Source module last modified on Thu, 2 Jul 1998, 23:17;
HTML image of Fortran source automatically generated by
for2html on Sun, 23 Jun 2002, 15:10.
subroutine csscal(n,sa,cx,incx)
#
# scales a complex vector by a real constant.
# 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(*)
#
complex cx(*)
real sa
integer i,incx,n,nincx
#
if( n<=0 || incx<=0 )return
if(incx==1)go to 20
#
# code for increment not equal to 1
#
nincx = n*incx
do 10 i = 1,nincx,incx
cx(i) = cmplx(sa*real(cx(i)),sa*aimag(cx(i)))
10 continue
return
#
# code for increment equal to 1
#
20 do 30 i = 1,n
cx(i) = cmplx(sa*real(cx(i)),sa*aimag(cx(i)))
30 continue
return
end