Messages in this thread |  | | Date | Wed, 10 Jan 2001 17:23:33 +0100 | From | Jamie Lokier <> | Subject | Re: * 4 converted to << 2 for networking code |
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Mike Harrold wrote: > Be careful. *4 is not a simple <<2 substitution (by the compiler) if > the variable is signed. *4 translates to 3 instructions (on x86) if > it's an int.
I think you mean /4 is not the same as >>2 if the variable is signed.
In general, non-widening multiplies give the same result for signed and unsigned variables.
-- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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