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QpBoundVars.h

/* OOQP                                                               *
 * Authors: E. Michael Gertz, Stephen J. Wright                       *
 * (C) 2001 University of Chicago. See Copyright Notification in OOQP */

#ifndef QPBOUNDVARS_H
#define QPBOUNDVARS_H

#include "Variables.h"
#include "OoqpVectorHandle.h"

class QpBound;
class QpBoundData;

class QpBoundVars : public Variables
{
public:
  QpBound * factory;

  OoqpVectorHandle x;

  OoqpVectorHandle t;

  OoqpVectorHandle v;

  OoqpVectorHandle tau;

  OoqpVectorHandle   nu; 
  
  OoqpVectorHandle index_lower;

  OoqpVectorHandle index_upper;

  int nx;

  int nlower;

  int nupper;

  QpBoundVars( QpBound * f, QpBoundData *prob );

  QpBoundVars( QpBound * f, QpBoundData *prob,
               OoqpVector * x, 
               OoqpVector * t,    OoqpVector * v, 
               OoqpVector * tau,  OoqpVector * nu );
  virtual ~QpBoundVars();

  virtual double mu();


  virtual double mustep(Variables *step, double alpha);

  virtual void saxpy( Variables *b, double alpha);

  virtual void negate();

  virtual double findBlocking( Variables * step, 
                               double & primalValue,
                               double & primalStep,
                               double & dualValue,
                               double & dualStep,
                               int& firstOrSecond );
  
  virtual double stepbound( Variables *b);

  virtual void interiorPoint( double alpha, double beta );

  virtual void shiftBoundVariables( double alpha, double beta );

  virtual double violation();


  virtual void print();

  virtual void copy(Variables *b);
  virtual double onenorm();
  virtual double infnorm();
};

enum { no_block = 0,
       t_block = 1,
       tau_block = 2,
       v_block = 3,
       nu_block = 4
};  

#endif

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