Convert a hexadecimal string to an integer efficiently in C?
c, hex, performance, strtol
Solution
You want `strtol` or `strtoul`. See also the Unix man page
Problem
In C, what is the most efficient way to convert a string of hex digits into a binary `unsigned int` or `unsigned long`? For example, if I have `0xFFFFFFFE`, I want an `int` with the base10 value `4294967294`.