18. The method of claim 17 , wherein said weighting said signs of differences further comprises: representing said signs of differences as 2's-complement binary expressions in registers; and shifting bits in at least some of said registers.
17. The method of claim 1 , wherein said determining said relationship further comprises: determining signs of differences between corresponding portions of said first and second binary strings; weighting said signs of differences based, at least in part, on a significance of said corresponding portions of said first and second binary strings; and determining said relationship based, at least in part, on a sum of the weighted signs of differences.