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lapmr - lapmr: permute rows

Author

Generated automatically by Doxygen for LAPACK from the source code. Version 3.12.0 Thu Aug 7 2025 17:26:25 lapmr(3)

Detailed Description

Function Documentation

subroutineclapmr(logicalforwrd,integerm,integern,complex,dimension(ldx,*)x,integerldx,integer,dimension(*)k)CLAPMR rearranges rows of a matrix as specified by a permutation vector. Purpose: CLAPMR 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. ParametersFORWRD 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 (M) 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. subroutinedlapmr(logicalforwrd,integerm,integern,doubleprecision,dimension(ldx,*)x,integerldx,integer,dimension(*)k)DLAPMR rearranges rows of a matrix as specified by a permutation vector. Purpose: 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. ParametersFORWRD 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 (M) 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. subroutineslapmr(logicalforwrd,integerm,integern,real,dimension(ldx,*)x,integerldx,integer,dimension(*)k)SLAPMR rearranges rows of a matrix as specified by a permutation vector. Purpose: SLAPMR 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. ParametersFORWRD 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 REAL 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 (M) 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. subroutinezlapmr(logicalforwrd,integerm,integern,complex*16,dimension(ldx,*)x,integerldx,integer,dimension(*)k)ZLAPMR rearranges rows of a matrix as specified by a permutation vector. Purpose: ZLAPMR 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. ParametersFORWRD 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*16 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 (M) 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.

Name

lapmr - lapmr: permute rows

Synopsis

Functions subroutine clapmr (forwrd, m, n, x, ldx, k) CLAPMR rearranges rows of a matrix as specified by a permutation vector. subroutine dlapmr (forwrd, m, n, x, ldx, k) DLAPMR rearranges rows of a matrix as specified by a permutation vector. subroutine slapmr (forwrd, m, n, x, ldx, k) SLAPMR rearranges rows of a matrix as specified by a permutation vector. subroutine zlapmr (forwrd, m, n, x, ldx, k) ZLAPMR rearranges rows of a matrix as specified by a permutation vector.

See Also