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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.

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