Re: [PATCH] mask ADT: bitmap and bitop tweaks [1/22]

[Chris Friesen]

William Lee Irwin III wrote:
> On Mon, Mar 29, 2004 at 03:06:16PM -0800, Matthew Dobson wrote:
> > If we're
> > not assuming the unused bits are 0's, then we need to do this last word
> > special casing in bitmap_xor & bitmap_andnot, because they could set the
> > unused bits.  Or am I confused?
>
>
> No, not those two. xor of 0's is 0 again. and of 0 and anything is 0 again.

Huh?  Xor of 0 and 1 is 1.

Chris
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