private unsafe static void StringToNumber(String str, NumberStyles options, ref NumberBuffer number, NumberFormatInfo info, Boolean parseDecimal) {
if (str == null) {
throw new ArgumentNullException("String");
}
BCLDebug.Assert(info != null, "");
fixed (char* stringPointer = str) {
char * p = stringPointer;
if (!ParseNumber(ref p, options, ref number, info , parseDecimal)
|| (p - stringPointer < str.Length && !TrailingZeros(str, (int)(p - stringPointer)))) {
throw new FormatException(Environment.GetResourceString("Format_InvalidString"));
}
}
}