More or less, yeah. 

[         0.033410] needle 512, haystack 134217216 bytes
[         0.000030] rot 5 at 8000007; bitoff=64000061
[         0.000017] needle stuffed!
[         0.000644] search=64000061

[download]
I see your table lists "2.483719e-001" for the corresponding case. Brute force appears to be >300 times slower (0.2483719/0.000644).

Looks like { M = 16384, logM = 14 } case is the fastestfaster, with tables weighing in at 64KB. Beyond that, slowdown. (0.2784286/0.000236 == ~1180). Even bigger needles/tables may be quicker still.

In reply to Re^4: [OT] The interesting problem of comparing (long) bit-strings. by oiskuu
in thread [OT] The interesting problem of comparing bit-strings. by BrowserUk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.