Input argument must be a character vector, string, or cell array of character vectors. Text must consist of the characters 0-9, a-f, A-F and optionally can contain a 0x prefix or type suffix. Additionally, the text input must convert to less than intmax. Hexadecimal numbers representing integers greater than or equal to flintmax might not be represented exactly as double-precision floating-point values. Hexadecimal text must consist of characters 0-9 and A-F. Hexadecimal text has too many digits for specified or implied type suffix. Use of type suffix in hexadecimal text requires the use of 0x prefix.