org.gersteinlab.regulation.numeric
Class DoublyDifferentiableFunction

java.lang.Object
  org.gersteinlab.regulation.numeric.Function
      org.gersteinlab.regulation.numeric.DifferentiableFunction
          org.gersteinlab.regulation.numeric.DoublyDifferentiableFunction

Direct Known Subclasses:

Polynomial

public abstract class DoublyDifferentiableFunction
extends DifferentiableFunction

        A class that represents a doubly differentiable univariate real
        function. Each inherited class should implement at least one of
        d2f(double) and d2f().
        

Version:

1.0 (August 29, 2008)

        Change History:
        1.0     - Initial version
        

Author:

Kevin Yuk-Lap Yip

Field Summary

Fields inherited from class org.gersteinlab.regulation.numeric.Function

xStored

Constructor Summary

DoublyDifferentiableFunction()

Method Summary

double	d2f() Evaluate the second derivative of the function at the stored point.
double	d2f(double x) Evaluate the second derivative of the function at a point.

Methods inherited from class org.gersteinlab.regulation.numeric.DifferentiableFunction

df, df

Methods inherited from class org.gersteinlab.regulation.numeric.Function

f, f, set

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DoublyDifferentiableFunction

public DoublyDifferentiableFunction()

Method Detail

d2f

public double d2f(double x)

Evaluate the second derivative of the function at a point.

Parameters:

x - The point

Returns:

The second derivative of the function at the point

d2f

public double d2f()

Evaluate the second derivative of the function at the stored point.

Returns:

The second derivative of the function at the point