f</code> retrieves the exact integer corresponding to the two's complement representation of size <var>size</var> and specified by <var>endianness</var> at indices {<var>k</var>, ..., <var>k</var> + <var>size</var> - 1}.</p><p>For <code>blob-uint-set!</code>, <var>n</var> must be an exact integer in the interval [0, (256^<var>size</var>)-1]. <code>Blob-uint-set!</code> stores the unsigned representation of size <var>size</var> and specified by <var>endianness</var> into the blob at indices {<var>k</var>, ..