metric matrices R, R,
          and X are given as follows:
          = 'U':  the upper triangular part is given;
          = 'L':  the lower triangular part is given.

  TRANS   CHARACTER*1
          Specifies the form of op( A ) to be used in the matrix
          multiplication as follows:
          = 'N':  op( A ) = A;
          = 'T':  op( A ) = A';
          = 'C':  op( A ) = A'.

</PRE>
<B>Input/Output Parameters</B>
<PRE>
  M       (input) INTEGER           _
          The order of the matrices R and