CLASWP(1) LAPACK auxiliary routine (version 3.2) CLASWP(1)NAME
CLASWP - performs a series of row interchanges on the matrix A
SUBROUTINE CLASWP( N, A, LDA, K1, K2, IPIV, INCX )
INTEGER INCX, K1, K2, LDA, N
INTEGER IPIV( * )
COMPLEX A( LDA, * )
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.
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
K2 (input) INTEGER
The last element of IPIV for which a row interchange will be
IPIV (input) INTEGER array, dimension (K2*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.
R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA
LAPACK auxiliary routine (versioNovember 2008 CLASWP(1)