/*

 * Copyright (c) 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 */

package sun.java2d.marlin.stats;

/**

 * Statistics as long values

 */

public class StatLong {

    public final String name;

    public long count = 0l;

    public long sum = 0l;

    public long min = Integer.MAX_VALUE;

    public long max = Integer.MIN_VALUE;

    public StatLong(final String name) {

        this.name = name;

    }

    public void reset() {

        count = 0l;

        sum = 0l;

        min = Integer.MAX_VALUE;

        max = Integer.MIN_VALUE;

    }

    public void add(final int val) {

        count++;

        sum += val;

        if (val < min) {

            min = val;

        }

        if (val > max) {

            max = val;

        }

    }

    public void add(final long val) {

        count++;

        sum += val;

        if (val < min) {

            min = val;

        }

        if (val > max) {

            max = val;

        }

    }

    @Override

    public String toString() {

        final StringBuilder sb = new StringBuilder(128);

        toString(sb);

        return sb.toString();

    }

    public final StringBuilder toString(final StringBuilder sb) {

        sb.append(name).append('[').append(count);

        sb.append("] sum: ").append(sum).append(" avg: ");

        sb.append(trimTo3Digits(((double) sum) / count));

        sb.append(" [").append(min).append(" | ").append(max).append("]");

        return sb;

    }

    /**

     * Adjust the given double value to keep only 3 decimal digits

     *

     * @param value value to adjust

     * @return double value with only 3 decimal digits

     */

    public static double trimTo3Digits(final double value) {

        return ((long) (1e3d * value)) / 1e3d;

    }

}