LAPACK 3.12.1
LAPACK: Linear Algebra PACKage
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subroutine dlapmr | ( | logical | forwrd, |
integer | m, | ||
integer | n, | ||
double precision, dimension( ldx, * ) | x, | ||
integer | ldx, | ||
integer, dimension( * ) | k ) |
DLAPMR rearranges rows of a matrix as specified by a permutation vector.
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!> !> DLAPMR rearranges the rows of the M by N matrix X as specified !> by the permutation K(1),K(2),...,K(M) of the integers 1,...,M. !> If FORWRD = .TRUE., forward permutation: !> !> X(K(I),*) is moved X(I,*) for I = 1,2,...,M. !> !> If FORWRD = .FALSE., backward permutation: !> !> X(I,*) is moved to X(K(I),*) for I = 1,2,...,M. !>
[in] | FORWRD | !> FORWRD is LOGICAL !> = .TRUE., forward permutation !> = .FALSE., backward permutation !> |
[in] | M | !> M is INTEGER !> The number of rows of the matrix X. M >= 0. !> |
[in] | N | !> N is INTEGER !> The number of columns of the matrix X. N >= 0. !> |
[in,out] | 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. !> |
[in] | LDX | !> LDX is INTEGER !> The leading dimension of the array X, LDX >= MAX(1,M). !> |
[in,out] | K | !> K is INTEGER array, dimension (M) !> On entry, K contains the permutation vector. K is used as !> internal workspace, but reset to its original value on !> output. !> |
Definition at line 101 of file dlapmr.f.