/*

 * Copyright (c) 2013, 2015, 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

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 */

/*

 * @test

 * @bug 8026844

 * @summary Test repeating multiplyExact

 * @library /testlibrary /

 * @modules java.base/jdk.internal.misc

 *          java.management

 *

 * @run main compiler.intrinsics.mathexact.MulExactIRepeatTest

 */

package compiler.intrinsics.mathexact;

import jdk.test.lib.Utils;

import java.util.Random;

public class MulExactIRepeatTest {

    public static void main(String[] args) {

        runTest(new Verify.MulExactI());

    }

    public static int nonExact(int x, int y, Verify.BinaryMethod method) {

        int result = method.unchecked(x, y);

        result += method.unchecked(x, y);

        result += method.unchecked(x, y);

        result += method.unchecked(x, y);

        return result;

    }

    public static void runTest(Verify.BinaryMethod method) {

        Random rnd = Utils.getRandomInstance();

        for (int i = 0; i < 50000; ++i) {

            int x = Integer.MAX_VALUE - 10;

            int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);

            int c = rnd.nextInt() / 10;

            int d = rnd.nextInt(9);

            int a = catchingExact(x, y, method);

            if (a != 36) {

                throw new RuntimeException("a != 36 : " + a);

            }

            int b = nonExact(c, d, method);

            int n = exact(c, d, method);

            if (n != b) {

                throw new RuntimeException("n != b : " + n + " != " + b);

            }

        }

    }

    public static int exact(int x, int y, Verify.BinaryMethod method) {

        int result = 0;

        result += method.checkMethod(x, y);

        result += method.checkMethod(x, y);

        result += method.checkMethod(x, y);

        result += method.checkMethod(x, y);

        return result;

    }

    public static int catchingExact(int x, int y, Verify.BinaryMethod method) {

        int result = 0;

        try {

            result += 5;

            result = method.checkMethod(x, y);

        } catch (ArithmeticException e) {

            result += 1;

        }

        try {

            result += 6;

            result += method.checkMethod(x, y);

        } catch (ArithmeticException e) {

            result += 2;

        }

        try {

            result += 7;

            result += method.checkMethod(x, y);

        } catch (ArithmeticException e) {

            result += 3;

        }

        try {

            result += 8;

            result += method.checkMethod(x, y);

        } catch (ArithmeticException e) {

            result += 4;

        }

        return result;

    }

}