jdk8-mips64-public/hotspot: test/compiler/6855215/Test6855215.java@0803c0f69b51

     1 /*

     2  * Copyright (c) 2009, 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  */

    25 /**

    26  * @test

    27  * @bug 6855215

    28  * @summary Calculation error (NaN) after about 1500 calculations

    29  *

    30  * @run main/othervm -Xbatch -XX:UseSSE=0 Test6855215

    31  */

    33 public class Test6855215 {

    34     private double m;

    35     private double b;

    37     public static double log10(double x) {

    38         return Math.log(x) / Math.log(10);

    39     }

    41     void calcMapping(double xmin, double xmax, double ymin, double ymax) {

    42         m = (ymax - ymin) / (log10(xmax) - log10(xmin));

    43         b = (log10(xmin) * ymax - log10(xmax) * ymin);

    44     }

    46     public static void main(String[] args) {

    47         Test6855215 c = new Test6855215();

    48         for (int i = 0; i < 30000; i++) {

    49             c.calcMapping(91, 121, 177, 34);

    50             if (c.m != c.m) {

    51                 throw new InternalError();

    52             }

    53         }

    54     }

    55 }

Mercurial > jdk8-mips64-public > hotspot / file revision