fASCIIAToDec

PURPOSE : Convert ASCII value array to positive integer base 10 number.
SYNTAX : valueA:CharArray call fASCIIAToDec
RETURNS : Integer Positive integer base 10 value equivalent to passed in ASCII array characters.
-1 on error.

EXAMPLES :
A ASCII value to positive integer
["A"] call fASCIIAToDec -> 65

. ASCII value to positive integer
["."] call fASCIIAToDec -> 46

HE ASCII value to positive integer
["H","E"] call fASCIIAToDec -> 18501

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