redhat man page for dlaswp

DLASWP(l)								 )								 DLASWP(l)

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

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

	   INTEGER	  INCX, K1, K2, LDA, N

	   INTEGER	  IPIV( * )

	   DOUBLE	  PRECISION A( LDA, * )

PURPOSE
       DLASWP 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) DOUBLE PRECISION 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.

FURTHER DETAILS
       Modified by
	R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA

LAPACK version 3.0						   15 June 2000 							 DLASWP(l)