Mercurial > hg > truffle
annotate test/compiler/6855215/Test6855215.java @ 18377:ed0fce2e999a
Fold klass._java_mirror._klass into klass and improve stamps from layout_helper
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Fri, 14 Nov 2014 09:32:59 -0800 |
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1 /* |
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2 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 /** |
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26 * @test |
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27 * @bug 6855215 |
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28 * @summary Calculation error (NaN) after about 1500 calculations |
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29 * |
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30 * @run main/othervm -Xbatch -XX:UseSSE=0 Test6855215 |
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31 */ |
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32 |
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33 public class Test6855215 { |
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34 private double m; |
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35 private double b; |
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36 |
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37 public static double log10(double x) { |
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38 return Math.log(x) / Math.log(10); |
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39 } |
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40 |
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41 void calcMapping(double xmin, double xmax, double ymin, double ymax) { |
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42 m = (ymax - ymin) / (log10(xmax) - log10(xmin)); |
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43 b = (log10(xmin) * ymax - log10(xmax) * ymin); |
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44 } |
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45 |
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46 public static void main(String[] args) { |
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47 Test6855215 c = new Test6855215(); |
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48 for (int i = 0; i < 30000; i++) { |
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49 c.calcMapping(91, 121, 177, 34); |
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50 if (c.m != c.m) { |
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51 throw new InternalError(); |
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52 } |
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53 } |
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54 } |
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55 } |