agi.foundation.numericalmethods.advanced

(agi.foundation.core-2023r2.jar)

Class RealPolynomial

java.lang.Object

agi.foundation.numericalmethods.advanced.RealPolynomial

Direct Known Subclasses:

CubicRealPolynomial, QuadraticRealPolynomial, QuarticRealPolynomial

public class RealPolynomial
extends Object

Represents a polynomial function of one variable with only real coefficients.

Constructor Summary

Constructors

Constructor and Description
RealPolynomial(double... coefficients) Initializes a new instance.

Method Summary

Modifier and Type	Method and Description
double[]	evaluate(double... x) Evaluates the polynomial at the specified values of the independent variable.
double	evaluate(double x) Evaluates the polynomial at the specified value of the independent variable.
double	get(int index) Gets the coefficient of the monomial of the specified order.
int	getOrder() Gets the order of the polynomial.

Methods inherited from class java.lang.Object

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

Constructor Detail

RealPolynomial

public RealPolynomial(double... coefficients)

Initializes a new instance.

Parameters:

coefficients - The coefficients of the polynomial, starting with the highest order term (P = coefficients[0]*x^(N) + coefficients[1]*x^(N-1) + ... + coefficients[N-1]*x + coefficients[N]) where N is the order of the polynomial.

Method Detail

getOrder

public final int getOrder()

Gets the order of the polynomial.

get

public final double get(int index)

Gets the coefficient of the monomial of the specified order.

Parameters:

index - The index of the coefficient of the monomial of the specified order.

Returns:

The coefficient of the given term.

Throws:

ArgumentOutOfRangeException - Thrown when the parameter index is less than zero or is greater than or equal to the Order (get).

evaluate

public final double evaluate(double x)

Evaluates the polynomial at the specified value of the independent variable.

Parameters:

x - The independent variable value.

Returns:

The evaluated value of the polynomial.

evaluate

public final double[] evaluate(double... x)

Evaluates the polynomial at the specified values of the independent variable.

Parameters:

x - The independent variable values.

Returns:

The evaluated values of the polynomial.