Return a numerical value for a 2 digit hex string
#include <firestring.h>
-lfirestring
int firestring_hextoi(char *input)
firestring_hextoi takes a string s with the first two characters as hex digits and converts the value to a integer.
Returns the hex value between 0 and 255 (inclusive), or -1 if the first two characters of s are not valid hex digits.
Ian Gulliver <[email protected]>