.TH ZLAPMT 1 "November 2006" " LAPACK auxiliary routine (version 3.1) " " LAPACK auxiliary routine (version 3.1) " .SH NAME ZLAPMT - 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 .SH SYNOPSIS .TP 19 SUBROUTINE ZLAPMT( FORWRD, M, N, X, LDX, K ) .TP 19 .ti +4 LOGICAL FORWRD .TP 19 .ti +4 INTEGER LDX, M, N .TP 19 .ti +4 INTEGER K( * ) .TP 19 .ti +4 COMPLEX*16 X( LDX, * ) .SH PURPOSE 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: .br X(*,K(J)) is moved X(*,J) for J = 1,2,...,N. .br If FORWRD = .FALSE., backward permutation: .br X(*,J) is moved to X(*,K(J)) for J = 1,2,...,N. .br .SH ARGUMENTS .TP 8 FORWRD (input) LOGICAL = .TRUE., forward permutation = .FALSE., backward permutation .TP 8 M (input) INTEGER The number of rows of the matrix X. M >= 0. .TP 8 N (input) INTEGER The number of columns of the matrix X. N >= 0. .TP 8 X (input/output) COMPLEX*16 array, dimension (LDX,N) On entry, the M by N matrix X. On exit, X contains the permuted matrix X. .TP 8 LDX (input) INTEGER The leading dimension of the array X, LDX >= MAX(1,M). .TP 8 K (input/output) 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.