math.constants
Class RationalConstant

java.lang.Object
  |
  +--math.objects.Expression
        |
        +--math.objects.Constant
              |
              +--math.constants.RationalConstant

public class RationalConstant

extends Constant

RationalConstant.java: The Rational class provides support for Rational numbers.

Since:

JDK1.2

Version:

1.1

Author:

Peter Staab

, for the Mathematical Visualization Project for the Department of Applied Mathematics, University of Colorado at Boulder

Constructor Summary

RationalConstant()

RationalConstant(long i)

RationalConstant(long i, long j)

Method Summary

boolean	equalsOne()
boolean	equalsZero()
double	evaluate(VariableSet vars, double[] values) A method used to evaluate a Constant object given an ordered variable vector and a corresponding array of constant double values
Expression	evaluateVariables(VariableSet variables, double[] values) A method used to evaluate a Constant object containing multiple variables given only one variable name and one value
long	getDenominator()
long	getNumerator()
java.lang.String	toString()

Methods inherited from class math.objects.Constant

differentiate, simplify

Methods inherited from class math.objects.Expression

evaluate, evaluate, evaluate, evaluate, evaluate

Methods inherited from class java.lang.Object

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

Constructor Detail

RationalConstant

public RationalConstant()

RationalConstant

public RationalConstant(long i)

RationalConstant

public RationalConstant(long i,
                        long j)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getNumerator

public long getNumerator()

getDenominator

public long getDenominator()

equalsZero

public boolean equalsZero()

equalsOne

public boolean equalsOne()

evaluate

public double evaluate(VariableSet vars,
                       double[] values)
                throws java.lang.ArithmeticException,
                       VariableUndefinedException,
                       IllegalEvaluationException

A method used to evaluate a Constant object given an ordered variable vector and a corresponding array of constant double values

Specified by:

evaluate in class Expression

Parameters:

vars - the name of the VariableVector of Variables associated with the function.

Returns:

a double representing the value of the Expression for the enteredvalue.

Throws:

java.lang.ArithmeticException - for NaN and Divide by Zero

IllegalEvaluationException - if an error occurs

VariableUndefinedException - for Variables not defined

Since:

JDK1.1

evaluateVariables

public Expression evaluateVariables(VariableSet variables,
                                    double[] values)
                             throws java.lang.ArithmeticException,
                                    IllegalEvaluationException

A method used to evaluate a Constant object containing multiple variables given only one variable name and one value

Specified by:

evaluateVariables in class Expression

Parameters:

variables - a VariableSet value

values - a double[] value

Returns:

a Expression object representing the given Expression with one of it's variables evaluated for the given value.

Throws:

java.lang.ArithmeticException - for NaN and Divide by Zero

IllegalEvaluationException - if an error occurs

Since:

JDK1.1