docs: public static double elementMaxAbs( DMatrix5x5 a ) {
          double max = Math.abs(a.a11);
          double tmp = Math.abs(a.a12); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a13); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a14); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a15); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a21); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a22); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a23); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a24); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a25); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a31); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a32); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a33); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a34); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a35); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a41); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a42); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a43); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a44); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a45); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a51); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a52); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a53); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a54); if( tmp > max ) max = tmp;
          tmp = Math.abs(a.a55); if( tmp > max ) max = tmp;
  
          return max;
      }