Mercurial > hg > graal-compiler
view test/compiler/6855215/Test6855215.java @ 16167:1f4955abca9b
mx: add jol command for java object layout introspection
author | Andreas Woess <andreas.woess@jku.at> |
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date | Fri, 20 Jun 2014 13:43:47 +0200 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ /** * @test * @bug 6855215 * @summary Calculation error (NaN) after about 1500 calculations * * @run main/othervm -Xbatch -XX:UseSSE=0 Test6855215 */ public class Test6855215 { private double m; private double b; public static double log10(double x) { return Math.log(x) / Math.log(10); } void calcMapping(double xmin, double xmax, double ymin, double ymax) { m = (ymax - ymin) / (log10(xmax) - log10(xmin)); b = (log10(xmin) * ymax - log10(xmax) * ymin); } public static void main(String[] args) { Test6855215 c = new Test6855215(); for (int i = 0; i < 30000; i++) { c.calcMapping(91, 121, 177, 34); if (c.m != c.m) { throw new InternalError(); } } } }