                 (if UPLO = 'U'), or lower (if UPLO = 'L').

</PRE>
<B>Input/Output Parameters</B>
<PRE>
  N       (input) INTEGER
          The order of the matrices R, A, and T.  N &gt;= 0.

  ALPHA   (input) DOUBLE PRECISION
          The scalar alpha. When alpha is zero then the arrays A
          and T are not referenced.

  BETA    (input) DOUBLE PRECISION
          The scalar beta. When beta is zero then the array R need
          not be set before entry.

  R       (input/output) DOUBLE PRECISION ar