/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.analytics.math.interpolation;
import static org.testng.AssertJUnit.assertEquals;
import static org.testng.AssertJUnit.assertFalse;
import org.testng.annotations.Test;
import com.opengamma.util.test.TestGroup;
/**
* Test.
*/
@Test(groups = TestGroup.UNIT)
public class InverseMultiquadraticRadialBasisFunctionTest {
private static final double X1 = 2.4;
@Test
public void test() {
InverseMultiquadraticRadialBasisFunction f = new InverseMultiquadraticRadialBasisFunction(X1);
InverseMultiquadraticRadialBasisFunction other = new InverseMultiquadraticRadialBasisFunction(X1);
assertEquals(other, f);
assertEquals(other.hashCode(), f.hashCode());
f = new InverseMultiquadraticRadialBasisFunction();
other = new InverseMultiquadraticRadialBasisFunction(1);
assertEquals(other, f);
other = new InverseMultiquadraticRadialBasisFunction(X1);
assertFalse(other.equals(f));
for (int i = 0; i < 10; i++) {
final double x = Math.random();
assertEquals(f.evaluate(x), 1. / Math.sqrt(x * x + 1), 0);
assertEquals(other.evaluate(x), 1. / Math.sqrt(x * x + X1 * X1), 0);
}
}
}