# slaswp.f (3) - Linux Manuals

slaswp.f -

## SYNOPSIS

### Functions/Subroutines

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

## Function/Subroutine Documentation

### subroutine slaswp (integerN, real, dimension( lda, * )A, integerLDA, integerK1, integerK2, integer, dimension( * )IPIV, integerINCX)

SLASWP performs a series of row interchanges on a general rectangular matrix.

Purpose:

``` 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.
```

Parameters:

N

```          N is INTEGER
The number of columns of the matrix A.
```

A

```          A is 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

```          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

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 slaswp.f.

## Author

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