DLASWP man page on IRIX

DLASWP man page on IRIX

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DLASWP(3F)							    DLASWP(3F)

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.

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