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69 lines
1.9 KiB
Fortran
69 lines
1.9 KiB
Fortran
subroutine pack28(c13,n28)
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! Pack a special token, a 24-bit hash code, or a valid base call into a 28-bit
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! integer.
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parameter (NTOKENS=4874084,N24=16777216)
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integer nc(6)
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character*13 c13
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character*6 callsign
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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=0
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callsign=c13(1:6)
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! Work-around for Swaziland prefix:
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if(c13(1:4).eq.'3DA0') callsign='3D0'//c13(5:7)
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! Work-around for Guinea prefixes:
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if(c13(1:2).eq.'3X' .and. c13(3:3).ge.'A' .and. &
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c13(3:3).le.'Z') callsign='Q'//c13(3:6)
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! if(callsign(1:3).eq.'CQ ') then
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! n28=1
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! if(callsign(4:4).ge.'0' .and. callsign(4:4).le.'9' .and. &
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! callsign(5:5).ge.'0' .and. callsign(5:5).le.'9' .and. &
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! callsign(6:6).ge.'0' .and. callsign(6:6).le.'9') then
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! read(callsign(4:6),*) nfreq
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! n28=3 + nfreq
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! endif
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! return
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! else if(callsign(1:4).eq.'QRZ ') then
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! n28=2
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! return
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! else if(callsign(1:3).eq.'DE ') then
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! n28=267796945
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! return
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! endif
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! We have a standard callsign
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n=len(trim(callsign))
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callsign=adjustr(callsign)
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i1=36*10*27*27*27*(index(c1,callsign(1:1))-1)
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i2=10*27*27*27*(index(c2,callsign(2:2))-1)
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i3=27*27*27*(index(c3,callsign(3:3))-1)
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i4=27*27*(index(c4,callsign(4:4))-1)
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i5=27*(index(c4,callsign(5:5))-1)
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i6=index(c4,callsign(6:6))-1
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n28=i1+i2+i3+i4+i5+i6
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! n28=index(c1,callsign(1:1))-1
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! n28=n28*nc(2) + index(c2,callsign(2:2)) - 1
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! n28=n28*nc(3) + index(c3,callsign(3:3)) - 1
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! n28=n28*nc(4) + index(c4,callsign(4:4)) - 1
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! n28=n28*nc(5) + index(c4,callsign(5:5)) - 1
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! n28=n28*nc(6) + index(c4,callsign(6:6)) - 1
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n28=n28 + NTOKENS + N24
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return
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end subroutine pack28
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