Mac binaries

[jabaws.git] / website / archive / binaries / mac / src / disembl / Tisean_3.0.1 / source_f / randomize / perm / random.f

diff --git a/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_f/randomize/perm/random.f b/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_f/randomize/perm/random.f
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+c===========================================================================
+c
+c   This file is part of TISEAN
+c 
+c   Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
+c 
+c   TISEAN is free software; you can redistribute it and/or modify
+c   it under the terms of the GNU General Public License as published by
+c   the Free Software Foundation; either version 2 of the License, or
+c   (at your option) any later version.
+c
+c   TISEAN is distributed in the hope that it will be useful,
+c   but WITHOUT ANY WARRANTY; without even the implied warranty of
+c   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+c   GNU General Public License for more details.
+c
+c   You should have received a copy of the GNU General Public License
+c   along with TISEAN; if not, write to the Free Software
+c   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+c
+c===========================================================================
+c   part of the TISEAN randomize package for constraint surrogates
+c   permutation scheme that swaps to randomly chosen data points
+c   this may also be used as a template for your own attempts
+c   author T. Schreiber (1999)
+c
+c-------------------------------------------------------------------
+c get permutation specific options
+c
+      subroutine opts_permute()
+      parameter(nx=100000)
+      dimension nxclu(nx)
+      character*80 filex
+      common /permutecom/ mxclu, nxclu
+
+      call stcan('X',filex,' ')
+      mxclu=0
+      if(filex.eq." ") return
+      open(10,file=filex,status="old",err=999)
+ 1    read(10,*,err=999,end=998) nn
+      mxclu=mxclu+1
+      nxclu(mxclu)=nn
+      goto 1
+ 998  return
+ 999  write(istderr(),'(a)') "permute: cannot open "//filex
+      stop
+      end
+
+c-------------------------------------------------------------------
+c print version information on permutation scheme
+c
+      subroutine what_permute()
+      call ptext("Permutation scheme: random pairs")
+      end
+
+c-------------------------------------------------------------------
+c print permutation specific usage message
+c
+      subroutine usage_permute()
+      call ptext("Permutation options: [-X xfile]")
+      call popt("X", "list of indices excluded from permutation")
+      end
+
+c-------------------------------------------------------------------
+c initialise all that is needed for permutation scheme 
+c
+      subroutine permute_init()
+      parameter(nx=100000)
+      dimension x(nx)
+      common nmax,cost,temp,cmin,rate,x
+      
+      if(nmax.gt.nx) stop "permute: make nx larger."
+      do 10 i=1,nmax
+         call permute(n1,n2)
+ 10      call exch(n1,n2)
+      end
+
+c-------------------------------------------------------------------
+c find two indices n1, n2 to be exchanged, maybe using a parameter 
+c par provided by the cooling schedule
+c
+      subroutine permute(n1,n2)
+      parameter(nx=100000)
+      dimension nxclu(nx)
+      common /permutecom/ mxclu, nxclu
+      common nmax
+      external rand
+
+ 1    n1=min(int(rand(0.0)*nmax)+1,nmax)
+      do 10 n=1,mxclu
+ 10      if(n1.eq.nxclu(n)) goto 1
+ 2    n2=min(int(rand(0.0)*nmax)+1,nmax)
+      if(n2.eq.n1) goto 2
+      do 20 n=1,mxclu
+ 20      if(n2.eq.nxclu(n)) goto 2
+      end
+
+c-------------------------------------------------------------------
+c given two indices n1, n2, actually perform the exchange
+c
+      subroutine exch(n1,n2)
+      parameter(nx=100000)
+      dimension x(nx)
+      common nmax,cost,temp,cmin,rate,x
+
+      h=x(n1)
+      x(n1)=x(n2)
+      x(n2)=h
+      end