getDayName()

This function gets the name of the day if the date passed to it is valid.

string getDay(string date) // date must be in the form "mm/dd/yyyy"
{
    list datesplit = llParseString2List(date,["/"],[]); //mm/dd/yyyy\
    integer month = llList2Integer(datesplit,0);
    integer day = llList2Integer(datesplit,1);
    integer year = llList2Integer(datesplit,2);
    integer a = (14-month)/12;
    integer y = year - a;
    integer m = month + (12 * a) - 2;
    
    integer returnval = (day + y + (y/4) - (y/100) + (y/400) + ((31*m)/12)) %7;

    if(returnval == 0) return "sunday";
    if(returnval == 1) return "monday";
    if(returnval == 2) return "tuesday";
    if(returnval == 3) return "wednesday";
    if(returnval == 4) return "thursday";
    if(returnval == 5) return "friday";
    if(returnval == 6) return "saturday";
    else return ""; //invalid date
}

Many thanks to David Trimboli for the 'C' (I think) code (found his site through google).

His site.

If anyone finds any mistakes/optimizations they'd like tom make, feel free to do so . I love constructive criticisim.

-Chris

P.S. This also works with leap years

Cool Chris... Thanks! I can't wait to get home and add this to my timestamp function.....

Cool, put to good use

Um... one thing tho

Um, me putting this up here means you cant sell it.... without posting the script your using it in yourself... or does that only apply to code written under the GNU private license... ... I just dont want my stuff sold w/o my perms.