org.jscience.mathematics.analysis.expressions.symbolic
Class Abs

java.lang.Object
  org.jscience.mathematics.analysis.expressions.OperatorExpression
      org.jscience.mathematics.analysis.expressions.UnaryOperator
          org.jscience.mathematics.analysis.expressions.symbolic.Abs

All Implemented Interfaces:

java.io.Serializable, Expression, JavaExpressible, XMLExpressible

public class Abs
extends UnaryOperator

Class representing the absolute value of an Expression object.
Example of use:

 Expression e1 = ...;
 Expression e2 = new Abs( e1 );
 




See Also:
UnaryOperator, 
Serialized Form






Field Summary

 
Fields inherited from class org.jscience.mathematics.analysis.expressions.UnaryOperator
deriv, evalValid, evalValue, valid
 
Fields inherited from class org.jscience.mathematics.analysis.expressions.OperatorExpression
firstOperand
 



Constructor Summary
Abs(Expression operand)



          Creates an object that represent the sine of an Expression
 object.
 



Method Summary




 boolean
equals(java.lang.Object e)



          DOCUMENT ME!



 double
eval()



          DOCUMENT ME!



 boolean
isDifferentiable()



          The absolute value function is not differentiable so we
 override the inherited isDifferentiable method.



 boolean
isExpandable()



          DOCUMENT ME!



 Expression
optimize()



          DOCUMENT ME!



 Expression
replace(Expression a,
        Expression b)



          DOCUMENT ME!



 java.lang.String
toJava()



          DOCUMENT ME!



 java.lang.String
toString()



          DOCUMENT ME!



 java.lang.String
toXML()



          DOCUMENT ME!


 
Methods inherited from class org.jscience.mathematics.analysis.expressions.UnaryOperator
diff, getElements, resetNumDiff, resetNumEval, setIndex, setNumberOfIndependents, toTaylorMap
 
Methods inherited from class org.jscience.mathematics.analysis.expressions.OperatorExpression
contains, factor, getFirstOperand, isolate, isolate, setFirstOperand
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 





Constructor Detail



Abs
public Abs(Expression operand)

Creates an object that represent the sine of an Expression
 object.


Parameters:
operand - An Expression object.





Method Detail



eval
public double eval()

DOCUMENT ME!



Returns:
DOCUMENT ME!





replace
public Expression replace(Expression a,
                          Expression b)

DOCUMENT ME!


Parameters:
a - DOCUMENT ME!
b - DOCUMENT ME!
Returns:
DOCUMENT ME!





isDifferentiable
public boolean isDifferentiable()

The absolute value function is not differentiable so we
 override the inherited isDifferentiable method.


Specified by:
isDifferentiable in interface Expression
Overrides:
isDifferentiable in class UnaryOperator


See Also:
Expression.isDifferentiable()





isExpandable
public boolean isExpandable()

DOCUMENT ME!


Specified by:
isExpandable in interface Expression
Overrides:
isExpandable in class UnaryOperator



Returns:
DOCUMENT ME!
See Also:
Expression.isExpandable()





equals
public boolean equals(java.lang.Object e)

DOCUMENT ME!


Overrides:
equals in class java.lang.Object


Parameters:
e - DOCUMENT ME!
Returns:
DOCUMENT ME!





toString
public java.lang.String toString()

DOCUMENT ME!


Overrides:
toString in class java.lang.Object



Returns:
DOCUMENT ME!





toJava
public java.lang.String toJava()

DOCUMENT ME!



Returns:
DOCUMENT ME!





optimize
public Expression optimize()

DOCUMENT ME!



Returns:
DOCUMENT ME!





toXML
public java.lang.String toXML()

DOCUMENT ME!



Returns:
DOCUMENT ME!