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 IntegerBits extends JTTTest { 30 31 @SuppressWarnings("unused") private static int init = Integer.reverseBytes(42); 32 private static int original = 0x01020304; 33 private static int v = 0b1000; 34 private static int zero = 0; 35 36 public static int test(int o) { 37 return Integer.reverseBytes(o); 38 } 39 40 public static int test2(int o) { 41 return Integer.numberOfLeadingZeros(o); 42 } 43 44 public static int test3(int o) { 45 return Integer.numberOfTrailingZeros(o); 46 } 47 48 public static int test4(int o) { 49 return Integer.bitCount(o); 50 } 51 52 @Test 53 public void run0() { 54 runTest("test", original); 55 } 56 57 @Test 58 public void run1() { 59 runTest("test3", v); 60 } 61 62 @Test 63 public void run2() { 64 runTest("test2", v); 65 } 66 67 @Test 68 public void run3() { 69 runTest("test3", zero); 70 } 71 72 @Test 73 public void run4() { 74 runTest("test2", zero); 75 } 76 77 @Test 78 public void run5() { 79 runTest("test", 0x01020304); 80 } 81 82 @Test 83 public void run6() { 84 runTest("test3", 0b1000); 85 } 86 87 @Test 88 public void run7() { 89 runTest("test2", 0b1000); 90 } 91 92 @Test 93 public void run8() { 94 runTest("test3", 0); 95 } 96 97 @Test 98 public void run9() { 99 runTest("test2", 0); 100 } 101 102 @Test 103 public void run10() { 104 runTest("test4", 0xffffffff); 105 } 106 107 @Test 108 public void run11() { 109 runTest("test2", 0xFFFFFFFF); 110 } 111 112 @Test 113 public void run12() { 114 runTest("test2", 0x7FFFFFFF); 115 } 116 117 @Test 118 public void run17() { 119 runTest("test2", 0x80000000); 120 } 121 122 @Test 123 public void run18() { 124 runTest("test2", 0x40000000); 125 } 126 127 @Test 128 public void run13() { 129 runTest("test3", 0x7FFFFFFF); 130 } 131 132 @Test 133 public void run14() { 134 runTest("test3", 0xFFFFFFFF); 135 } 136 137 @Test 138 public void run15() { 139 runTest("test3", 0x80000000); 140 } 141 142 @Test 143 public void run16() { 144 runTest("test3", 0x40000000); 145 } 146 147 @Test 148 public void run19() { 149 runTest("test4", 0x80000000); 150 } 151 152 @Test 153 public void run20() { 154 runTest("test4", 0x40000000); 155 } 156 157 @Test 158 public void run21() { 159 runTest("test4", 0x00000001); 160 } 161 162 }