code: public static int cudnnSetLRNDescriptor(
          cudnnLRNDescriptor normDesc, 
          int lrnN, 
          double lrnAlpha, 
          double lrnBeta, 
          double lrnK)
      {
          return checkResult(cudnnSetLRNDescriptorNative(normDesc, lrnN, lrnAlpha, lrnBeta, lrnK));
      }
docs: <pre>
  Uses a window [center-lookBehind, center+lookAhead], where
  lookBehind = floor( (lrnN-1)/2 ), lookAhead = lrnN-lookBehind-1.
  Values of double parameters cast to tensor data type.
  </pre>