LAPACK 3.11.0
LAPACK: Linear Algebra PACKage

◆ dscal()

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
[in]N
          N is INTEGER
         number of elements in input vector(s)
[in]DA
          DA is DOUBLE PRECISION
           On entry, DA specifies the scalar alpha.
[in,out]DX
          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
[in]INCX
          INCX is INTEGER
         storage spacing between elements of DX
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
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(*)