C Library Functions - dscal (3)
NAME
dscal(3f) - [BLAS:DOUBLE_BLAS_LEVEL1] scales a vector by a constant.
CONTENTS
Synopsis
Definition
Options
Authors
Further Details
See Also
SYNOPSIS
subroutine dscal(n,da,dx,incx)
.. Scalar Arguments .. double precision,intent(in) :: da integer,intent(in) :: incx,n .. .. Array Arguments .. double precision,intent(inout) :: dx(*) ..
DEFINITION
DSCAL scales a vector by a constant. uses unrolled loops for increment equal to 1.
OPTIONS
N
number of elements in input vector(s)
DA
On entry, DA specifies the scalar alpha.
DX
array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
INCX
storage spacing between elements of DX
AUTHORS
o Univ. of Tennessee o Univ. of California Berkeley o Univ. of Colorado Denver o 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(*)
SEE ALSO
Online html documentation available at http://www.netlib.org/lapack/explore-html/
| Nemo Release 3.1 | dscal (3) | February 23, 2025 |
