FT_ROUND()
 Rounds a number to a specific place
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 Syntax

      FT_ROUND( <nNumber> [, <nRoundToAmount>           ;
                [, <cRoundType>  [, <cRoundDirection>   ;
                [, <nAcceptableError> ] ] ] ] )            -> nNumber

 Arguments

     <nNumber> is the number to round

     <nRoundToAmount> is the fraction to round to or the number of places,
     default is 2.

     <cRoundType> is the type of rounding desired

        "D" for Decimal       (3 for thousandth, 1/1000)  (default)
        "F" for Fraction      (3 for thirds, 1/3)
        "W" for Whole numbers (3 for thousand, 1000)

     <cRoundDirection> is the direction to round the number toward

        "U" to round Up      1.31 ->  1.4
                            -1.31 -> -1.4
        "D" to round Down    1.36 ->  1.3
                            -1.36 -> -1.3
        "N" to round Normal  1.5  ->  2
                            -1.5  -> -2
                             1.49 ->  1
                            -1.49 -> -1

     <nAcceptableError> is the amount that is considered acceptable
     to be within, i.e., if you're within this amount of the number
     you don't need to round

 Returns

     The number, rounded as specified.

 Description

     This function will allow you to round a number.  The following can
     be specified:
       a. Direction (up, down or normal - normal is 4/5 convention)
       b. Type (whole, decimal, fraction)
       c. Amount (100's, 5 decimals, 16th, etc.)

 Examples

     // round normal to 2 decimal places
     nDollars := FT_ROUND(nDollars)

     // round normal to 6 decimal places
     nIntRate := FT_ROUND(nIntRate, 6)

     // round to nearest thousands
     nPrice   := FT_ROUND(nPrice, 3, NEAREST_WHOLE_NUMBER)

     // round Up to nearest third
     nAmount  := FT_ROUND(nAmount, 3, NEAREST_FRACTION, ROUND_UP)

     // round down to 3 decimals Within .005
     nAvg     := FT_ROUND(nAvg, 3, , ROUND_DOWN, .005)

 Source: ROUND.PRG

 Author: David Husnian