com.singularsys.jep.functions
Class NaturalLogarithm

java.lang.Object
  extended by com.singularsys.jep.functions.PostfixMathCommand
      extended by com.singularsys.jep.functions.NaturalLogarithm
All Implemented Interfaces:
PostfixMathCommandI, java.io.Serializable

public class NaturalLogarithm
extends PostfixMathCommand

Natural logarithm. For positive Double arguments returns a Double: Math.log(value). For negative Double arguments convert to Complex and return the Complex log: Complex(Math.log(Math.abs(value)),Math.PI) For Complex find the complex logarithm: Complex(Math.log(Math.abs(value)),arg(value))

See Also:
StrictNaturalLogarithm, Serialized Form

Field Summary
 
Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand
curNumberOfParameters, numberOfParameters
 
Constructor Summary
NaturalLogarithm()
           
 
Method Summary
 java.lang.Object ln(java.lang.Object param)
           
 void run(java.util.Stack<java.lang.Object> inStack)
          Run the function on the stack.
 
Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand
checkNumberOfParameters, checkStack, getNumberOfParameters, setCurNumberOfParameters
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NaturalLogarithm

public NaturalLogarithm()
Method Detail

run

public void run(java.util.Stack<java.lang.Object> inStack)
         throws EvaluationException
Description copied from interface: PostfixMathCommandI
Run the function on the stack. Pops the arguments from the stack, and pushes the result on the top of the stack.

Throws:
EvaluationException

ln

public java.lang.Object ln(java.lang.Object param)
                    throws EvaluationException
Throws:
EvaluationException


Copyright © 2007 Singular Systems http://www.singularsys.com/jep