1 /*
   2  * Copyright (c) 2008, 2012, 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 package org.graalvm.compiler.jtt.lang;
  26 
  27 import org.junit.Test;
  28 
  29 import org.graalvm.compiler.jtt.JTTTest;
  30 
  31 public class StringCoding_Scale extends JTTTest {
  32 
  33     public static float maxCharPerByte = 1.0f;
  34 
  35     public static int test(int i) {
  36         return scale(i, maxCharPerByte);
  37     }
  38 
  39     // Copy of java.lang.StringCode.scale
  40     private static int scale(int len, float expansionFactor) {
  41         // We need to perform double, not float, arithmetic; otherwise
  42         // we lose low order bits when len is larger than 2**24.
  43         return (int) (len * (double) expansionFactor);
  44     }
  45 
  46     @Test
  47     public void run0() throws Throwable {
  48         runTest("test", 2);
  49     }
  50 
  51     @Test
  52     public void run1() throws Throwable {
  53         runTest("test", 1);
  54     }
  55 
  56     @Test
  57     public void run2() throws Throwable {
  58         runTest("test", 0);
  59     }
  60 
  61 }