claswp(3F)

NAME
     CLASWP - perform a series of row interchanges on the matrix A

SYNOPSIS
     SUBROUTINE CLASWP( N, A, LDA, K1, K2, IPIV, INCX )

         INTEGER        INCX, K1, K2, LDA, N

         INTEGER        IPIV( * )

         COMPLEX        A( LDA, * )

PURPOSE
     CLASWP performs a series of row interchanges on the matrix A.  One row
     interchange is initiated for each of rows K1 through K2 of A.


ARGUMENTS
     N       (input) INTEGER
             The number of columns of the matrix A.

     A       (input/output) COMPLEX array, dimension (LDA,N)
             On entry, the matrix of column dimension N to which the row
             interchanges will be applied.  On exit, the permuted matrix.

     LDA     (input) INTEGER
             The leading dimension of the array A.

     K1      (input) INTEGER
             The first element of IPIV for which a row interchange will be
             done.

     K2      (input) INTEGER
             The last element of IPIV for which a row interchange will be
             done.

     IPIV    (input) INTEGER array, dimension (M*abs(INCX))
             The vector of pivot indices.  Only the elements in positions K1
             through K2 of IPIV are accessed.  IPIV(K) = L implies rows K and
             L are to be interchanged.

     INCX    (input) INTEGER
             The increment between successive values of IPIV.  If IPIV is
             negative, the pivots are applied in reverse order.