cedures with <code>u64</code> in their names deal with the unsigned representation, those with <code>s64</code> with the two's complement representation.</p><p>The procedures with <code>native</code> in their names employ the native endianness, and only work at aligned indices: <var>k</var> must be a multiple of 8.  It is an error to use them at non-aligned indices.</p></dd><dt><code>(blob=? </code><var>blob-1</var> <var>blob-2</var><code>)</code></dt><dd><p>Returns <var>#t</var> if <var>blob-1</var> and <v