subroutine claswp (N, A, LDA, K1, K2, IPIV, INCX)
CLASWP performs a series of row interchanges on a general rectangular matrix.
CLASWP performs a series of row interchanges on a general rectangular matrix.
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.
Parameters:
N is INTEGER
The number of columns of the matrix A.
A
A is 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
LDA is INTEGER
The leading dimension of the array A.
K1
K1 is INTEGER
The first element of IPIV for which a row interchange will
be done.
K2
K2 is INTEGER
(K2-K1+1) is the number of elements of IPIV for which a row
interchange will be done.
IPIV
IPIV is INTEGER array, dimension (K1+(K2-K1)*abs(INCX))
The vector of pivot indices. Only the elements in positions
K1 through K1+(K2-K1)*abs(INCX) of IPIV are accessed.
IPIV(K1+(K-K1)*abs(INCX)) = L implies rows K and L are to be
interchanged.
INCX
INCX is INTEGER
The increment between successive values of IPIV. If INCX
is negative, the pivots are applied in reverse order.
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Further Details:
Modified by R. C. Whaley, Computer Science Dept., Univ. of Tenn., Knoxville, USA
Definition at line 117 of file claswp.f.
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