# slarscl2.f man page

slarscl2.f —

## Synopsis

### Functions/Subroutines

subroutine **slarscl2** (M, N, D, X, LDX)**SLARSCL2** performs reciprocal diagonal scaling on a vector.

## Function/Subroutine Documentation

### subroutine slarscl2 (integerM, integerN, real, dimension( * )D, real, dimension( ldx, * )X, integerLDX)

**SLARSCL2** performs reciprocal diagonal scaling on a vector.

**Purpose:**

SLARSCL2 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_sge_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 REAL array, length M Diagonal matrix D, stored as a vector of length M.

*X*X is REAL 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 91 of file slarscl2.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

slarscl2(3) is an alias of slarscl2.f(3).

Sat Nov 16 2013 Version 3.4.2 LAPACK