com.singularsys.extensions.xjep

Class ExtractEqn

java.lang.Object

com.singularsys.jep.functions.PostfixMathCommand

com.singularsys.extensions.xjep.ExtractEqn

All Implemented Interfaces:

CommandVisitorI, PostfixMathCommandI, java.io.Serializable

public class ExtractEqn
extends PostfixMathCommand
implements CommandVisitorI

Extracts the equation of a symbolic variable

 y := (x - 1)^2
 expand(eqn(y))
 

Will return x*(x+1.0)*(x-1.0).

See Also:

CommandVisitorI, SubstitutionVisitor, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected EquationExtractor	ee

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

Constructors

Constructor and Description
ExtractEqn(XJep xjep)

Method Summary

Modifier and Type	Method and Description
Node	process(Node node, Node[] children) Performs the specified action on an expression tree.

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, getName, getNumberOfParameters, run, setCurNumberOfParameters, setName, toString, toString

Methods inherited from class java.lang.Object

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

Field Detail

ee

protected EquationExtractor ee

Constructor Detail

ExtractEqn

public ExtractEqn(XJep xjep)

Method Detail

process

public Node process(Node node,
                    Node[] children)
             throws ParseException

Description copied from interface: CommandVisitorI

Performs the specified action on an expression tree.

Specified by:

process in interface CommandVisitorI

Parameters:

node - top node of the tree

children - the children of the node after they have been preprocessed.

Returns:

top node of the results.

Throws:

ParseException