pal.math
Interface MFWithGradient

All Superinterfaces:

MultivariateFunction

public interface MFWithGradient
extends MultivariateFunction

interface for a function of several variables with a gradient

Version:

$Id: MFWithGradient.java,v 1.2 2001/07/13 14:39:13 korbinian Exp $

Author:

Korbinian Strimmer

Method Summary

void	computeGradient(double[] argument, double[] gradient) compute gradient at a point
double	evaluate(double[] argument, double[] gradient) compute both function value and gradient at a point

Methods inherited from interface pal.math.MultivariateFunction

evaluate, getLowerBound, getNumArguments, getOrthogonalHints, getUpperBound

Method Detail

evaluate

double evaluate(double[] argument,
                double[] gradient)

compute both function value and gradient at a point

Parameters:

argument - function argument (vector)

gradient - gradient (on return)

Returns:

function value

computeGradient

void computeGradient(double[] argument,
                     double[] gradient)

compute gradient at a point

Parameters:

argument - function argument (vector)

gradient - gradient (on return)