@Test
/** Test of integrator for the sine function. */
public void testSinFunction() {
UnivariateFunction f = new Gaussian(10, 2);
UnivariateIntegrator integrator = new SimpsonIntegrator();
double a, b, expected, tolerance, result;
a = 8;
b = 12;
expected = 0.68269;
tolerance = 0.00001;
tolerance = Math.abs(expected * integrator.getRelativeAccuracy());
result = integrator.integrate(MAX_EVAL, f, a, b);
assertEquals(expected, result, tolerance);
log.info(
"Result: "
+ result
+ ", tolerance: "
+ tolerance
+ " - Relative accuracy: "
+ integrator.getRelativeAccuracy()
+ " - Absolute accuracy: "
+ integrator.getAbsoluteAccuracy()
+ " - Iterations: "
+ integrator.getIterations());
NormalDistribution distribution = new NormalDistribution(10, 2);
result = distribution.cumulativeProbability(a, b);
log.info("Distribution result: " + result);
}
