claswp-f(3)

claswp.f –

Synopsis

Functions/Subroutines

subroutine claswp (N, A, LDA, K1, K2, IPIV, INCX)
CLASWP performs a series of row interchanges on a general rectangular matrix.

Function/Subroutine Documentation

subroutine claswp (integerN, complex, dimension( lda, * )A, integerLDA, integerK1, integerK2, integer, dimension( * )IPIV, integerINCX)

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

 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
 The last element of IPIV for which a row interchange will
 be done.

IPIV

 IPIV is 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

 INCX is INTEGER
 The increment between successive values of IPIV. If IPIV
 is negative, the pivots are applied in reverse order.

 

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

September 2012

Further Details:

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

 

Definition at line 115 of file claswp.f.

Author

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