"Dave Korn" <[EMAIL PROTECTED]> writes: > Since pointer subtraction is well defined, and it returns an int, then ... > > int *a, *b; > > if (a < b) > dosomething (); > > ... is just the same as ... > > int *a, *b; > > if ((b - a) >= 0) > dosomething ();
This may not work correctly if ((char*) b - (char*) a) % sizeof int != 0 (which can happen if __alignof__ int < sizeof int). Andreas. -- Andreas Schwab, SuSE Labs, [EMAIL PROTECTED] SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."
