C Library Functions - daxpy (3)
NAME
daxpy(3f) - [BLAS:DOUBLE_BLAS_LEVEL1] constant times a vector plus a vector.
CONTENTS
Synopsis
Definition
Options
Dy
Authors
Further Details
See Also
SYNOPSIS
subroutine daxpy(n,da,dx,incx,dy,incy)
.. Scalar Arguments .. double precision,intent(in) :: da integer,intent(in) :: incx,incy,n .. .. Array Arguments .. double precision,intent(in) :: dx(*) double precision,intent(inout) :: dy(*) ..
DEFINITION
DAXPY constant times a vector plus a vector. uses unrolled loops for increments equal to one.
OPTIONS
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
DY
DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) )
INCY
INCY is INTEGER storage spacing between elements of DY
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 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 | daxpy (3) | February 23, 2025 |
