title: Element wise multiplication between matrices in BLAS?
body: <p>Im starting to use BLAS functions in c++ (specifically intel MKL) to create faster versions of some of my old Matlab code.</p>
  
  <p>Its been working out well so far, but I cant figure out how to perform elementwise multiplication on 2 matrices (A .* B in Matlab). </p>
  
  <p>I know gemv does something similar between a matrix and a vector, so should I just break one of my matrices into vectprs and call gemv repeatedly? I think this would work, but I feel like there should be aomething built in for this operation.</p>
  
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