dlapmt.f man page

dlapmt.f —

Synopsis

Functions/Subroutines

subroutine dlapmt (FORWRD, M, N, X, LDX, K)
DLAPMT performs a forward or backward permutation of the columns of a matrix.

Function/Subroutine Documentation

subroutine dlapmt (logicalFORWRD, integerM, integerN, double precision, dimension( ldx, * )X, integerLDX, integer, dimension( * )K)

DLAPMT performs a forward or backward permutation of the columns of a matrix.

Purpose:

DLAPMT rearranges the columns of the M by N matrix X as specified
by the permutation K(1),K(2),...,K(N) of the integers 1,...,N.
If FORWRD = .TRUE.,  forward permutation:

     X(*,K(J)) is moved X(*,J) for J = 1,2,...,N.

If FORWRD = .FALSE., backward permutation:

     X(*,J) is moved to X(*,K(J)) for J = 1,2,...,N.

Parameters:

FORWRD

FORWRD is LOGICAL
= .TRUE., forward permutation
= .FALSE., backward permutation

M

M is INTEGER
The number of rows of the matrix X. M >= 0.

N

N is INTEGER
The number of columns of the matrix X. N >= 0.

X

X is DOUBLE PRECISION array, dimension (LDX,N)
On entry, the M by N matrix X.
On exit, X contains the permuted matrix X.

LDX

LDX is INTEGER
The leading dimension of the array X, LDX >= MAX(1,M).

K

K is INTEGER array, dimension (N)
On entry, K contains the permutation vector. K is used as
internal workspace, but reset to its original value on
output.

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

September 2012

Definition at line 105 of file dlapmt.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Referenced By

dlapmt(3) is an alias of dlapmt.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK