1 /*
   2  * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4984407
  27  * @summary Tests for {Math, StrictMath}.atan2
  28  * @author Joseph D. Darcy
  29  */
  30 
  31 public class Atan2Tests {
  32     private Atan2Tests(){}
  33 
  34     static int testAtan2Case(double input1, double input2, double expected) {
  35         int failures = 0;
  36         failures += Tests.test("StrictMath.atan2(double, double)", input1, input2,
  37                                StrictMath.atan2(input1, input2), expected);
  38         failures += Tests.test("Math.atan2(double, double)", input1, input2,
  39                                Math.atan2(input1, input2), expected);
  40 
  41         return failures;
  42     }
  43 
  44     static int testAtan2() {
  45         int failures = 0;
  46 
  47         double [][] testCases = {
  48             {-3.0,      Double.POSITIVE_INFINITY,       -0.0},
  49         };
  50 
  51         for (double[] testCase : testCases) {
  52             failures+=testAtan2Case(testCase[0], testCase[1], testCase[2]);
  53         }
  54 
  55         return failures;
  56     }
  57 
  58     public static void main(String [] argv) {
  59         int failures = 0;
  60 
  61         failures += testAtan2();
  62 
  63         if (failures > 0) {
  64             System.err.println("Testing atan2 incurred "
  65                                + failures + " failures.");
  66             throw new RuntimeException();
  67         }
  68     }
  69 }