Encodes positive single-precision floating point value into a string by zero-padding it to the specified number of digits.
             
 Return Value
 Return ValueA string representation of the zero-padded floating point value
 Remarks
 Remarks
             This function only zero-pads digits to the left of the decimal point.
            
             For example, the value 123.456 encoded with a 6 digit maximum would be represented as 000123.456