QUT.Gplex.Parser.CharacterUtilities.ValOfHex C# (CSharp) Method

        private static int ValOfHex(char x)
        {
            return ((x >= '0' && x <= '9') ?
                (int)x - (int)'0' :
                (int)char.ToLower(x, CultureInfo.InvariantCulture) + (10 - (int)'a'));
        }