Source module last modified on Thu, 2 Jul 1998, 23:17;
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subroutine zdscal(n,da,zx,incx)
#
# scales a vector by a constant.
# jack dongarra, 3/11/78.
# modified 3/93 to return if incx .le. 0.
# modified 12/3/93, array(1) declarations changed to array(*)
#
double complex zx(*)
double precision da
integer i,incx,ix,n
#
if( n<=0 || incx<=0 )return
if(incx==1)go to 20
#
# code for increment not equal to 1
#
ix = 1
do 10 i = 1,n
zx(ix) = dcmplx(da,0.0d0)*zx(ix)
ix = ix + incx
10 continue
return
#
# code for increment equal to 1
#
20 do 30 i = 1,n
zx(i) = dcmplx(da,0.0d0)*zx(i)
30 continue
return
end