/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.analytics.math.rootfinding.newton;
import com.opengamma.analytics.math.linearalgebra.Decomposition;
import com.opengamma.analytics.math.linearalgebra.LUDecompositionCommons;
/**
* Attempts to find the multi-dimensional root of a series of N equations with N variables, i.e. a square problem.
* If the analytic Jacobian is not known, it will be calculated using central difference
*/
public class NewtonDefaultVectorRootFinder extends NewtonVectorRootFinder {
private static final double DEF_TOL = 1e-7;
private static final int MAX_STEPS = 100;
public NewtonDefaultVectorRootFinder() {
this(DEF_TOL, DEF_TOL, MAX_STEPS);
}
public NewtonDefaultVectorRootFinder(final double absoluteTol, final double relativeTol, final int maxSteps) {
this(absoluteTol, relativeTol, maxSteps, new LUDecompositionCommons());
}
// final NewtonRootFinderDirectionFunction directionFunction,
// final NewtonRootFinderMatrixInitializationFunction initializationFunction, final NewtonRootFinderMatrixUpdateFunction updateFunction
public NewtonDefaultVectorRootFinder(final double absoluteTol, final double relativeTol, final int maxSteps, final Decomposition<?> decomp) {
super(absoluteTol, relativeTol, maxSteps, new JacobianDirectionFunction(decomp), new JacobianEstimateInitializationFunction(), new NewtonDefaultUpdateFunction());
}
}