org.apache.commons.math.analysis
Class PolynomialSplineFunctionTest

java.lang.Object
  junit.framework.Assert
      junit.framework.TestCase
          org.apache.commons.math.analysis.PolynomialSplineFunctionTest

All Implemented Interfaces:

junit.framework.Test

public class PolynomialSplineFunctionTest
extends junit.framework.TestCase

Tests the PolynomialSplineFunction implementation.

Version:

$Revision: 566833 $

Field Summary

protected org.apache.commons.math.analysis.PolynomialFunction	dp Derivative of test polynomials -- 2x + 1
protected double[]	knots Knot points
protected org.apache.commons.math.analysis.PolynomialFunction[]	polynomials Quadratic polynomials used in tests: x^2 + x [-1, 0) x^2 + x + 2 [0, 1) x^2 + x + 4 [1, 2) Defined so that evaluation using PolynomialSplineFunction evaluation algorithm agrees at knot point boundaries.
protected double	tolerance Error tolerance for tests

Constructor Summary

PolynomialSplineFunctionTest()

Method Summary

protected int	findKnot(double[] knots, double x) Do linear search to find largest knot point less than or equal to x.
void	testConstructor()
void	testValues()

Methods inherited from class junit.framework.TestCase

countTestCases, createResult, getName, run, run, runBare, runTest, setName, setUp, tearDown, toString

Methods inherited from class junit.framework.Assert

assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertEquals, assertFalse, assertFalse, assertNotNull, assertNotNull, assertNotSame, assertNotSame, assertNull, assertNull, assertSame, assertSame, assertTrue, assertTrue, fail, fail, failNotEquals, failNotSame, failSame

Methods inherited from class java.lang.Object

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

Field Detail

tolerance

protected double tolerance

Error tolerance for tests

polynomials

protected org.apache.commons.math.analysis.PolynomialFunction[] polynomials

Quadratic polynomials used in tests: x^2 + x [-1, 0) x^2 + x + 2 [0, 1) x^2 + x + 4 [1, 2) Defined so that evaluation using PolynomialSplineFunction evaluation algorithm agrees at knot point boundaries.

knots

protected double[] knots

Knot points

dp

protected org.apache.commons.math.analysis.PolynomialFunction dp

Derivative of test polynomials -- 2x + 1

Constructor Detail

PolynomialSplineFunctionTest

public PolynomialSplineFunctionTest()

Method Detail

testConstructor

public void testConstructor()

testValues

public void testValues()
                throws java.lang.Exception

Throws:

java.lang.Exception

findKnot

protected int findKnot(double[] knots,
                       double x)

Do linear search to find largest knot point less than or equal to x. Implementation does binary search.