# zlarscl2.f man page

zlarscl2.f —

## Synopsis

### Functions/Subroutines

subroutine **zlarscl2** (M, N, D, X, LDX)**ZLARSCL2** performs reciprocal diagonal scaling on a vector.

## Function/Subroutine Documentation

### subroutine zlarscl2 (integerM, integerN, double precision, dimension( * )D, complex*16, dimension( ldx, * )X, integerLDX)

**ZLARSCL2** performs reciprocal diagonal scaling on a vector.

**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.

**Parameters:**-
*M*M is INTEGER The number of rows of D and X. M >= 0.

*N*N is INTEGER The number of columns of D and 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 vector X to be scaled by D. On exit, the scaled vector.

*LDX*LDX is INTEGER The leading dimension of the vector X. LDX >= 0.

**Author:**-
Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**September 2012

Definition at line 92 of file zlarscl2.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

zlarscl2(3) is an alias of zlarscl2.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK