zlascl2 (l) - Linux Manuals

zlascl2: performs a diagonal scaling on a vector

NAME

ZLASCL2 - performs a diagonal scaling on a vector

SYNOPSIS

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.

Pages related to zlascl2

  • zlascl2 (3)
  • zlascl (l) - multiplies the M by N complex matrix A by the real scalar CTO/CFROM
  • zlaset (l) - initializes a 2-D array A to BETA on the diagonal and ALPHA on the offdiagonals
  • zlasr (l) - applies a sequence of real plane rotations to a complex matrix A, from either the left or the right
  • zlassq (l) - returns the values scl and ssq such that ( scl**2 )*ssq = x( 1 )**2 +...+ x( n )**2 + ( scale**2 )*sumsq,
  • zlaswp (l) - performs a series of row interchanges on the matrix A
  • zlasyf (l) - computes a partial factorization of a complex symmetric matrix A using the Bunch-Kaufman diagonal pivoting method
  • zla_gbamv (l) - performs one of the matrix-vector operations y := alpha*abs(A)*abs(x) + beta*abs(y),