SYNOPSIS
#include <allegro.h>
int ustrncmp(const char *s1, const char *s2, int n);
DESCRIPTION
This function compares up to `n' characters of `s1' and `s2'. Example:
if (ustrncmp(prefix, long_string, ustrlen(prefix)) == 0) { /* long_string starts with prefix */ }
RETURN VALUE
Returns zero if the substrings are equal, a positive number if `s1' comes after `s2' in the ASCII collating sequence, else a negative number.