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From mdigg...@apache.org
Subject cvs commit: jakarta-commons-sandbox/math/src/test/org/apache/commons/math/analysis InterpolatorTest.java SinFunction.java QuinticFunction.java
Date Wed, 25 Jun 2003 01:28:59 GMT
mdiggory    2003/06/24 18:28:59

  Added:       math/src/test/org/apache/commons/math/analysis
                        InterpolatorTest.java
  Removed:     math/src/test/org/apache/commons/math/analysis
                        SinFunction.java QuinticFunction.java
  Log:
  PR: http://nagoya.apache.org/bugzilla/show_bug.cgi?id=21023
  Submitted by:	j3322ptm@yahoo.de HotFusionMan@Yahoo.com
  
  Revision  Changes    Path
  1.1                  jakarta-commons-sandbox/math/src/test/org/apache/commons/math/analysis/InterpolatorTest.java
  
  Index: InterpolatorTest.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  package org.apache.commons.math.analysis;
  
  import org.apache.commons.math.MathException;
  
  import junit.framework.Test;
  import junit.framework.TestCase;
  import junit.framework.TestSuite;
  
  /**
   * Test the interpolation framework.
   * 
   * @author pietsch at apache.org
   *
   */
  public class InterpolatorTest extends TestCase {
  
      public InterpolatorTest(String name) {
          super(name);
      }
  
      public static Test suite() {
          TestSuite suite = new TestSuite(InterpolatorTest.class);
          suite.setName("UnivariateRealInterpolator Tests");
          return suite;
      }
  
      public void testInterpolateLinearDegenerateTwoSegment()
          throws MathException {
          System.out.println(" deg 2 seg");
          double xval[] = { 0.0, 0.5, 1.0 };
          double yval[] = { 0.0, 0.5, 1.0 };
          UnivariateRealInterpolator i = new SplineInterpolator();
          UnivariateRealFunction f = i.interpolate(xval, yval);
          double x;
          x = 0.0;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 0.5;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 1 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
      }
  
      public void testInterpolateLinearDegenerateThreeSegment()
          throws MathException {
          System.out.println(" deg 3 seg");
          double xval[] = { 0.0, 0.5, 1.0, 1.5 };
          double yval[] = { 0.0, 0.5, 1.0, 1.5 };
          UnivariateRealInterpolator i = new SplineInterpolator();
          UnivariateRealFunction f = i.interpolate(xval, yval);
          double x;
          x = 0.0;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 0.5 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 0.5;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 1 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 1;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 1.5 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
      }
  
      public void testInterpolateLinear() throws MathException {
          System.out.println(" triang 2 seg");
          double xval[] = { 0.0, 0.5, 1.0 };
          double yval[] = { 0.0, 0.5, 0.0 };
          UnivariateRealInterpolator i = new SplineInterpolator();
          UnivariateRealFunction f = i.interpolate(xval, yval);
          double x;
          x = 0.0;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 0.5 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 0.5;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 1 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
      }
  
      public void testInterpolateSin() throws MathException {
          System.out.println(" sin");
          double xval[] =
              {
                  0.0,
                  Math.PI / 6.0,
                  Math.PI / 2.0,
                  5.0 * Math.PI / 6.0,
                  Math.PI,
                  7.0 * Math.PI / 6.0,
                  3.0 * Math.PI / 2.0,
                  11.0 * Math.PI / 6.0,
                  2.0 * Math.PI };
          double yval[] = { 0.0, 0.5, 1.0, 0.5, 0.0, -0.5, -1.0, -0.5, 0.0 };
  
          System.out.println("n=" + xval.length);
          UnivariateRealInterpolator i = new SplineInterpolator();
          UnivariateRealFunction f = i.interpolate(xval, yval);
          double x;
          x = 0.0;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = Math.PI / 6.0 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = Math.PI / 6.0 + 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = Math.PI / 2 - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = Math.PI / 2 + 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = Math.PI - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = Math.PI + 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          x = 2.0 * Math.PI - 1E-6;
          System.out.println(
              "x="
                  + x
                  + " y="
                  + f.value(x)
                  + " y'="
                  + f.firstDerivative(x)
                  + " y''="
                  + f.secondDerivative(x));
          //assertEquals(0.5,f.value(Math.PI/6.0),)
      }
  
      public void testIllegalArguments() throws MathException {
          // Data set arrays of different size.
          UnivariateRealInterpolator i = new SplineInterpolator();
          try {
              double xval[] = { 0.0, 1.0 };
              double yval[] = { 0.0, 1.0, 2.0 };
              UnivariateRealFunction f = i.interpolate(xval, yval);
              fail("Failed to detect data set array with different sizes.");
          } catch (IllegalArgumentException iae) {
          }
          // X values not sorted.
          try {
              double xval[] = { 0.0, 1.0, 0.5 };
              double yval[] = { 0.0, 1.0, 2.0 };
              UnivariateRealFunction f = i.interpolate(xval, yval);
              fail("Failed to detect unsorted arguments.");
          } catch (IllegalArgumentException iae) {
          }
      }
  }
  
  
  

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