2. EL 8
  3. blas
  4. dscal(3)

Scroll to navigation

dscal.f(3) LAPACK dscal.f(3)

NAME

dscal.f

SYNOPSIS

Functions/Subroutines


subroutine dscal (N, DA, DX, INCX)
DSCAL

Function/Subroutine Documentation

subroutine dscal (integer N, double precision DA, double precision, dimension(*) DX, integer INCX)

DSCAL

Purpose: 



    DSCAL scales a vector by a constant.


    uses unrolled loops for increment equal to 1.

Parameters:

N 



          N is INTEGER


         number of elements in input vector(s)

DA



          DA is DOUBLE PRECISION


           On entry, DA specifies the scalar alpha.

DX



          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX



          INCX is INTEGER


         storage spacing between elements of DX

Author:

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

November 2017

Further Details: 



     jack dongarra, linpack, 3/11/78.


     modified 3/93 to return if incx .le. 0.


     modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 81 of file dscal.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.

Tue Nov 14 2017 Version 3.8.0