SLA_PORCOND Estimates the Skeel condition number of  op(A) * op2(C)
    where op2 is determined by CMODE as follows
    CMODE =  1    op2(C) = C
    CMODE =  0    op2(C) = I
    CMODE = -1    op2(C) = inv(C)
    The Skeel condition number  cond(A) = norminf( |inv(A)||A| )
    is computed by computing scaling factors R such that
    diag(R)*A*op2(C) is row equilibrated and computing the standard
    infinity-norm condition number.

          UPLO is CHARACTER*1
       = 'U':  Upper triangle of A is stored;
       = 'L':  Lower triangle of A is stored.

          N is INTEGER
     The number of linear equations, i.e., the order of the
     matrix A.  N >= 0.

          A is REAL array, dimension (LDA,N)
     On entry, the N-by-N matrix A.

          LDA is INTEGER
     The leading dimension of the array A.  LDA >= max(1,N).

          AF is REAL array, dimension (LDAF,N)
     The triangular factor U or L from the Cholesky factorization
     A = U**T*U or A = L*L**T, as computed by SPOTRF.

          LDAF is INTEGER
     The leading dimension of the array AF.  LDAF >= max(1,N).

          CMODE is INTEGER
     Determines op2(C) in the formula op(A) * op2(C) as follows:
     CMODE =  1    op2(C) = C
     CMODE =  0    op2(C) = I
     CMODE = -1    op2(C) = inv(C)

          C is REAL array, dimension (N)
     The vector C in the formula op(A) * op2(C).

          INFO is INTEGER
       = 0:  Successful exit.
     i > 0:  The ith argument is invalid.

          WORK is REAL array, dimension (3*N).
     Workspace.

          IWORK is INTEGER array, dimension (N).
     Workspace.