Class FastEvaluator

java.lang.Object

jmva.eval.FastEvaluator

All Implemented Interfaces:

Evaluator

public class FastEvaluator
extends Object
implements Evaluator

Name: FastEvaluator

Description: Evaluates given expression using my java fast expression evaluator.

Date: 09/dic/06 Time: 10:38:30

Version:

1.0

Author:

Bertoli Marco

Constructor Summary

Constructors

Constructor	Description
FastEvaluator()

Method Summary

Modifier and Type	Method	Description
double	evaluate(String expression, double x)
double[]	evaluate(String expression, double[] x)
void	evaluate(String expression, double[] x, double[] y)	evaluates x[0]..x[n] into an user-supplied array y.
URL	getHelpURL()

Methods inherited from class Object

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

Constructor Details

FastEvaluator

public FastEvaluator()

Method Details

evaluate

public double evaluate(String expression,
 double x)
                throws ExpressionParseException

Specified by:

evaluate in interface Evaluator

Returns:

the value of the expression evaluated in x

Throws:

ExpressionParseException - if there were errors while parsing the expression

evaluate

public double[] evaluate(String expression,
 double[] x)
                  throws ExpressionParseException

Specified by:

evaluate in interface Evaluator

Returns:

the values of the expression evaluated in x[0]..x[n]

Throws:

ExpressionParseException - if there were errors while parsing the expression

evaluate

public void evaluate(String expression,
 double[] x,
 double[] y)
              throws ExpressionParseException

Description copied from interface: Evaluator

evaluates x[0]..x[n] into an user-supplied array y. Useful to minimize object creation.

Specified by:

evaluate in interface Evaluator

Throws:

ExpressionParseException - if there were errors while parsing the expression

getHelpURL

public URL getHelpURL()

Specified by:

getHelpURL in interface Evaluator

Returns:

a help URL for this evaluator