title: How to compare two vectors using SIMD and get a single boolean result?
body: <p>I have two vectors of 4 integers each and I'd like to use a SIMD command to compare them (say generate a result vector where each entry is 0 or 1 according to the result of the comparison).</p>
  
  <p>Then, I'd like to compare the result vector to a vector of 4 zeros and only if they're equal do something.</p>
  
  <p>Do you know what SIMD commands I can use to do it?</p>