Source module last modified on Thu, 2 Jul 1998, 23:17;
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subroutine cscal(n,ca,cx,incx)
#
# scales a vector by a 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 ca,cx(*)
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) = ca*cx(i)
10 continue
return
#
# code for increment equal to 1
#
20 do 30 i = 1,n
cx(i) = ca*cx(i)
30 continue
return
end