1 /*
   2  * Copyright (c) 2012, 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 package org.graalvm.compiler.jtt.jdk;
  24 
  25 import org.junit.Test;
  26 
  27 import org.graalvm.compiler.jtt.JTTTest;
  28 
  29 public class LongBits extends JTTTest {
  30 
  31     @SuppressWarnings("unused") private static long init = Long.reverseBytes(42);
  32     private static long original = 0x0102030405060708L;
  33     private static long v = 0b1000L;
  34     private static long v2 = 0x0100000000L;
  35     private static long zero = 0L;
  36 
  37     public static long test(long o) {
  38         return Long.reverseBytes(o);
  39     }
  40 
  41     public static int test2(long o) {
  42         return Long.numberOfLeadingZeros(o);
  43     }
  44 
  45     public static int test3(long o) {
  46         return Long.numberOfTrailingZeros(o);
  47     }
  48 
  49     public static int test4(long o) {
  50         return Long.bitCount(o);
  51     }
  52 
  53     @Test
  54     public void run0() {
  55         runTest("test", original);
  56     }
  57 
  58     @Test
  59     public void run1() {
  60         runTest("test3", v);
  61     }
  62 
  63     @Test
  64     public void run2() {
  65         runTest("test2", v);
  66     }
  67 
  68     @Test
  69     public void run3() {
  70         runTest("test3", zero);
  71     }
  72 
  73     @Test
  74     public void run4() {
  75         runTest("test2", zero);
  76     }
  77 
  78     @Test
  79     public void run5() {
  80         runTest("test", 0x0102030405060708L);
  81     }
  82 
  83     @Test
  84     public void run6() {
  85         runTest("test3", 0b1000L);
  86     }
  87 
  88     @Test
  89     public void run7() {
  90         runTest("test2", 0b1000L);
  91     }
  92 
  93     @Test
  94     public void run8() {
  95         runTest("test3", 0L);
  96     }
  97 
  98     @Test
  99     public void run9() {
 100         runTest("test2", 0L);
 101     }
 102 
 103     @Test
 104     public void run10() {
 105         runTest("test2", v2);
 106     }
 107 
 108     @Test
 109     public void run11() {
 110         runTest("test3", v2);
 111     }
 112 
 113     @Test
 114     public void run12() {
 115         runTest("test2", 0x0100000000L);
 116     }
 117 
 118     @Test
 119     public void run13() {
 120         runTest("test3", 0x0100000000L);
 121     }
 122 
 123     @Test
 124     public void run14() {
 125         runTest("test4", 0L);
 126         runTest("test4", 1L);
 127         runTest("test4", 0xffff00ffL);
 128         runTest("test4", 0xffffffffL);
 129         runTest("test4", 0x3ffffffffL);
 130         runTest("test4", 0xffffffff3L);
 131         runTest("test4", 0xffffffffffffffffL);
 132     }
 133 }