public static double getDay(object thisObj)
{
SemanticAnalyser.assert_type(thisObj, typeof(DateObject));
DateObject date = (DateObject)thisObj;
double val = date.ms;
if (Double.IsNaN(val))
{
return(Double.NaN);
}
else
{
return(DateConstructor.WeekDay(DateConstructor.LocalTime(val)));
}
}