!>
!> DGETC2 computes an LU factorization with complete pivoting of the
!> n-by-n matrix A. The factorization has the form A = P * L * U * Q,
!> where P and Q are permutation matrices, L is lower triangular with
!> unit diagonal elements and U is upper triangular.
!>
!> This is the Level 2 BLAS algorithm.
!> 

N

!>          N is INTEGER
!>          The order of the matrix A. N >= 0.
!> 

A

!>          A is DOUBLE PRECISION array, dimension (LDA, N)
!>          On entry, the n-by-n matrix A to be factored.
!>          On exit, the factors L and U from the factorization
!>          A = P*L*U*Q; the unit diagonal elements of L are not stored.
!>          If U(k, k) appears to be less than SMIN, U(k, k) is given the
!>          value of SMIN, i.e., giving a nonsingular perturbed system.
!> 

LDA

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

IPIV

!>          IPIV is INTEGER array, dimension(N).
!>          The pivot indices; for 1 <= i <= N, row i of the
!>          matrix has been interchanged with row IPIV(i).
!> 

JPIV

!>          JPIV is INTEGER array, dimension(N).
!>          The pivot indices; for 1 <= j <= N, column j of the
!>          matrix has been interchanged with column JPIV(j).
!> 

INFO

!>          INFO is INTEGER
!>           = 0: successful exit
!>           > 0: if INFO = k, U(k, k) is likely to produce overflow if
!>                we try to solve for x in Ax = b. So U is perturbed to
!>                avoid the overflow.
!> 

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Bo Kagstrom and Peter Poromaa, Department of Computing Science, Umea University, S-901 87 Umea, Sweden.