slascl2 (3p)

Name

slascl2 - perform diagonal scaling on a vector

Synopsis

SUBROUTINE SLASCL2 ( M, N, D, X, LDX )


INTEGER M, N, LDX

REAL D(*), X(LDX,*)


SUBROUTINE SLASCL2_64 ( M, N, D, X, LDX )


INTEGER*8 M, N, LDX

REAL D(*), X(LDX,*)


F95 INTERFACE
SUBROUTINE LASCL2 ( M, N, D, X, LDX )


REAL, DIMENSION(:,:) :: X

INTEGER :: M, N, LDX

REAL :: D


SUBROUTINE LASCL2_64 ( M, N, D, X, LDX )


REAL, DIMENSION(:,:) :: X

INTEGER(8) :: M, N, LDX

REAL :: D


C INTERFACE
#include <sunperf.h>

void slascl2 (int m, int n, float d, float *x, int ldx);


void slascl2_64 (long m, long n, float d, float *x, long ldx);

Description

Oracle Solaris Studio Performance Library                          slascl2(3P)



NAME
       slascl2 - perform diagonal scaling on a vector


SYNOPSIS
       SUBROUTINE SLASCL2 ( M, N, D, X, LDX )


       INTEGER M, N, LDX

       REAL D(*), X(LDX,*)


       SUBROUTINE SLASCL2_64 ( M, N, D, X, LDX )


       INTEGER*8 M, N, LDX

       REAL D(*), X(LDX,*)


   F95 INTERFACE
       SUBROUTINE LASCL2 ( M, N, D, X, LDX )


       REAL, DIMENSION(:,:) :: X

       INTEGER :: M, N, LDX

       REAL :: D


       SUBROUTINE LASCL2_64 ( M, N, D, X, LDX )


       REAL, DIMENSION(:,:) :: X

       INTEGER(8) :: M, N, LDX

       REAL :: D


   C INTERFACE
       #include <sunperf.h>

       void slascl2 (int m, int n, float d, float *x, int ldx);


       void slascl2_64 (long m, long n, float d, float *x, long ldx);


PURPOSE
       slascl2  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  stan-
       dard.


ARGUMENTS
       M (input)
                 M is INTEGER
                 The number of rows of D and X. M >= 0.


       N (input)
                 N is INTEGER
                 The number of columns of D and X. N >= 0.


       D (input)
                 D is REAL array, length M
                 Diagonal matrix D, stored as a vector of length M.


       X (input/output)
                 X is REAL array, dimension (LDX,N)
                 On entry, the vector X to be scaled by D.
                 On exit, the scaled vector.


       LDX (input)
                 LDX is INTEGER
                 The leading dimension of the vector X. LDX >= 0.




                                  7 Nov 2015                       slascl2(3P)