code: public static void multAddTransAB(ZMatrixRMaj a , ZMatrixRMaj b , ZMatrixRMaj c )
      {
          if( a.numCols >= EjmlParameters.CMULT_TRANAB_COLUMN_SWITCH ) {
              MatrixMatrixMult_ZDRM.multAddTransAB_aux(a,b,c,null);
          } else {
              MatrixMatrixMult_ZDRM.multAddTransAB(a,b,c);
          }
      }
docs: <p>
  Performs the following operation:<br>
  <br>
  c = c + a<sup>H</sup> * b<sup>H</sup><br>
  c<sub>ij</sub> = c<sub>ij</sub> + &sum;<sub>k=1:n</sub> { a<sub>ki</sub> * b<sub>jk</sub>}
  </p>
  
  @param a The left matrix in the multiplication operation. Not Modified.
  @param b The right matrix in the multiplication operation. Not Modified.
  @param c Where the results of the operation are stored. Modified.