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c===========================================================================
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c This file is part of TISEAN
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c Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
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c TISEAN is free software; you can redistribute it and/or modify
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c it under the terms of the GNU General Public License as published by
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c the Free Software Foundation; either version 2 of the License, or
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c (at your option) any later version.
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c TISEAN is distributed in the hope that it will be useful,
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c but WITHOUT ANY WARRANTY; without even the implied warranty of
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c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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c GNU General Public License for more details.
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c You should have received a copy of the GNU General Public License
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c along with TISEAN; if not, write to the Free Software
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c Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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c===========================================================================
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c box assisted sorting/ranking utilities
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c author T. Schreiber (1998) based on earlier versions
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c===========================================================================
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subroutine rank(nmax,x,list)
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parameter(nptr=100000)
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dimension x(nmax), list(nmax), jptr(0:nptr)
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call minmax(nmax,x,xmin,xmax)
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if(abs(xmin-xmax).lt.12E-39) then
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if ((ip.eq.0).or.(xn.le.x(ip))) then
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if ((ip.gt.0).and.(xn.gt.x(ip))) goto 1
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2 if (ip.eq.0) goto 40
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subroutine indexx(nmax,x,list)
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c make index table using rank
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dimension x(nmax), list(nmax)
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call rank(nmax,x,list)
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call rank2index(nmax,list)
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subroutine rank2index(nmax,list)
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c converts a list of ranks into an index table (or vice versa) in place
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if(list(n).gt.0) goto 20 ! has been put in place already
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subroutine sort(nmax,x,list)
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c sort using rank and rank2sort
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dimension x(nmax), list(nmax)
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call rank(nmax,x,list)
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call rank2sort(nmax,x,list)
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subroutine rank2sort(nmax,x,list)
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c sort x using list of ranks
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dimension x(nmax), list(nmax)
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if(list(n).gt.0) goto 20 ! has been put in place already
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subroutine index2sort(nmax,x,list)
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c sort x using list of indices
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dimension x(nmax), list(nmax)
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if(list(n).gt.0) goto 20 ! has been put in place already
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function which(nmax,x,k,list)
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dimension x(nmax), list(nmax)
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call indexx(nmax,x,list)