short circuit evaluation - some comments

[franka at mmintl.UUCP]

In article <1287 at ucbcad.berkeley.edu> faustus at ucbcad.UUCP writes:
>I think if you're being really careful, you can't optimize away any
>arithmetic operations, because there is always the possible side effect
>of an arithmetic exception or memory error.

Not quite true.  Consider "x // 4 + y // 4", where x and y have the same
integral type.  The "+" operation can neither overflow nor cause a memory
error.

Frank Adams                           ihnp4!philabs!pwa-b!mmintl!franka
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