lascl2(3) LAPACK lascl2(3)
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.
Detailed Description
Function Documentation
subroutine clascl2 (integer m, integer n, real, dimension( * ) d, complex,
dimension( ldx, * ) x, integer ldx)
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.
Parameters
M
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.
subroutine dlascl2 (integer m, integer n, double precision, dimension( * )
d, double precision, dimension( ldx, * ) x, integer ldx)
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.
Parameters
M
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.
subroutine slascl2 (integer m, integer n, real, dimension( * ) d, real,
dimension( ldx, * ) x, integer ldx)
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.
Parameters
M
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.
subroutine zlascl2 (integer m, integer n, double precision, dimension( * )
d, complex*16, dimension( ldx, * ) x, integer ldx)
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.
Parameters
M
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.
Author
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