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73 lines
1.7 KiB
Fortran
73 lines
1.7 KiB
Fortran
subroutine unpack28(n28_0,c13)
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parameter (NTOKENS=2063592,MAX22=4194304)
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integer nc(6)
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character*13 c13
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character*37 c1
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character*36 c2
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character*10 c3
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character*27 c4
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data c1/' 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'/
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data c2/'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'/
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data c3/'0123456789'/
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data c4/' ABCDEFGHIJKLMNOPQRSTUVWXYZ'/
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data nc/37,36,19,27,27,27/
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n28=n28_0
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if(n28.lt.NTOKENS) then
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! Special tokens DE, QRZ, CQ, CQ_nnn, CQ_aaaa
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if(n28.eq.0) c13='DE '
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if(n28.eq.1) c13='QRZ '
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if(n28.eq.2) c13='CQ '
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if(n28.le.2) go to 900
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if(n28.le.1002) then
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write(c13,1002) n28-3
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1002 format('CQ_',i3.3)
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go to 900
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endif
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if(n28.le.532443) then
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n=n28-1003
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n0=n
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i1=n/(27*27*27)
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n=n-27*27*27*i1
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i2=n/(27*27)
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n=n-27*27*i2
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i3=n/27
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i4=n-27*i3
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c13=c4(i1+1:i1+1)//c4(i2+1:i2+1)//c4(i3+1:i3+1)//c4(i4+1:i4+1)
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c13=adjustl(c13)
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c13='CQ_'//c13(1:10)
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go to 900
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endif
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endif
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n28=n28-NTOKENS
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if(n28.lt.MAX22) then
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! This is a 22-bit hash of a callsign
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n22=n28
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call hash22(n22,c13,-1) !Retrieve callsign from hash table
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if(c13(1:1).ne.'<') then
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n=len(trim(c13))
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c13='<'//c13(1:n)//'>'//' '
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endif
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go to 900
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endif
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! Standard callsign
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n=n28 - MAX22
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i1=n/(36*10*27*27*27)
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n=n-36*10*27*27*27*i1
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i2=n/(10*27*27*27)
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n=n-10*27*27*27*i2
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i3=n/(27*27*27)
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n=n-27*27*27*i3
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i4=n/(27*27)
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n=n-27*27*i4
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i5=n/27
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i6=n-27*i5
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c13=c1(i1+1:i1+1)//c2(i2+1:i2+1)//c3(i3+1:i3+1)//c4(i4+1:i4+1)// &
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c4(i5+1:i5+1)//c4(i6+1:i6+1)//' '
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c13=adjustl(c13)
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900 return
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end subroutine unpack28
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