| /* |
| * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| @bug 4096278 |
| @summary Math.abs(+0.0) wrong |
| @author Anand Palaniswamy |
| */ |
| public class AbsPositiveZero { |
| private static boolean isPositiveZero(float f) { |
| return Float.floatToIntBits(f) == Float.floatToIntBits(0.0f); |
| } |
| |
| private static boolean isPositiveZero(double d) { |
| return Double.doubleToLongBits(d) == Double.doubleToLongBits(0.0d); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (!isPositiveZero(Math.abs(-0.0d))) { |
| throw new Exception("abs(-0.0d) failed"); |
| } |
| if (!isPositiveZero(Math.abs(+0.0d))) { |
| throw new Exception("abs(+0.0d) failed"); |
| } |
| if (Math.abs(Double.POSITIVE_INFINITY) != Double.POSITIVE_INFINITY) { |
| throw new Exception("abs(+Inf) failed"); |
| } |
| if (Math.abs(Double.NEGATIVE_INFINITY) != Double.POSITIVE_INFINITY) { |
| throw new Exception("abs(-Inf) failed"); |
| } |
| double dnanval = Math.abs(Double.NaN); |
| if (dnanval == dnanval) { |
| throw new Exception("abs(NaN) failed"); |
| } |
| |
| if (!isPositiveZero(Math.abs(-0.0f))) { |
| throw new Exception("abs(-0.0f) failed"); |
| } |
| if (!isPositiveZero(Math.abs(+0.0f))) { |
| throw new Exception("abs(+0.0f) failed"); |
| } |
| if (Math.abs(Float.POSITIVE_INFINITY) != Float.POSITIVE_INFINITY) { |
| throw new Exception("abs(+Inf) failed"); |
| } |
| if (Math.abs(Float.NEGATIVE_INFINITY) != Float.POSITIVE_INFINITY) { |
| throw new Exception("abs(-Inf) failed"); |
| } |
| float fnanval = Math.abs(Float.NaN); |
| if (fnanval == fnanval) { |
| throw new Exception("abs(NaN) failed"); |
| } |
| } |
| } |