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/***************************************************************************

 *             __________               __   ___.

 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___

 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /

 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <

 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \

 *                     \/            \/     \/    \/            \/

 * $Id: mktime.c 25850 2010-05-06 21:04:40Z kugel $

 *

 * Copyright (C) 2002 by Linus Nielsen Feltzing

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY

 * KIND, either express or implied.

 *

 ****************************************************************************/

#include "global.h"

#include <time.h>

#if CONFIG_RTC

/* mktime() code taken from lynx-2.8.5 source, written

 by Philippe De Muyter <phdm@macqel.be> */

time_t mktime(struct tm *t)

{

    short month, year;

    time_t result;

    static int m_to_d[12] =

        {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};

    month = t->tm_mon;

    year = t->tm_year + month / 12 + 1900;

    month %= 12;

    if (month < 0)

    {

        year -= 1;

        month += 12;

    }

    result = (year - 1970) * 365 + (year - 1969) / 4 + m_to_d[month];

    result = (year - 1970) * 365 + m_to_d[month];

    if (month <= 1)

        year -= 1;

    result += (year - 1968) / 4;

    result -= (year - 1900) / 100;

    result += (year - 1600) / 400;

    result += t->tm_mday;

    result -= 1;

    result *= 24;

    result += t->tm_hour;

    result *= 60;

    result += t->tm_min;

    result *= 60;

    result += t->tm_sec;

    return(result);

}

#endif