File: interleave63.f90

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wsjtx 2.6.1%2Brepack-1
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subroutine interleave63(d1,idir)

! Interleave (idir=1) or de-interleave (idir=-1) the array d1.

  integer d1(0:6,0:8)
  integer d2(0:8,0:6)

  if(idir.ge.0) then
     do i=0,6
        do j=0,8
           d2(j,i)=d1(i,j)
        enddo
     enddo
     call move(d2,d1,63)
  else
     call move(d1,d2,63)
     do i=0,6
        do j=0,8
           d1(i,j)=d2(j,i)
        enddo
     enddo
  endif
         
  return
end subroutine interleave63