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lascl2 - lascl2: diagonal scale matrix, A = D A

Author

Generated automatically by Doxygen for LAPACK from the source code. Version 3.12.0 Sun Jul 20 2025 01:40:05 lascl2(3)

Detailed Description

Function Documentation

subroutineclascl2(integerm,integern,real,dimension(*)d,complex,dimension(ldx,*)x,integerldx)CLASCL2 performs diagonal scaling on a matrix. Purpose: CLASCL2 performs a diagonal scaling on a matrix: x <-- D * x where the diagonal REAL matrix D is stored as a matrix. Eventually to be replaced by BLAS_cge_diag_scale in the new BLAS standard. ParametersM M is INTEGER The number of rows of D and X. M >= 0. N N is INTEGER The number of columns of X. N >= 0. D D is REAL array, length M Diagonal matrix D, stored as a vector of length M. X X is COMPLEX array, dimension (LDX,N) On entry, the matrix X to be scaled by D. On exit, the scaled matrix. LDX LDX is INTEGER The leading dimension of the matrix X. LDX >= M. Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. subroutinedlascl2(integerm,integern,doubleprecision,dimension(*)d,doubleprecision,dimension(ldx,*)x,integerldx)DLASCL2 performs diagonal scaling on a matrix. Purpose: DLASCL2 performs a diagonal scaling on a matrix: x <-- D * x where the diagonal matrix D is stored as a vector. Eventually to be replaced by BLAS_dge_diag_scale in the new BLAS standard. ParametersM M is INTEGER The number of rows of D and X. M >= 0. N N is INTEGER The number of columns of X. N >= 0. D D is DOUBLE PRECISION array, length M Diagonal matrix D, stored as a vector of length M. X X is DOUBLE PRECISION array, dimension (LDX,N) On entry, the matrix X to be scaled by D. On exit, the scaled matrix. LDX LDX is INTEGER The leading dimension of the matrix X. LDX >= M. Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. subroutineslascl2(integerm,integern,real,dimension(*)d,real,dimension(ldx,*)x,integerldx)SLASCL2 performs diagonal scaling on a matrix. Purpose: SLASCL2 performs a diagonal scaling on a matrix: x <-- D * x where the diagonal matrix D is stored as a vector. Eventually to be replaced by BLAS_sge_diag_scale in the new BLAS standard. ParametersM M is INTEGER The number of rows of D and X. M >= 0. N N is INTEGER The number of columns of X. N >= 0. D D is REAL array, length M Diagonal matrix D, stored as a vector of length M. X X is REAL array, dimension (LDX,N) On entry, the matrix X to be scaled by D. On exit, the scaled matrix. LDX LDX is INTEGER The leading dimension of the matrix X. LDX >= M. Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. subroutinezlascl2(integerm,integern,doubleprecision,dimension(*)d,complex*16,dimension(ldx,*)x,integerldx)ZLASCL2 performs diagonal scaling on a matrix. Purpose: ZLASCL2 performs a diagonal scaling on a matrix: x <-- D * x where the DOUBLE PRECISION diagonal matrix D is stored as a vector. Eventually to be replaced by BLAS_zge_diag_scale in the new BLAS standard. ParametersM M is INTEGER The number of rows of D and X. M >= 0. N N is INTEGER The number of columns of X. N >= 0. D D is DOUBLE PRECISION array, length M Diagonal matrix D, stored as a vector of length M. X X is COMPLEX*16 array, dimension (LDX,N) On entry, the matrix X to be scaled by D. On exit, the scaled matrix. LDX LDX is INTEGER The leading dimension of the matrix X. LDX >= M. Author Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd.

Name

lascl2 - lascl2: diagonal scale matrix, A = D A

Synopsis

Functions subroutine clascl2 (m, n, d, x, ldx) CLASCL2 performs diagonal scaling on a matrix. subroutine dlascl2 (m, n, d, x, ldx) DLASCL2 performs diagonal scaling on a matrix. subroutine slascl2 (m, n, d, x, ldx) SLASCL2 performs diagonal scaling on a matrix. subroutine zlascl2 (m, n, d, x, ldx) ZLASCL2 performs diagonal scaling on a matrix.

See Also