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 */ 24 25 /** 26 * @test 27 * @bug 6855215 28 * @summary Calculation error (NaN) after about 1500 calculations 29 * 30 * @run main/othervm -Xbatch -XX:UseSSE=0 compiler.c1.Test6855215 31 */ 32 33 package compiler.c1; 34 35 public class Test6855215 { 36 private double m; 37 private double b; 38 39 public static double log10(double x) { 40 return Math.log(x) / Math.log(10); 41 } 42 43 void calcMapping(double xmin, double xmax, double ymin, double ymax) { 44 m = (ymax - ymin) / (log10(xmax) - log10(xmin)); 45 b = (log10(xmin) * ymax - log10(xmax) * ymin); 46 } 47 48 public static void main(String[] args) { 49 Test6855215 c = new Test6855215(); 50 for (int i = 0; i < 30000; i++) { 51 c.calcMapping(91, 121, 177, 34); 52 if (c.m != c.m) { 53 throw new InternalError(); 54 } 55 } 56 } 57 }