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LAPACK version 3.0
slaswp(3)

PURPOSE
  SLASWP - perform a series of row interchanges on the matrix A

SYNTAX
  SUBROUTINE SLASWP( N, A, LDA, K1, K2, IPIV, INCX )

      INTEGER	     INCX, K1, K2, LDA, N

      INTEGER	     IPIV( * )

      REAL	     A( LDA, * )

DESCRIPTION
  SLASWP 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) REAL 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