File: wdotci.f

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C/MEMBR ADD NAME=WDOTCI,SSI=0
c     Copyright INRIA
      double precision function wdotci(n,xr,xi,incx,yr,yi,incy)
      double precision xr(*),xi(*),yr(*),yi(*),s
      s = 0.0d+0
      if (n .le. 0) go to 20
      ix = 1
      iy = 1
      if (incx.lt.0) ix = (-n+1)*incx + 1
      if (incy.lt.0) iy = (-n+1)*incy + 1
      do 10 i = 1, n
         s = s + xr(ix)*yi(iy) - xi(ix)*yr(iy)
         ix = ix + incx
         iy = iy + incy
   10 continue
   20 wdotci = s
      return
      end