fAlphaAToDec

PURPOSE : Convert Alphanumeric value array to positive integer base 10 number. (source uses characters A-Z, 0-9)
SYNTAX : valueA:CharArray call fAlphaAToDec
RETURNS : Integer Positive integer base 10 value equivalent to passed in Alphanumeric array characters.
-1 on error.

EXAMPLE :
BTU Alphanumeric value to positive integer
["B","T","U"] call fAlphaAToDec -> 2000

HISTORY : CoC bn880 06/03/2003
DEPENDENCIES: CoC_LIBNUMSYS