net.sourceforge.jeval.function.math
Class Acos

java.lang.Object
  extended by net.sourceforge.jeval.function.math.Acos
All Implemented Interfaces:
Function

public class Acos
extends java.lang.Object
implements Function

This class is a function that executes within Evaluator. The function returns the arc cosine of an angle. See the Math.ceil(double) method in the JDK for a complete description of how this function works.


Constructor Summary
Acos()
           
 
Method Summary
 java.lang.String execute(Evaluator evaluator, java.lang.String arguments)
          Executes the function for the specified argument.
 java.lang.String getName()
          Returns the name of the function - "acos".
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Acos

public Acos()
Method Detail

getName

public java.lang.String getName()
Returns the name of the function - "acos".

Specified by:
getName in interface Function
Returns:
The name of this function class.

execute

public java.lang.String execute(Evaluator evaluator,
                                java.lang.String arguments)
                         throws FunctionException
Executes the function for the specified argument. This method is called internally by Evaluator.

Specified by:
execute in interface Function
Parameters:
evaluator - An instance of Evaluator.
arguments - A string argument that will be converted to a double value and evaluated.
Returns:
The arc cosine value of the argument.
Throws:
FunctionException - Thrown if the argument(s) are not valid for this function.


Copyright (C) 2002-2007 Robert Breidecker.