1 /* 2 * Copyright (c) 2017, 2017, 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.optimize; 24 25 import org.junit.Test; 26 27 import org.graalvm.compiler.jtt.JTTTest; 28 29 /* 30 * Tests constant folding of double operations. 31 */ 32 public class Fold_Double04 extends JTTTest { 33 34 // Contrived check whether both arguments are the same kind of zero 35 public static boolean test(double x, double y) { 36 if (x == 0) { 37 if (1 / x == Double.NEGATIVE_INFINITY) { 38 return 1 / y == Double.NEGATIVE_INFINITY; 39 } else { 40 return 1 / y == Double.POSITIVE_INFINITY; 41 } 42 } 43 return false; 44 } 45 46 @Test 47 public void run0() throws Throwable { 48 runTest("test", -0d, -0d); 49 } 50 51 @Test 52 public void run1() throws Throwable { 53 runTest("test", -0d, 0d); 54 } 55 56 @Test 57 public void run2() throws Throwable { 58 runTest("test", 0d, -0d); 59 } 60 61 @Test 62 public void run3() throws Throwable { 63 runTest("test", 0d, 0d); 64 } 65 66 }