L3TOL(3) Library Functions Manual L3TOL(3)
l3tol, ltol3 - convert between 3-byte integers and long integers
l3tol(lp, cp, n)
ltol3(cp, lp, n)
L3tol converts a list of n three-byte integers packed into a character
string pointed to by cp into a list of long integers pointed to by lp.
Ltol3 performs the reverse conversion from long integers (lp) to three-
byte integers (cp).
These functions are useful for file-system maintenance; disk addresses
are three bytes long.