File: wmul.f

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scilab 2.6-4
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      subroutine wmul(ar,ai,br,bi,cr,ci)
c     Copyright INRIA
      double precision ar,ai,br,bi,cr,ci,t
c     c = a*b
      t = ar*bi + ai*br
      cr = ar*br - ai*bi
      ci = t
      return
      end