1 /*
   2  * Copyright 2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4984407
  27  * @summary Tests for {Math, StrictMath}.atan2
  28  * @compile -source 1.5 Atan2Tests.java
  29  * @run main Atan2Tests
  30  * @author Joseph D. Darcy
  31  */
  32 
  33 public class Atan2Tests {
  34     private Atan2Tests(){}
  35 
  36     static int testAtan2Case(double input1, double input2, double expected) {
  37         int failures = 0;
  38         failures += Tests.test("StrictMath.atan2(double, double)", input1, input2,
  39                                StrictMath.atan2(input1, input2), expected);
  40         failures += Tests.test("Math.atan2(double, double)", input1, input2,
  41                                Math.atan2(input1, input2), expected);
  42 
  43         return failures;
  44     }
  45 
  46     static int testAtan2() {
  47         int failures = 0;
  48 
  49         double [][] testCases = {
  50             {-3.0,      Double.POSITIVE_INFINITY,       -0.0},
  51         };
  52 
  53         for (double[] testCase : testCases) {
  54             failures+=testAtan2Case(testCase[0], testCase[1], testCase[2]);
  55         }
  56 
  57         return failures;
  58     }
  59 
  60     public static void main(String [] argv) {
  61         int failures = 0;
  62 
  63         failures += testAtan2();
  64 
  65         if (failures > 0) {
  66             System.err.println("Testing atan2 incurred "
  67                                + failures + " failures.");
  68             throw new RuntimeException();
  69         }
  70     }
  71 }