mirror of https://github.com/saitohirga/WSJT-X.git
44 lines
751 B
Fortran
44 lines
751 B
Fortran
subroutine interleave4(id,ndir)
|
|
integer*1 id(0:205),itmp(0:205)
|
|
integer j0(0:205)
|
|
logical first
|
|
data first/.true./
|
|
save first,j0
|
|
|
|
if(first) then
|
|
k=-1
|
|
do i=0,255
|
|
m=i
|
|
n=iand(m,1)
|
|
n=2*n + iand(m/2,1)
|
|
n=2*n + iand(m/4,1)
|
|
n=2*n + iand(m/8,1)
|
|
n=2*n + iand(m/16,1)
|
|
n=2*n + iand(m/32,1)
|
|
n=2*n + iand(m/64,1)
|
|
n=2*n + iand(m/128,1)
|
|
if(n.le.205) then
|
|
k=k+1
|
|
j0(k)=n
|
|
endif
|
|
enddo
|
|
first=.false.
|
|
endif
|
|
|
|
if(ndir.eq.1) then
|
|
do i=0,205
|
|
itmp(j0(i))=id(i)
|
|
enddo
|
|
else
|
|
do i=0,205
|
|
itmp(i)=id(j0(i))
|
|
enddo
|
|
endif
|
|
|
|
do i=0,205
|
|
id(i)=itmp(i)
|
|
enddo
|
|
|
|
return
|
|
end subroutine interleave4
|