40 lines
808 B
Plaintext
40 lines
808 B
Plaintext
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subroutine interleave9(ia,ndir,ib)
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integer*1 ia(0:205),ib(0:205)
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integer j0(0:205)
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logical first
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data first/.true./
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save first,j0 !Save not working, or j0 overwritten ???
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if(first) then
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k=-1
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do i=0,255
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m=i
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n=iand(m,1)
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n=2*n + iand(m/2,1)
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n=2*n + iand(m/4,1)
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n=2*n + iand(m/8,1)
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n=2*n + iand(m/16,1)
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n=2*n + iand(m/32,1)
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n=2*n + iand(m/64,1)
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n=2*n + iand(m/128,1)
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if(n.le.205) then
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k=k+1
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j0(k)=n
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endif
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enddo
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! first=.false.
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endif
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if(ndir.gt.0) then
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do i=0,205
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ib(j0(i))=ia(i)
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enddo
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else
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do i=0,205
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ib(i)=ia(j0(i))
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enddo
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endif
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return
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end subroutine interleave9
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