Mac binaries

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

diff --git a/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_f/randomize/cool/exp.f b/website/archive/binaries/mac/src/disembl/Tisean_3.0.1/source_f/randomize/cool/exp.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 randomize-package for constraint surrogates
+c   exponential cooling scheme
+c   author T. Schreiber (1999)
+c
+c-------------------------------------------------------------------
+c get options specific for cooling scheme
+C
+      subroutine opts_cool()
+      common /coolcom/ 
+     .   itini,tini,iafac,afac,cgoal,mtot,msucc,ntot,nsucc,mstop
+
+      tini=fcan("T",0.)
+      afac=fcan("a",0.)
+      mtot=ican("S",20000)
+      msucc=ican("s",2000)
+      mstop=ican("z",200)
+      cgoal=fcan("C",0.)
+      end
+
+c-------------------------------------------------------------------
+c print version information on cooling scheme
+C
+      subroutine what_cool()
+      call ptext("Cooling scheme: exponential")
+      end
+
+c-------------------------------------------------------------------
+c print usage message specific for cooling scheme
+C
+      subroutine usage_cool()
+      call ptext("Cooling options: [-T# -a# -S# -s# -z# -C#]")
+      call popt("T","initial temperature (auto)")
+      call popt("a","cooling factor (auto)")
+      call popt("S","total steps before cooling (20000)")
+      call popt("s","successful steps before cooling (2000)")
+      call popt("z","minimal successful steps before cooling (200)")
+      call popt("C","goal value of cost function (0.0)")
+      end
+
+c-------------------------------------------------------------------
+c initialise all that is needed for cooling scheme
+C
+      function cool_init()
+      common /coolcom/ 
+     .   itini,tini,iafac,afac,cgoal,mtot,msucc,ntot,nsucc,mstop
+
+      ntot=0
+      nsucc=0
+      itini=1
+      if(tini.eq.0.) then
+         tini=1e-4
+         itini=0
+      endif
+      iafac=1
+      if(afac.eq.0.) then
+         afac=0.5
+         iafac=0
+      endif
+      temp=tini
+      cool_init=temp
+      end
+      
+c-------------------------------------------------------------------
+c determine new temperature depending on current cost function,
+c acceptance status and history
+c par can be used to pass information to the permutation scheme
+c
+      function cool(iaccept,iend,iv)
+      common /coolcom/ 
+     .   itini,tini,iafac,afac,cgoal,mtot,msucc,ntot,nsucc,mstop
+      common nmax,cost,temp,cmin,rate
+
+      iend=0
+      cool=temp
+      nsucc=nsucc+iaccept
+      ntot=ntot+1
+      if(ntot.lt.mtot.and.nsucc.lt.msucc) return
+      rate=real(nsucc)/real(ntot)
+      iend=1
+      if(cost.le.cgoal) return
+      if(itini.eq.0.and.temp.eq.tini.and.ntot.gt.1.5*nsucc) then
+         tini=10*temp
+         if(iv.ne.0) write(istderr(),*) 
+     .      "increased initial temperature from ",
+     .      temp, " to ", tini, " for melting"
+         temp=tini
+      else if(nsucc.le.mstop) then
+         if(iafac.eq.1) return
+         afac=sqrt(afac)
+         mtot=mtot*sqrt(2.)
+         temp=tini
+         if(iv.ne.0) write(istderr(),*) "starting over: "
+         if(iv.ne.0) write(istderr(),*) "   Cooling rate: ", afac, 
+     .      " S:", mtot, " s: ", msucc
+      else         
+         temp=temp*afac
+         if(iv.ne.0) write(istderr(),
+     .      '(3hT: ,g15.6,4h S: ,i15,4h s: , i15,8h  cost: ,g15.6)') 
+     .      temp, ntot, nsucc, cost
+      endif
+      iend=0
+      ntot=0
+      nsucc=0
+      cool=temp
+      end
+