zlascl23lapack
Performs a diagonal scaling on a vector
Usage
- SUBROUTINE ZLASCL2
-
( M, N, D, X, LDX )
- IMPLICIT
-
NONE
- INTEGER
-
M, N, LDX
- DOUBLE
-
PRECISION D( * )
- COMPLEX*16
-
X( LDX, * )
Purpose
ZLASCL2 performs a diagonal scaling on a vector:
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.
Arguments
The size of the vectors X and D.
- D (input) DOUBLE PRECISION array, length N
-
Diagonal matrix D, stored as a vector of length N. X (input/output) COMPLEX*16 array, length N On entry, the vector X to be scaled by D. On exit, the scaled vector.