File: dgee01.f

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C/MEMBR ADD NAME=DGEE01,SSI=0
      double precision function dgee01(k,n,m,x)
c!purpose
c   function to calculate the lagrange interpolation
c   coefficients for use in the function gee.
c!
      dimension x(*)
      double precision dev,x
      double precision q
      double precision pi2
      common /rem001/ pi2,dev,nfcns,ngrid
c
      d=1.0d+0
      q=x(k)
      do 3 l=1,m
      do 2 j=l,n,m
      if(j-k)1,2,1
    1 d=2.0d+0*d*(q-x(j))
    2 continue
    3 continue
      dgee01=1.0d+0/d
      return
      end