LAPACK  3.4.0
LAPACK: Linear Algebra PACKage
Functions/Subroutines
slaswp.f File Reference

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Functions/Subroutines

subroutine SLASWP (N, A, LDA, K1, K2, IPIV, INCX)
 SLASWP

Function/Subroutine Documentation

subroutine SLASWP ( INTEGER  N,
REAL, dimension( lda, * )  A,
INTEGER  LDA,
INTEGER  K1,
INTEGER  K2,
INTEGER, dimension( * )  IPIV,
INTEGER  INCX 
)

SLASWP

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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:
[in]N
          N is INTEGER
          The number of columns of the matrix A.
[in,out]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.
[in]LDA
          LDA is INTEGER
          The leading dimension of the array A.
[in]K1
          K1 is INTEGER
          The first element of IPIV for which a row interchange will
          be done.
[in]K2
          K2 is INTEGER
          The last element of IPIV for which a row interchange will
          be done.
[in]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.
[in]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:
November 2011
Further Details: 

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

Definition at line 115 of file slaswp.f.

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