 LAPACK  3.9.0 LAPACK: Linear Algebra PACKage

## ◆ clascl2()

 subroutine clascl2 ( integer M, integer N, real, dimension( * ) D, complex, dimension( ldx, * ) X, integer LDX )

CLASCL2 performs diagonal scaling on a vector.

Purpose:
``` CLASCL2 performs a diagonal scaling on a vector:
x <-- D * x
where the diagonal REAL matrix D is stored as a vector.

Eventually to be replaced by BLAS_cge_diag_scale in the new BLAS
standard.```
Parameters
 [in] M ``` M is INTEGER The number of rows of D and X. M >= 0.``` [in] N ``` N is INTEGER The number of columns of X. N >= 0.``` [in] D ``` D is REAL array, length M Diagonal matrix D, stored as a vector of length M.``` [in,out] X ``` X is COMPLEX array, dimension (LDX,N) On entry, the vector X to be scaled by D. On exit, the scaled vector.``` [in] LDX ``` LDX is INTEGER The leading dimension of the vector X. LDX >= M.```
Date
June 2016

Definition at line 93 of file clascl2.f.

93 *
94 * -- LAPACK computational routine (version 3.7.0) --
95 * -- LAPACK is a software package provided by Univ. of Tennessee, --
96 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
97 * June 2016
98 *
99 * .. Scalar Arguments ..
100  INTEGER M, N, LDX
101 * ..
102 * .. Array Arguments ..
103  REAL D( * )
104  COMPLEX X( LDX, * )
105 * ..
106 *
107 * =====================================================================
108 *
109 * .. Local Scalars ..
110  INTEGER I, J
111 * ..
112 * .. Executable Statements ..
113 *
114  DO j = 1, n
115  DO i = 1, m
116  x( i, j ) = x( i, j ) * d( i )
117  END DO
118  END DO
119
120  RETURN
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