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<title>SSE2 Optimizations</title>
  
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<p class="Body">With the release 1.9.1 SSE2 optimizations have been introduced. 
  The optimizations are entirely based on the MMX optimizations and are meant
  to replace the MMX code for modern systems. The MMX code is only kept for
  backward compatibility.</p>
<p class="Body">The reason to favor SSE2 optimizations over MMX optimizations 
  is main