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