ower triangular part L is given.

</PRE>
<B>Input/Output Parameters</B>
<PRE>
  N       (input) INTEGER
          The order of the triangular matrices U or L.  N &gt;= 0.

  A       (input/output) DOUBLE PRECISION array, dimension (LDA,N)
          On entry, if UPLO = 'U', the leading N-by-N upper
          triangular part of this array must contain the upper
          triangular matrix U.
          On entry, if UPLO = 'L', the leading N-by-N lower
          triangular part of this array must contain the lo