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23 lines
368 B
Fortran
23 lines
368 B
Fortran
subroutine pctile(x,npts,npct,xpct)
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parameter (NMAX=100000)
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real*4 x(npts)
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real*4 tmp(NMAX)
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if(npts.le.0) then
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xpct=1.0
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go to 900
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endif
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if(npts.gt.NMAX) stop
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tmp(1:npts)=x
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call shell(npts,tmp)
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j=nint(npts*0.01*npct)
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if(j.lt.1) j=1
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if(j.gt.npts) j=npts
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xpct=tmp(j)
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900 continue
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return
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end subroutine pctile
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