File: fout.f

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scilab 2.6-4
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      integer function fout(lsize,alpha,beta,s,p)
c     Copyright INRIA
      integer lsize
      double precision alpha,beta,s,p
c!purpose
c      this function checks if
c       the real root alpha/beta lies outside the unit disc
c       (if lsize=1)
c       the complex conjugate roots with sum s and product p lie
c       outside the unit disc (if lsize=2).
c      if so, fout=1, otherwise, fout=-1
c      in this function the parameter s is not referenced
c
c!calling sequence
c
c     integer function fout(lsize,alpha,beta,s,p)
c     integer lsize
c     double precision alpha,beta,s,p
c!auxiliary routines
c     abs (fortran)
c!
      fout=-1
      if(lsize.eq.2) go to 2
      if(abs(alpha).ge.abs(beta)) fout=1
      return
  2   if(abs(p).ge.1.) fout=1
      return
      end