title: memcmp - is there a faster way to bitwise compare two buffers
body: <p>I want to most quickly &amp; efficiently find out if two memory buffers - holding arbitrarily defined values - are identical in a bitwise comparision.</p>
  
  <p>I'm not interested in anything but the Boolean "is identical" and I want the method to return as quickly as possible, i.e. at first difference found.</p>
  
  <p>What is the best way to achieve this?
  I'm currenlty first comparing the overall size - which I know - and use 
  <code>memcmp</code> if they are of same size</p>
  
  <pre><code>memcmp( buf1_ptr, buf2_ptr, sizeof(buf1) )
  </code></pre>
  
  <p>Is this the most efficient I can do? Should I split the comparison into junks of a for-loop? </p>