locating a 1Mi bit needle near the end of a 1GiB buffer of random bits

Have you considered that using random test data may not be a good idea. You are never going to generate the performance-degrading worst cases.

For instance, it is very unlikely that you will find partial needle matches longer than a few bits.

In reply to Re^7: [OT] The interesting problem of comparing bit-strings. by salva
in thread [OT] The interesting problem of comparing bit-strings. by BrowserUk

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