tation matrix Pc; perm_c[i] = j means column i of A is 
         in position j in A*Pc.</pre><p>
<pre> perm_r  (input) int*, dimension (L-&gt;nrow)
         Row permutation vector, which defines the permutation matrix Pr; 
         perm_r[i] = j means row i of A is in position j in Pr*A.</pre><p>
<pre> B       (input/output) SuperMatrix*
         B has types: Stype = SLU_DN, Dtype = SLU_Z, Mtype = SLU_GE.
         On entry, the right hand side matrix.
         On exit, the solution matrix if info = 0;</pre>