sides and solutions.

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

  A       (input) DOUBLE PRECISION array, dimension (LDA,N)
          If FACT = 'N' or LYAPUN = 'O', the leading N-by-N part of
          this array must contain the matrix A.
          If FACT = 'F' and LYAPUN = 'R', A is not referenced.

  LDA     INTEGER
          The leading dimension of the array A.
          LDA &gt;= max(1,N), if FACT = 'N' or  L