/*
 * $Id: acctweek.txt 15102 2010-07-14 12:48:39Z vszakats $
 */

/*  $DOC$
 *  $FUNCNAME$
 *     FT_ACCTWEEK()
 *  $CATEGORY$
 *     Date/Time
 *  $ONELINER$
 *     Return accounting week data
 *  $SYNTAX$
 *     FT_ACCTWEEK( [ <dGivenDate> ], [ <nWeekNum> ] ) -> aDateInfo
 *  $ARGUMENTS$
 *     <dGivenDate> is any valid date in any date format.  Defaults
 *     to current system date if not supplied.
 * 
 *     <nWeekNum> is a number from 1 to 52 signifying a week.
 *     Defaults to current week if not supplied.
 *  $RETURNS$
 *     A three element array containing the following data:
 * 
 *        aDateInfo[1] - The year and week as a character string "YYYYWW"
 *        aDateInfo[2] - The beginning date of the accounting week
 *        aDateInfo[3] - The ending date of the accounting week
 *  $DESCRIPTION$
 *     FT_ACCTWEEK() returns an array containing data about the
 *     accounting week containing the given date.
 * 
 *     An accounting period has the following characteristics:
 * 
 *     If the first week of the period contains 4 or more 'work'
 *     days, it is included in the period; otherwise, the first
 *     week was included in the prior period.
 * 
 *     If the last week of the period contains 4 or more 'work'
 *     days it is included in the period; otherwise, the last week
 *     is included in the next period.  This results in 13 week
 *     'quarters' and 4 or 5 week 'months'.  Every 5 or 6 years, a
 *     'quarter' will contain 14 weeks and the year will contain 53
 *     weeks.
 *  $EXAMPLES$
 *     // get info about accounting week containing 9/15/90
 *     aDateInfo := FT_ACCTWEEK( CTOD("09/15/90") )
 *     ? aDateInfo[1]   //  199037       (37th week)
 *     ? aDateInfo[2]   //  09/09/90     beginning of week 37
 *     ? aDateInfo[3]   //  09/15/90     end of week 37
 * 
 *     // get info about accounting week 25 in year containing 9/15/90
 *     aDateInfo := FT_ACCTWEEK( CTOD("09/15/90"), 25 )
 *     ? aDateInfo[1]   //  199025
 *     ? aDateInfo[2]   //  06/17/89   beginning of week 25
 *     ? aDateInfo[3]   //  06/23/90   end of week 25
 *  $SEEALSO$
 *     FT_DATECNFG() FT_ACCTMONTH() FT_ACCTQTR() FT_ACCTYEAR()
 *  $END$
 */
