l3tol, ltol3 - convert between 3-byte integers and long integers
void l3tol (long *lp, const char *cp, int n);
void ltol3 (char *cp, const long *lp, int 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 threebyte
These functions are useful for file-system maintenance where the block
numbers are three bytes long.
Because of possible differences in byte ordering, the numerical values of
the long integers are machine-dependent.
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