code: public static void elementMult( DMatrix5 a , DMatrix5 b , DMatrix5 c ) {
          c.a1 = a.a1*b.a1;
          c.a2 = a.a2*b.a2;
          c.a3 = a.a3*b.a3;
          c.a4 = a.a4*b.a4;
          c.a5 = a.a5*b.a5;
      }
docs: <p>Performs an element by element multiplication operation:<br>
  <br>
  c<sub>i</sub> = a<sub>i</sub> * b<sub>j</sub> <br>
  </p>
  @param a The left vector in the multiplication operation. Not modified.
  @param b The right vector in the multiplication operation. Not modified.
  @param c Where the results of the operation are stored. Modified.