org.apache.commons.nabla.algorithmic.forward.functions
Class AtanhTransformer

java.lang.Object
  org.apache.commons.nabla.algorithmic.forward.functions.AtanhTransformer

All Implemented Interfaces:

MathInvocationTransformer

public class AtanhTransformer
extends Object
implements MathInvocationTransformer

Differentiation transformer for the atanh function invocation instructions.

As of java 6, the JVM does not supply an inverse hyperbolic tangent function (see bug 4919337), so this generator will not be triggered for java 6 and below.

Field Summary

Fields inherited from interface org.apache.commons.nabla.algorithmic.forward.functions.MathInvocationTransformer

D_RETURN_D_DESCRIPTOR, DD_RETURN_D_DESCRIPTOR

Constructor Summary

AtanhTransformer()

Method Summary

org.objectweb.asm.tree.InsnList

getReplacementList(String owner, MethodDifferentiator methodDifferentiator) Get the replacement list for an invocation instruction.

Methods inherited from class java.lang.Object

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

Constructor Detail

AtanhTransformer

public AtanhTransformer()

Method Detail

getReplacementList

public org.objectweb.asm.tree.InsnList getReplacementList(String owner,
                                                          MethodDifferentiator methodDifferentiator)

Get the replacement list for an invocation instruction.

Specified by:

getReplacementList in interface MathInvocationTransformer

Parameters:

owner - owner of the method (typically Math or StrictMath)

methodDifferentiator - method differentiator driving this transformer

Returns:

replacement list