title: How to force de-normals to zero in OpenCL on mac-min
body: <p>In CL 1.1 specification it is mentioned that compiler option <em>-cl-denorms-are-zero</em>  says  denormalized numbers may also be flushed to zero.</p>
  
  <p>I'm using CPU on mac-mini as my OpenCL device.
  Is there a way to force FTZ?</p>