clapmt.f - Man Page
SRC/clapmt.f
Synopsis
Functions/Subroutines
subroutine clapmt (forwrd, m, n, x, ldx, k)
CLAPMT performs a forward or backward permutation of the columns of a matrix.
Function/Subroutine Documentation
subroutine clapmt (logical forwrd, integer m, integer n, complex, dimension( ldx, * ) x, integer ldx, integer, dimension( * ) k)
CLAPMT performs a forward or backward permutation of the columns of a matrix.
Purpose:
CLAPMT 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 COMPLEX 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.
Definition at line 103 of file clapmt.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Referenced By
The man page clapmt(3) is an alias of clapmt.f(3).
Tue Nov 28 2023 12:08:41 Version 3.12.0 LAPACK