ru.sstu.math.ep
Class Expression

java.lang.Object
  ru.sstu.math.ep.Expression

public final class Expression
extends Object

Expression class holds mathematical expression as tree, can be evaluated, and can be differentiated.

Since:

Math 1.0

Author:

Denis A. Murashev

Method Summary

Expression	derivative(String arg) Differentiates expression.
double	evaluate(Map<String,? extends Number> arg) Evaluates expression.
void	simplify() Simplifies compiled expression.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

evaluate

public double evaluate(Map<String,? extends Number> arg)
                throws org.apache.commons.math.MathException

Evaluates expression.

Parameters:

arg - arguments

Returns:

expression value

Throws:

org.apache.commons.math.MathException - if cannot evaluate expression

simplify

public void simplify()
              throws org.apache.commons.math.MathException

Simplifies compiled expression.

Throws:

org.apache.commons.math.MathException - if some error occurs

derivative

public Expression derivative(String arg)
                      throws org.apache.commons.math.MathException

Differentiates expression.

Parameters:

arg - name of variable

Returns:

derivative

Throws:

org.apache.commons.math.MathException - if some error occurs

toString

public String toString()

Overrides:

toString in class Object