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1   /*
2    * Licensed to the Hipparchus project under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The Hipparchus project licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      https://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  package org.hipparchus.analysis.differentiation;
19  
20  import org.hipparchus.util.Binary64;
21  import org.hipparchus.util.Binary64Field;
22  import org.junit.Assert;
23  import org.junit.Test;
24  
25  /**
26   * Test for class {@link FieldGradient} on {@link Binary64}.
27   */
28  public class FieldGradientBinary64Test extends FieldGradientAbstractTest<Binary64> {
29  
30      @Override
31      protected Binary64Field getValueField() {
32          return Binary64Field.getInstance();
33      }
34  
35      @Test
36      public void testHashcode() {
37          Assert.assertEquals(15728304, build(2, 1).hashCode());
38      }
39  
40      @Override
41      @Test
42      public void testLinearCombinationReference() {
43          doTestLinearCombinationReference(x -> build(x), 5.0e-16, 1.0);
44      }
45  }