table of contents
| larscl2(3) | LAPACK | larscl2(3) |
NAME¶
larscl2 - larscl2: reciprocal diagonal scale matrix, A = D^{-1} A
SYNOPSIS¶
Functions¶
subroutine clarscl2 (m, n, d, x, ldx)
CLARSCL2 performs reciprocal diagonal scaling on a matrix. subroutine
dlarscl2 (m, n, d, x, ldx)
DLARSCL2 performs reciprocal diagonal scaling on a matrix. subroutine
slarscl2 (m, n, d, x, ldx)
SLARSCL2 performs reciprocal diagonal scaling on a matrix. subroutine
zlarscl2 (m, n, d, x, ldx)
ZLARSCL2 performs reciprocal diagonal scaling on a matrix.
Detailed Description¶
Function Documentation¶
subroutine clarscl2 (integer m, integer n, real, dimension( * ) d, complex, dimension( ldx, * ) x, integer ldx)¶
CLARSCL2 performs reciprocal diagonal scaling on a matrix.
Purpose:
CLARSCL2 performs a reciprocal diagonal scaling on a matrix:
x <-- inv(D) * x
where the REAL diagonal matrix D is stored as a vector.
Eventually to be replaced by BLAS_cge_diag_scale in the new BLAS
standard.
Parameters
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 California Berkeley
Univ. of Colorado Denver
NAG Ltd.
subroutine dlarscl2 (integer m, integer n, double precision, dimension( * ) d, double precision, dimension( ldx, * ) x, integer ldx)¶
DLARSCL2 performs reciprocal diagonal scaling on a matrix.
Purpose:
DLARSCL2 performs a reciprocal diagonal scaling on a matrix:
x <-- inv(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 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, dimension (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 California Berkeley
Univ. of Colorado Denver
NAG Ltd.
subroutine slarscl2 (integer m, integer n, real, dimension( * ) d, real, dimension( ldx, * ) x, integer ldx)¶
SLARSCL2 performs reciprocal diagonal scaling on a matrix.
Purpose:
SLARSCL2 performs a reciprocal diagonal scaling on a matrix:
x <-- inv(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 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 California Berkeley
Univ. of Colorado Denver
NAG Ltd.
subroutine zlarscl2 (integer m, integer n, double precision, dimension( * ) d, complex*16, dimension( ldx, * ) x, integer ldx)¶
ZLARSCL2 performs reciprocal diagonal scaling on a matrix.
Purpose:
ZLARSCL2 performs a reciprocal diagonal scaling on a matrix:
x <-- inv(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 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 California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Author¶
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| Wed Feb 7 2024 11:30:40 | Version 3.12.0 |