The ORDMAX function returns a value that is the ordinal number of the
argument1 that contains the maximum value. The type of this function is integer.
Usage
FUNCTION ORDMAX ({argument1} ... )
Parameters
argument1

If more than one
argument1 is specified, all arguments must be of the same class.

Returned Values
 The returned value is the ordinal number that corresponds to the position of the
argument1 having the greatest value in the
argument1 series.
 The comparisons used to determine the greatest valued argument are made according to the rules for simple conditions.
 If more than one
argument1 has the same greatest value, the number returned corresponds to the position of the leftmost
argument1 having that value.