.TH "laswp" 3 "Wed Feb 7 2024 11:30:40" "Version 3.12.0" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
laswp \- laswp: swap permutation
.SH SYNOPSIS
.br
.PP
.SS "Functions"

.in +1c
.ti -1c
.RI "subroutine \fBclaswp\fP (n, a, lda, k1, k2, ipiv, incx)"
.br
.RI "\fBCLASWP\fP performs a series of row interchanges on a general rectangular matrix\&. "
.ti -1c
.RI "subroutine \fBdlaswp\fP (n, a, lda, k1, k2, ipiv, incx)"
.br
.RI "\fBDLASWP\fP performs a series of row interchanges on a general rectangular matrix\&. "
.ti -1c
.RI "subroutine \fBslaswp\fP (n, a, lda, k1, k2, ipiv, incx)"
.br
.RI "\fBSLASWP\fP performs a series of row interchanges on a general rectangular matrix\&. "
.ti -1c
.RI "subroutine \fBzlaswp\fP (n, a, lda, k1, k2, ipiv, incx)"
.br
.RI "\fBZLASWP\fP performs a series of row interchanges on a general rectangular matrix\&. "
.in -1c
.SH "Detailed Description"
.PP 

.SH "Function Documentation"
.PP 
.SS "subroutine claswp (integer n, complex, dimension( lda, * ) a, integer lda, integer k1, integer k2, integer, dimension( * ) ipiv, integer incx)"

.PP
\fBCLASWP\fP performs a series of row interchanges on a general rectangular matrix\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 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\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of columns of the matrix A\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          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\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
          The leading dimension of the array A\&.
.fi
.PP
.br
\fIK1\fP 
.PP
.nf
          K1 is INTEGER
          The first element of IPIV for which a row interchange will
          be done\&.
.fi
.PP
.br
\fIK2\fP 
.PP
.nf
          K2 is INTEGER
          (K2-K1+1) is the number of elements of IPIV for which a row
          interchange will be done\&.
.fi
.PP
.br
\fIIPIV\fP 
.PP
.nf
          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\&.
.fi
.PP
.br
\fIINCX\fP 
.PP
.nf
          INCX is INTEGER
          The increment between successive values of IPIV\&. If INCX
          is negative, the pivots are applied in reverse order\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP
\fBFurther Details:\fP
.RS 4

.PP
.nf
  Modified by
   R\&. C\&. Whaley, Computer Science Dept\&., Univ\&. of Tenn\&., Knoxville, USA
.fi
.PP
 
.RE
.PP

.SS "subroutine dlaswp (integer n, double precision, dimension( lda, * ) a, integer lda, integer k1, integer k2, integer, dimension( * ) ipiv, integer incx)"

.PP
\fBDLASWP\fP performs a series of row interchanges on a general rectangular matrix\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 DLASWP performs a series of row interchanges on the matrix A\&.
 One row interchange is initiated for each of rows K1 through K2 of A\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of columns of the matrix A\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          A is DOUBLE PRECISION 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\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
          The leading dimension of the array A\&.
.fi
.PP
.br
\fIK1\fP 
.PP
.nf
          K1 is INTEGER
          The first element of IPIV for which a row interchange will
          be done\&.
.fi
.PP
.br
\fIK2\fP 
.PP
.nf
          K2 is INTEGER
          (K2-K1+1) is the number of elements of IPIV for which a row
          interchange will be done\&.
.fi
.PP
.br
\fIIPIV\fP 
.PP
.nf
          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\&.
.fi
.PP
.br
\fIINCX\fP 
.PP
.nf
          INCX is INTEGER
          The increment between successive values of IPIV\&. If INCX
          is negative, the pivots are applied in reverse order\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP
\fBFurther Details:\fP
.RS 4

.PP
.nf
  Modified by
   R\&. C\&. Whaley, Computer Science Dept\&., Univ\&. of Tenn\&., Knoxville, USA
.fi
.PP
 
.RE
.PP

.SS "subroutine slaswp (integer n, real, dimension( lda, * ) a, integer lda, integer k1, integer k2, integer, dimension( * ) ipiv, integer incx)"

.PP
\fBSLASWP\fP performs a series of row interchanges on a general rectangular matrix\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 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\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of columns of the matrix A\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          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\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
          The leading dimension of the array A\&.
.fi
.PP
.br
\fIK1\fP 
.PP
.nf
          K1 is INTEGER
          The first element of IPIV for which a row interchange will
          be done\&.
.fi
.PP
.br
\fIK2\fP 
.PP
.nf
          K2 is INTEGER
          (K2-K1+1) is the number of elements of IPIV for which a row
          interchange will be done\&.
.fi
.PP
.br
\fIIPIV\fP 
.PP
.nf
          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\&.
.fi
.PP
.br
\fIINCX\fP 
.PP
.nf
          INCX is INTEGER
          The increment between successive values of IPIV\&. If INCX
          is negative, the pivots are applied in reverse order\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP
\fBFurther Details:\fP
.RS 4

.PP
.nf
  Modified by
   R\&. C\&. Whaley, Computer Science Dept\&., Univ\&. of Tenn\&., Knoxville, USA
.fi
.PP
 
.RE
.PP

.SS "subroutine zlaswp (integer n, complex*16, dimension( lda, * ) a, integer lda, integer k1, integer k2, integer, dimension( * ) ipiv, integer incx)"

.PP
\fBZLASWP\fP performs a series of row interchanges on a general rectangular matrix\&.  
.PP
\fBPurpose:\fP
.RS 4

.PP
.nf
 ZLASWP performs a series of row interchanges on the matrix A\&.
 One row interchange is initiated for each of rows K1 through K2 of A\&.
.fi
.PP
 
.RE
.PP
\fBParameters\fP
.RS 4
\fIN\fP 
.PP
.nf
          N is INTEGER
          The number of columns of the matrix A\&.
.fi
.PP
.br
\fIA\fP 
.PP
.nf
          A is COMPLEX*16 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\&.
.fi
.PP
.br
\fILDA\fP 
.PP
.nf
          LDA is INTEGER
          The leading dimension of the array A\&.
.fi
.PP
.br
\fIK1\fP 
.PP
.nf
          K1 is INTEGER
          The first element of IPIV for which a row interchange will
          be done\&.
.fi
.PP
.br
\fIK2\fP 
.PP
.nf
          K2 is INTEGER
          (K2-K1+1) is the number of elements of IPIV for which a row
          interchange will be done\&.
.fi
.PP
.br
\fIIPIV\fP 
.PP
.nf
          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\&.
.fi
.PP
.br
\fIINCX\fP 
.PP
.nf
          INCX is INTEGER
          The increment between successive values of IPIV\&. If INCX
          is negative, the pivots are applied in reverse order\&.
.fi
.PP
 
.RE
.PP
\fBAuthor\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP
\fBFurther Details:\fP
.RS 4

.PP
.nf
  Modified by
   R\&. C\&. Whaley, Computer Science Dept\&., Univ\&. of Tenn\&., Knoxville, USA
.fi
.PP
 
.RE
.PP

.SH "Author"
.PP 
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