1 /* 2 * Copyright (c) 2015, 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 * @test 26 * @library /testlibrary 27 * @run main GetPutFloat 28 */ 29 30 import java.lang.reflect.Field; 31 import com.oracle.java.testlibrary.*; 32 import sun.misc.Unsafe; 33 import static com.oracle.java.testlibrary.Asserts.*; 34 35 public class GetPutFloat { 36 public static void main(String args[]) throws Exception { 37 Unsafe unsafe = Utils.getUnsafe(); 38 Test t = new Test(); 39 Field field = Test.class.getField("f"); 40 41 int offset = unsafe.fieldOffset(field); 42 assertEquals(-1.0f, unsafe.getFloat(t, offset)); 43 unsafe.putFloat(t, offset, 0.0f); 44 assertEquals(0.0f, unsafe.getFloat(t, offset)); 45 46 long address = unsafe.allocateMemory(8); 47 unsafe.putFloat(address, 1.0f); 48 assertEquals(1.0f, unsafe.getFloat(address)); 49 unsafe.freeMemory(address); 50 51 float arrayFloat[] = { -1.0f, 0.0f, 1.0f, 2.0f }; 52 int scale = unsafe.arrayIndexScale(arrayFloat.getClass()); 53 offset = unsafe.arrayBaseOffset(arrayFloat.getClass()); 54 for (int i = 0; i < arrayFloat.length; i++) { 55 assertEquals(unsafe.getFloat(arrayFloat, offset), arrayFloat[i]); 56 offset += scale; 57 } 58 } 59 60 static class Test { 61 public float f = -1.0f; 62 } 63 }