/*

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 * 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

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 */

/**

 * @test

 * @bug 4143272 6548425

 * @summary The natural ordering on Float and Double was not even a partial

 *          order (i.e., it violated the contract of Comparable.compareTo).

 *          Now it's a total ordering.  Arrays.sort(double[])

 *          and Arrays.sort(double[]) reflect the new ordering.  Also,

 *          Arrays.equals(double[], double[]) and

 *          Arrays.equals(float[], float[]) reflect the definition of

 *          equality used by Float and Double.

 */

import java.util.*;

@SuppressWarnings("unchecked")

public class FloatDoubleOrder {

    void test(String[] args) throws Throwable {

        double[] unsortedDbl = new double[] {1.0d, 3.7d, Double.NaN, -2.0d,

           Double.POSITIVE_INFINITY, Double.NEGATIVE_INFINITY, 0.0d, -0.0d};

        double[] sortedDbl = new double[] {Double.NEGATIVE_INFINITY, -2.0d,

           -0.0d, 0.0d, 1.0d, 3.7d, Double.POSITIVE_INFINITY, Double.NaN};

        List list = new ArrayList();

        for (int i=0; i<unsortedDbl.length; i++)

            list.add(new Double(unsortedDbl[i]));

        Collections.sort(list);

        List sortedList = new ArrayList();

        for (int i=0; i<sortedDbl.length; i++)

            sortedList.add(new Double(sortedDbl[i]));

        check(list.equals(sortedList));

        Arrays.sort(unsortedDbl);

        check(Arrays.equals(unsortedDbl, sortedDbl));

        double negNan = Double.longBitsToDouble(0xfff8000000000000L);

        for (int i = 0; i < sortedDbl.length; i++) {

            equal(Arrays.binarySearch(sortedDbl, sortedDbl[i]), i);

            if (Double.isNaN(sortedDbl[i]))

                equal(Arrays.binarySearch(sortedDbl, negNan), i);

        }

        float[] unsortedFlt = new float[] {1.0f, 3.7f, Float.NaN, -2.0f,

           Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY, 0.0f, -0.0f};

        float[] sortedFlt = new float[] {Float.NEGATIVE_INFINITY, -2.0f,

           -0.0f, 0.0f, 1.0f, 3.7f, Float.POSITIVE_INFINITY, Float.NaN};

        list.clear();

        for (int i=0; i<unsortedFlt.length; i++)

            list.add(new Float(unsortedFlt[i]));

        Collections.sort(list);

        sortedList.clear();

        for (int i=0; i<sortedFlt.length; i++)

            sortedList.add(new Float(sortedFlt[i]));

        check(list.equals(sortedList));

        Arrays.sort(unsortedFlt);

        check(Arrays.equals(unsortedFlt, sortedFlt));

        float negNaN = Float.intBitsToFloat(0xFfc00000);

        for (int i = 0; i < sortedDbl.length; i++) {

            equal(Arrays.binarySearch(sortedFlt, sortedFlt[i]), i);

            if (Float.isNaN(sortedFlt[i]))

                equal(Arrays.binarySearch(sortedFlt, negNaN), i);

        }

        // 6548425: Arrays.sort incorrectly sorts a double array

        // containing negative zeros

        double[] da = {-0.0d, -0.0d, 0.0d, -0.0d};

        Arrays.sort(da, 1, 4);

        check(Arrays.equals(da, new double[] {-0.0d, -0.0d, -0.0d, 0.0d}));

        float[] fa = {-0.0f, -0.0f, 0.0f, -0.0f};

        Arrays.sort(fa, 1, 4);

        check(Arrays.equals(fa, new float[] {-0.0f, -0.0f, -0.0f, 0.0f}));

    }

    //--------------------- Infrastructure ---------------------------

    volatile int passed = 0, failed = 0;

    void pass() {passed++;}

    void fail() {failed++; Thread.dumpStack();}

    void fail(String msg) {System.err.println(msg); fail();}

    void unexpected(Throwable t) {failed++; t.printStackTrace();}

    void check(boolean cond) {if (cond) pass(); else fail();}

    void equal(Object x, Object y) {

        if (x == null ? y == null : x.equals(y)) pass();

        else fail(x + " not equal to " + y);}

    public static void main(String[] args) throws Throwable {

        new FloatDoubleOrder().instanceMain(args);}

    void instanceMain(String[] args) throws Throwable {

        try {test(args);} catch (Throwable t) {unexpected(t);}

        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

        if (failed > 0) throw new AssertionError("Some tests failed");}

}