# dlarscl2.f man page

dlarscl2.f

## Synopsis

### Functions/Subroutines

subroutine **dlarscl2** (M, **N**, D, X, LDX)**DLARSCL2** performs reciprocal diagonal scaling on a vector.

## Function/Subroutine Documentation

### subroutine dlarscl2 (integer M, integer N, double precision, dimension( * ) D, double precision, dimension( ldx, * ) X, integer LDX)

**DLARSCL2** performs reciprocal diagonal scaling on a vector.

**Purpose:**

DLARSCL2 performs a reciprocal diagonal scaling on an vector: 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*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 vector X to be scaled by D. On exit, the scaled vector.

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

**Author:**Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**June 2016

Definition at line 92 of file dlarscl2.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page dlarscl2(3) is an alias of dlarscl2.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK