System.NumberFormatter.ParsePrecision C# (CSharp) 메소드

		private static int ParsePrecision (string format)
		{
			int precision = 0;
			for (int i = 1; i < format.Length; i++) {
				int val = format [i] - '0';
				precision = precision * 10 + val;
				if (val < 0 || val > 9 || precision > 99)
					return -2;
			}
			return precision;
		}