docs: public static boolean cholL( DMatrix5x5 A ) {
  
          A.a11 = Math.sqrt(A.a11);
          A.a12 = 0;
          A.a13 = 0;
          A.a14 = 0;
          A.a15 = 0;
          A.a21 = (A.a21)/A.a11;
          A.a22 = Math.sqrt(A.a22-A.a21*A.a21);
          A.a23 = 0;
          A.a24 = 0;
          A.a25 = 0;
          A.a31 = (A.a31)/A.a11;
          A.a32 = (A.a32-A.a31*A.a21)/A.a22;
          A.a33 = Math.sqrt(A.a33-A.a31*A.a31-A.a32*A.a32);
          A.a34 = 0;
          A.a35 = 0;
          A.a41 = (A.a41)/A.a11;
          A.a42 = (A.a42-A.a41*A.a21)/A.a22;
          A.a43 = (A.a43-A.a41*A.a31-A.a42*A.a32)/A.a33;
          A.a44 = Math.sqrt(A.a44-A.a41*A.a41-A.a42*A.a42-A.a43*A.a43);
          A.a45 = 0;
          A.a51 = (A.a51)/A.a11;
          A.a52 = (A.a52-A.a51*A.a21)/A.a22;
          A.a53 = (A.a53-A.a51*A.a31-A.a52*A.a32)/A.a33;
          A.a54 = (A.a54-A.a51*A.a41-A.a52*A.a42-A.a53*A.a43)/A.a44;
          A.a55 = Math.sqrt(A.a55-A.a51*A.a51-A.a52*A.a52-A.a53*A.a53-A.a54*A.a54);
          return !UtilEjml.isUncountable(A.a55);
      }