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MC > From: Marek Chlopek [mailto:mchlopek@xxxxxxx]
MC > Sent: Wednesday, October 15, 2003 7:38 PM
MC > Subject: [amibroker] Date difference
MC >
MC > Hello,
MC >
MC > I have to calculate the difference in days between two dates.
MC > Does anyone
MC > have a ready-to-use formula?
Hi,
this is the solution, i think.
==================================
function mcRATADIEDATE(yyyy, mm, dd)
// converts date to the Rata Die format
// yyyy - the year
// mm - the month
// dd - the day of the month
{
yyyy = yyyy + int((mm-14)/12);
mm = IIf(mm < 3, mm+12, mm);
rd = dd
+ int((153*mm-457)/5)
+ 365*yyyy + int(yyyy/4) - int(yyyy/100) + int(yyyy/400) -306;
return (rd);
};
Filter=1;
a = mcRATADIEDATE(1980, 01, 01);
b = mcRATADIEDATE(1981, 01, 01);
diff = b-a;
AddColumn(diff,"",1);
Buy = 0;
Sell = 0;
================================
Regards,
Marek Chlopek
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