title: xcode passing pointers to a method
body: <p>My knowledge of code just doesn't go this deep, and I have no idea where to look.</p>
  
  <pre><code>- (void) testResult: (Float32 *) levels lightLevel: (Float32 *) lightLevel;
  </code></pre>
  
  <p>It is required that the levels and lightLevel data pointers passed to this method point to pre-allocated storage holding any array of 2 Float32 values.</p>
  
  <p>How would I retrieve these values? </p>
  
  <p>Thank you.</p>