lojix/power_model/src/main/com/thesett/aima/attribute/time/TimeUtils.java
public static long millisToYearStart(int year)
    {
        // Calculate how many leap years elapsed prior to the year in question.
        int leapYears = year / 100;

        if (year < 0)
        {
            leapYears = ((year + 3) >> 2) - leapYears + ((leapYears + 3) >> 2) - 1;
        }
        else
        {
            leapYears = (year >> 2) - leapYears + (leapYears >> 2);

            if (isLeapYear(year))
            {
                leapYears--;
            }
        }

        return ((year * 365L) + leapYears - DAYS_TO_1970) * MILLIS_PER_DAY;
    }
public static long millisToYearStart(int year)
    {
        // Calculate how many leap years elapsed prior to the year in question.
        int leapYears = year / 100;

        if (year < 0)
        {
            leapYears = ((year + 3) >> 2) - leapYears + ((leapYears + 3) >> 2) - 1;
        }
        else
        {
            leapYears = (year >> 2) - leapYears + (leapYears >> 2);

            if (isLeapYear(year))
            {
                leapYears--;
            }
        }

        return ((year * 365L) + leapYears - DAYS_TO_1970) * MILLIS_PER_DAY;
    }
public static long millisToYearStart ( int year ) { // Calculate how many leap years elapsed prior to the year in question. int leapYears = year / 100 ; if ( year < 0 ) { leapYears = ( ( year + 3 ) >> 2 ) - leapYears + ( ( leapYears + 3 ) >> 2 ) - 1 ; } else { leapYears = ( year >> 2 ) - leapYears + ( leapYears >> 2 ) ; if ( isLeapYear ( year ) ) { leapYears -- ; } } return ( ( year * 365L ) + leapYears - DAYS_TO_1970 ) * MILLIS_PER_DAY ; }
Calculates the number of milliseconds to the start of the specified year, taking 1970 as zero.

@param  year The year.

@return The number of milliseconds to the start of the specified year, taking 1970 as zero.
Calculates the number of milliseconds to the start of the specified year taking 1970 as zero .