ZLARSCL2
Purpose
ZLARSCL2 performs a reciprocal diagonal scaling on an vector:
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.
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.
Arguments
| M |
(input) INTEGER
The number of rows of D and X. M >= 0.
|
| N |
(input) INTEGER
The number of columns of D and X. N >= 0.
|
| D |
(input) DOUBLE PRECISION array, length M
Diagonal matrix D, stored as a vector of length M.
|
| X |
(input/output) COMPLEX*16 array, dimension (LDX,N)
On entry, the vector X to be scaled by D.
On exit, the scaled vector. |
| LDX |
(input) INTEGER
The leading dimension of the vector X. LDX >= 0.
|