42 lines
863 B
Fortran
42 lines
863 B
Fortran
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program prob
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implicit real*8 (a-h,o-z)
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integer*8 binomial
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integer x,s,XX,NN
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real*8 hypergeo
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character arg*8
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nargs=iargc()
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if(nargs.ne.4) then
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print*,'Usage: prob x N X s'
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print*,'Example: prob 35 63 40 40'
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go to 999
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endif
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call getarg(1,arg)
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read(arg,*) x
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call getarg(2,arg)
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read(arg,*) NN
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call getarg(3,arg)
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read(arg,*) XX
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call getarg(4,arg)
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read(arg,*) s
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! print*,binomial(5, 3) ! 10
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! print*,binomial(40, 19) ! 131282408400
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write(*,1010) x,NN,XX,s
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1010 format(//' x=',i2,' N=',i2,' X=',i2,' s=',i2)
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write(*,1012)
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1012 format(/' x P(x|N,X,s) P(>=x|N,X,s) '/ &
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'-------------------------------')
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hsum=0.d0
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do ix=x,XX
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h=hypergeo(ix,NN,XX,s)
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hsum=hsum + h
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write(*,1020) ix,h,hsum
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1020 format(i3,2d13.4)
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enddo
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999 end program prob
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