/*

 * 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");

        }

    }

}