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Re: Boolean math: Fill in the blanks.

by repellent (Priest)
on Oct 12, 2008 at 01:55 UTC ( #716647=note: print w/ replies, xml ) Need Help??

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  1. or download this
    n  = total # bits per sample
    L1 = # bits   set on average on  left-side of AND/OR
    L0 = # bits unset on average on  left-side of AND/OR
       = n - L1
    R1 = # bits   set on average on right-side of AND/OR
  2. or download this
    AND : L1 * R1 / n
    OR  : L1 + L0 * R1 / n = L1 + (n - L1) * R1 / n
                           = L1 + R1 - L1  * R1 / n
                           = L1 * ( 1 - R1 / n ) + R1

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