1 /*
2 * Licensed to the Apache Software Foundation (ASF) 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 ASF 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 * http://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 package org.apache.commons.nabla;
18
19 import org.apache.commons.nabla.NablaStrictMath;
20
21
22 public class NablaStrictMathTest extends AbstractNablaTest {
23
24 protected Class<?> getNablaClass() {
25 return NablaStrictMath.class;
26 }
27
28 protected Class<?> getJavaClass() {
29 return StrictMath.class;
30 }
31
32 public static double acosh(double a) {
33 return StrictMath.log(a + StrictMath.sqrt(a - 1) * StrictMath.sqrt(a + 1));
34 }
35
36 public static double asinh(double a) {
37 return StrictMath.log(a + StrictMath.sqrt(a * a + 1));
38 }
39
40 public static double atanh(double a) {
41 return (StrictMath.log1p(a) - StrictMath.log1p(-a)) / 2;
42 }
43
44 }