LAPACK  3.4.2
LAPACK: Linear Algebra PACKage
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zlapmt.f File Reference

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

Function/Subroutine Documentation

subroutine zlapmt ( logical  FORWRD,
integer  M,
integer  N,
complex*16, dimension( ldx, * )  X,
integer  LDX,
integer, dimension( * )  K 

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

Download ZLAPMT + dependencies [TGZ] [ZIP] [TXT]
 ZLAPMT 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.
          FORWRD is LOGICAL
          = .TRUE., forward permutation
          = .FALSE., backward permutation
          M is INTEGER
          The number of rows of the matrix X. M >= 0.
          N is INTEGER
          The number of columns of the matrix X. N >= 0.
          X is COMPLEX*16 array, dimension (LDX,N)
          On entry, the M by N matrix X.
          On exit, X contains the permuted matrix X.
          LDX is INTEGER
          The leading dimension of the array X, LDX >= MAX(1,M).
          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
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
September 2012

Definition at line 105 of file zlapmt.f.

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