
91  {
92  return column_;
93  }
95  inline const double *coefficient() const
96  {
97  return coefficient_;
98  }
100 
101  //---------------------------------------------------------------------------
102 
103 private:
108  int *column_;
110  double *coefficient_;
118 };
119 
120 #endif
121 
122 /* vi: softtabstop=2 shiftwidth=2 expandtab tabstop=2
123 */
double offset() const
Constraint offset.
ClpConstraintQuadratic()
Default Constructor.
int numberCoefficients_
Number of coefficients in gradient.
int * column_
Column (if -1 then linear coefficient)
Constraint Abstract Base Class.
virtual void resize(int newNumberColumns)
Resize constraint.
virtual ClpConstraint * clone() const
Clone.
virtual int markNonzero(char *which) const
Given a zeroed array sets possible nonzero coefficients to 1.
double functionValue() const
Stored constraint function value.
virtual void deleteSome(int numberToDelete, const int *which)
Delete columns in constraint.
virtual ~ClpConstraintQuadratic()
Destructor.
const double * coefficient() const
Coefficients.
int numberQuadraticColumns_
Number of quadratic columns.
This solves LPs using the simplex method.
Definition: ClpSimplex.hpp:106
virtual int markNonlinear(char *which) const
Given a zeroed array sets nonquadratic columns to 1.
int numberColumns_
Useful to have number of columns about.
double * coefficient_
Coefficients.
int numberColumns() const
Number of columns in constraint.
const int * column() const
Columns.
virtual void reallyScale(const double *columnScale)
Scale constraint.
CoinBigIndex * start() const
Column starts.
int CoinBigIndex
virtual int numberCoefficients() const
Number of coefficients.
ClpConstraintQuadratic & operator=(const ClpConstraintQuadratic &rhs)
Assignment operator.
virtual int gradient(const ClpSimplex *model, const double *solution, double *gradient, double &functionValue, double &offset, bool useScaling=false, bool refresh=true) const
Fills gradient.
Quadratic Constraint Class.