probsysequ01 Class Reference

Test problem. More...

#include <probsysequ01.h>

Collaboration diagram for probsysequ01:

List of all members.

Public Member Functions
	probsysequ01 ()
	~probsysequ01 ()
void	operator() (double &fval)
	Evaluate the function to be minimized.
void	partialderivative (double &val, uintc i, double const h)
	Numerically evaluate the partial derivative.
Public Attributes
uint	counter
	Counts the number of times the function is evaluated.
double *	xi

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Detailed Description

Test problem.

Solve a 2D non linear simultaneous equation.

Definition at line 13 of file probsysequ01.h.

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Constructor & Destructor Documentation

probsysequ01::probsysequ01

(

)

[inline]

Definition at line 22 of file probsysequ01.h.

    : counter(0), xi(new double[2]) {}

probsysequ01::~probsysequ01

(

)

[inline]

Definition at line 24 of file probsysequ01.h.

References xi.

    { delete[] xi; }

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Member Function Documentation

void probsysequ01::operator()

(

double &

fval

)

[inline]

Evaluate the function to be minimized.

Definition at line 29 of file probsysequ01.h.

References counter, and xi.

Referenced by partialderivative().

  {
    double t0 = xi[0]-0.1136*(xi[0]+3.0*xi[1])*(1.0-xi[0]);
    double t1 = xi[1]+7.5*(2.0*xi[0]-xi[1])*(1.0-xi[1]);
    fval = t0*t0 + t1*t1;
//cout << SHOW(fval) << endl;
    ++counter;
  }

void probsysequ01::partialderivative	(	double &	val,
		uintc	i,
		double const	h
	)			[inline]

Numerically evaluate the partial derivative.

Definition at line 42 of file probsysequ01.h.

References operator()(), and xi.

Referenced by exploretest03().

  {
    assert(i<2);
    static double x2[2];

    //Save initial value.
    x2[i] = xi[i];

    xi[i] -= h*0.5;
    double f0;
    operator()(f0);

    double f1;
    xi[i] += h;
    operator()(f1);

    val = (f1-f0)/h;

    // Restore initial value.
    xi[i] = x2[i];
  };

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Member Data Documentation

uint probsysequ01::counter

Counts the number of times the function is evaluated.

Definition at line 18 of file probsysequ01.h.

Referenced by explorepdtest02(), exploretest03(), minimizecomparetest01(), minimizecomparetest02(), operator()(), partialderivativetest01(), and test11().

double* probsysequ01::xi

Definition at line 20 of file probsysequ01.h.

Referenced by operator()(), partialderivative(), and ~probsysequ01().

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The documentation for this class was generated from the following file:

• patternsearch/probsysequ01.h