Examples of QuinticFunction

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

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        result = solver.solve(f, 1, 4);
        assertEquals(result, Math.PI, solver.getAbsoluteAccuracy());
    }

   public void testQuinticZero() throws MathException {
        UnivariateRealFunction f = new QuinticFunction();
        double result;

        UnivariateRealSolver solver = new BisectionSolver();
        result = solver.solve(f, -0.2, 0.2);
        assertEquals(result, 0, solver.getAbsoluteAccuracy());
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Examples of org.apache.commons.math.analysis.QuinticFunction

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    /**
     * Test of solver for the quintic function.
     */
    public void testQuinticFunction() throws MathException {
        UnivariateRealFunction f = new QuinticFunction();
        UnivariateRealSolver solver = new RiddersSolver();
        double min, max, expected, result, tolerance;

        min = -0.4; max = 0.2; expected = 0.0;
        tolerance = Math.max(solver.getAbsoluteAccuracy(),
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Examples of org.apache.commons.math.analysis.QuinticFunction

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    @Test
    public void testQuinticMin() throws MathException {
        // The quintic function has zeros at 0, +-0.5 and +-1.
        // The function has extrema (first derivative is zero) at 0.27195613 and 0.82221643,
        UnivariateRealFunction f = new QuinticFunction();
        UnivariateRealOptimizer minimizer = new BrentOptimizer();
        assertEquals(-0.27195613, minimizer.optimize(f, GoalType.MINIMIZE, -0.3, -0.2), 1.0e-8);
        assertEquals( 0.82221643, minimizer.optimize(f, GoalType.MINIMIZE,  0.3,  0.9), 1.0e-8);
        assertTrue(minimizer.getIterationCount() <= 50);
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Examples of org.apache.commons.math.analysis.QuinticFunction

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    @Test
    public void testQuinticMax() throws MathException {
        // The quintic function has zeros at 0, +-0.5 and +-1.
        // The function has extrema (first derivative is zero) at 0.27195613 and 0.82221643,
        UnivariateRealFunction f = new QuinticFunction();
        UnivariateRealOptimizer minimizer = new BrentOptimizer();
        assertEquals(0.27195613, minimizer.optimize(f, GoalType.MAXIMIZE, 0.2, 0.3), 1.0e-8);
        minimizer.setMaximalIterationCount(30);
        try {
            minimizer.optimize(f, GoalType.MAXIMIZE, 0.2, 0.3);
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Examples of org.apache.commons.math.analysis.QuinticFunction

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        result = integrator.integrate(f, min, max);
        assertEquals(expected, result, tolerance);
    }

    public void testQuinticFunction() throws MathException {
        UnivariateRealFunction f = new QuinticFunction();
        UnivariateRealIntegrator integrator = new LegendreGaussIntegrator(3, 64);
        double min, max, expected, result;

        min = 0; max = 1; expected = -1.0/48;
        result = integrator.integrate(f, min, max);
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Examples of org.apache.commons.math.analysis.QuinticFunction

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        result = solver.solve(f, 1, 4);
        assertEquals(result, FastMath.PI, solver.getAbsoluteAccuracy());
    }

   public void testQuinticZero() throws MathException {
        UnivariateRealFunction f = new QuinticFunction();
        double result;

        UnivariateRealSolver solver = new BisectionSolver();
        result = solver.solve(f, -0.2, 0.2);
        assertEquals(result, 0, solver.getAbsoluteAccuracy());
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Examples of org.apache.commons.math.analysis.QuinticFunction

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    /**
     * Test of solver for the quintic function.
     */
    public void testQuinticFunction() throws MathException {
        UnivariateRealFunction f = new QuinticFunction();
        UnivariateRealSolver solver = new RiddersSolver();
        double min, max, expected, result, tolerance;

        min = -0.4; max = 0.2; expected = 0.0;
        tolerance = FastMath.max(solver.getAbsoluteAccuracy(),
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Examples of org.apache.commons.math.analysis.QuinticFunction

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        // of zero a 0.
        // The other roots are less well to find, in particular the root at 1, because
        // the function grows fast for x>1.
        // The function has extrema (first derivative is zero) at 0.27195613 and 0.82221643,
        // intervals containing these values are harder for the solvers.
        UnivariateRealFunction f = new QuinticFunction();
        double result;
        // Brent-Dekker solver.
        UnivariateRealSolver solver = new BrentSolver();
        // Symmetric bracket around 0. Test whether solvers can handle hitting
        // the root in the first iteration.
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Examples of org.apache.commons.math.analysis.QuinticFunction

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        }
    }

    public void testInitialGuess() throws MathException {

        MonitoredFunction f = new MonitoredFunction(new QuinticFunction());
        UnivariateRealSolver solver = new BrentSolver();
        double result;

        // no guess
        result = solver.solve(f, 0.6, 7.0);
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Examples of org.apache.commons.math.analysis.QuinticFunction

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    /**
     * Test deprecated APIs.
     */
    @Deprecated
    public void testDeprecated2() throws MathException {
        UnivariateRealFunction f = new QuinticFunction();
        MullerSolver solver = new MullerSolver(f);
        double min, max, expected, result, tolerance;

        min = -0.4; max = 0.2; expected = 0.0;
        tolerance = FastMath.max(solver.getAbsoluteAccuracy(),
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