Package org.apache.commons.math.analysis

Examples of org.apache.commons.math.analysis.SinFunction

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    @Deprecated
    public void testDeprecated() throws MathException {
        // The sinus function is behaved well around the root at #pi. The second
        // order derivative is zero, which means linar approximating methods will
        // still converge quadratically.
        UnivariateRealFunction f = new SinFunction();
        double result;
        UnivariateRealSolver solver = new BrentSolver(f);
        // Somewhat benign interval. The function is monotone.
        result = solver.solve(3, 4);
        //System.out.println(
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    public void testSinZero() throws MathException {
        // The sinus function is behaved well around the root at #pi. The second
        // order derivative is zero, which means linar approximating methods will
        // still converge quadratically.
        UnivariateRealFunction f = new SinFunction();
        double result;
        UnivariateRealSolver solver = new BrentSolver();
        // Somewhat benign interval. The function is monotone.
        result = solver.solve(f, 3, 4);
        //System.out.println(
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        result = UnivariateRealSolverUtils.solve(f, 0.85, 5);
        assertEquals(result, 1.0, 1E-6);
    }

    public void testRootEndpoints() throws Exception {
        UnivariateRealFunction f = new SinFunction();
        UnivariateRealSolver solver = new BrentSolver();

        // endpoint is root
        double result = solver.solve(f, Math.PI, 4);
        assertEquals(Math.PI, result, solver.getAbsoluteAccuracy());
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        assertEquals(Math.PI, result, solver.getAbsoluteAccuracy());

    }

    public void testBadEndpoints() throws Exception {
        UnivariateRealFunction f = new SinFunction();
        UnivariateRealSolver solver = new BrentSolver();
        try {  // bad interval
            solver.solve(f, 1, -1);
            fail("Expecting IllegalArgumentException - bad interval");
        } catch (IllegalArgumentException ex) {
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    /**
     * Test deprecated APIs.
     */
    @Deprecated
    public void testDeprecated() throws MathException {
        UnivariateRealFunction f = new SinFunction();
        UnivariateRealSolver solver = new MullerSolver(f);
        double min, max, expected, result, tolerance;

        min = 3.0; max = 4.0; expected = Math.PI;
        tolerance = Math.max(solver.getAbsoluteAccuracy(),
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    /**
     * Test of solver for the sine function.
     */
    public void testSinFunction() throws MathException {
        UnivariateRealFunction f = new SinFunction();
        UnivariateRealSolver solver = new MullerSolver();
        double min, max, expected, result, tolerance;

        min = 3.0; max = 4.0; expected = Math.PI;
        tolerance = Math.max(solver.getAbsoluteAccuracy(),
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    /**
     * Test of solver for the sine function using solve2().
     */
    public void testSinFunction2() throws MathException {
        UnivariateRealFunction f = new SinFunction();
        MullerSolver solver = new MullerSolver();
        double min, max, expected, result, tolerance;

        min = 3.0; max = 4.0; expected = Math.PI;
        tolerance = Math.max(solver.getAbsoluteAccuracy(),
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    /**
     * Test of parameters for the solver.
     */
    public void testParameters() throws Exception {
        UnivariateRealFunction f = new SinFunction();
        UnivariateRealSolver solver = new MullerSolver();

        try {
            // bad interval
            solver.solve(f, 1, -1);
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*/
public final class NewtonSolverTest extends TestCase {

    @Deprecated
    public void testDeprecated() throws MathException {
        DifferentiableUnivariateRealFunction f = new SinFunction();
        double result;

        UnivariateRealSolver solver = new NewtonSolver(f);
        result = solver.solve(3, 4);
        assertEquals(result, Math.PI, solver.getAbsoluteAccuracy());
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    /**
    *
    */
   public void testSinZero() throws MathException {
       DifferentiableUnivariateRealFunction f = new SinFunction();
       double result;

       UnivariateRealSolver solver = new NewtonSolver();
       result = solver.solve(f, 3, 4);
       assertEquals(result, Math.PI, solver.getAbsoluteAccuracy());
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Related Classes of org.apache.commons.math.analysis.SinFunction

  • org.apache.commons.math.analysis.integration.LegendreGaussIntegratorTest
  • org.apache.commons.math.analysis.integration.RombergIntegratorTest
  • org.apache.commons.math.analysis.integration.SimpsonIntegratorTest
  • org.apache.commons.math.analysis.integration.TrapezoidIntegratorTest
  • org.apache.commons.math.analysis.interpolation.DividedDifferenceInterpolatorTest
  • org.apache.commons.math.analysis.interpolation.NevilleInterpolatorTest
  • org.apache.commons.math.analysis.solvers.BisectionSolverTest
  • org.apache.commons.math.analysis.solvers.BrentSolverTest
  • org.apache.commons.math.analysis.solvers.LaguerreSolverTest
  • org.apache.commons.math.analysis.solvers.MullerSolverTest
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