AtomicFloat.java

/******************************************************************************
 * Copyright (C) 2012, 2013, 2014, 2015, 2016
 * Younghyung Cho. <yhcting77@gmail.com>
 * All rights reserved.
 *
 * This file is part of NetMBuddy
 *
 * This program is licensed under the FreeBSD license
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of the FreeBSD Project.
 *****************************************************************************/

package free.yhc.netmbuddy.core;

import java.util.concurrent.atomic.AtomicInteger;

import free.yhc.baselib.Logger;

public class AtomicFloat extends Number {
    private static final boolean DBG = Logger.DBG_DEFAULT;
    private static final Logger P = Logger.create(AtomicFloat.class, Logger.LOGLV_DEFAULT);

    private AtomicInteger mBits;

    @SuppressWarnings("unused")
    public AtomicFloat() {
        this(0f);
    }

    public AtomicFloat(float initialValue) {
        mBits = new AtomicInteger(Float.floatToIntBits(initialValue));
    }

    @SuppressWarnings("unused")
    public final boolean
    compareAndSet(float expect, float update) {
        return mBits.compareAndSet(Float.floatToIntBits(expect),
                                   Float.floatToIntBits(update));
    }

    public final void
    set(float newValue) {
        mBits.set(Float.floatToIntBits(newValue));
    }

    public final float
    get() {
        return Float.intBitsToFloat(mBits.get());
    }

    @SuppressWarnings("unused")
    public final float
    getAndSet(float newValue) {
        return Float.intBitsToFloat(mBits.getAndSet(Float.floatToIntBits(newValue)));
    }

    @SuppressWarnings("unused")
    public final boolean
    weakCompareAndSet(float expect, float update) {
        return mBits.weakCompareAndSet(Float.floatToIntBits(expect),
                                       Float.floatToIntBits(update));
    }

    @Override
    public final float
    floatValue() {
        return get();
    }

    @Override
    public final double
    doubleValue() {
        return floatValue();
    }

    @Override
    public final int
    intValue() {
        return (int)get();
    }

    @Override
    public final long
    longValue() {
        return (long)get();
    }

}