part of this array must contain the
          coefficient matrix B of the equation.

  LDB     INTEGER
          The leading dimension of array B.  LDB &gt;= MAX(1,M).

  C       (input/output) DOUBLE PRECISION array, dimension (LDC,M)
          On entry, the leading N-by-M part of this array must
          contain the coefficient matrix C of the equation.
          On exit, if INFO = 0, the leading N-by-M part of this
          array contains the solution matrix X of the problem.

  LDC     INTEGER
       