File: bvodeS.sci

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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) Rainer von Seggern
// 
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution.  The terms
// are also available at    
// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt

function z=bvodeS(x,m,n,a,b,fsub,gsub,zeta,...
		  ystart,dfsub,dgsub,fixpnt,ndimf,ndimi,ltol,tol,ntol,nonlin,...
		  collpnt,subint,iprint,ireg,ifail)
  //
  // PURPOSE
  //   Simplified call of bvode. (Version 08.05.2005)
  //   List of arguments: see help bvode in Scilab.
  //   The arguments from ystart to ifail are optional. 
  //   They may be called by name in the form argument=name 
  //   in any order.
  //

  ms=sum(m);ipar=zeros(1,11);

  if n>20 then
    error(msprintf(_('%s: More than 20 equations are not allowed'),'bvodeS')); 
  end
  
  [lhs,rhs]=argn()
  if rhs<8 | rhs>23 then
    error(msprintf(gettext("%s: Wrong number of input argument(s).\n"), ...
		   'bvodeS'));
  end
  if min(m)<1 | max(m)>4 then
    error(msprintf(gettext("%s: The elements of the argument #%d must be in [%d %d].\n"),'bvodeS',2,1,4));
  end
  
  if exists('guess','local') then ystart=guess,end
  if ~exists('ystart','local') then
    %ys=%ystart1; iguess=0; 
  else 
    if and(type(ystart)<>[13 15 11]) then
        error(msprintf(gettext("%s: Wrong type for input argument #%s: external expected.\n"),'bvodeS','guess'));
    end
    %ys=%ystart;iguess=1;
  end
 
  if ~exists('dfsub','local') then
    dfsubA=%dfsub; 
  else 
    if and(type(ystart)<>[13 15 11]) then
      error(msprintf(gettext("%s: Wrong type for input argument #%s: external expected.\n"),'bvodeS','dfsub'));
    end
    dfsubA=%dfsub1; 
  end
  if ~exists('dgsub','local') then
    dgsubA=%dgsub; 
  else
    if and(type(ystart)<>[13 15 11]) then
      error(msprintf(gettext("%s: Wrong type for input argument #%s: external expected.\n"),'bvodeS','dgsub'));
    end
    dgsubA=%dgsub1; 
  end
  if ~exists('ltol','local')    then ltol=1:ms;           end
  if ~exists('tol','local')     then tol=1e-4*ones(1,ms); end
  if ~exists('ntol','local')    then ntol=length(tol);    end
  if ~exists('nonlin','local')  then nonlin=1;            end
  if ~exists('collpnt','local') then collpnt=0;           end
  if ~exists('subint','local')  then subint=0;            end
  if ~exists('iprint','local')  then iprint=-1;           end
  if ~exists('ireg','local')    then ireg = 0;            end
  
  if ~exists('ndimf','local') then
    ndimf=1000*(4+ms+(5+n*collpnt)*(ms+n*collpnt)+4*ms^2); 
  end
  
  if ~exists('ndimi','local') then
    ndimi=1000*(3+ms+n*collpnt); 
  end
  
  if ~exists('fixpnt','local') then
    fixpnt=[]; 
  else 
    ipar(11)=length(fixpnt); 
  end
  
  if ~exists('ifail','local') then 
    ifail=0; 
  else 
    ifail=1; 
  end

  ipar(1)=nonlin;
  ipar(2)=collpnt;
  ipar(3)=subint;
  ipar(4)=ntol;
  ipar(5)=ndimf;
  ipar(6)=ndimi;
  ipar(7)=iprint;
  ipar(9)=iguess;
  ipar(10)=ireg;

  if ifail==1 then
    mprintf("%s\n",['ltol   = '+sci2exp(ltol,0)
		    'tol    = '+sci2exp(tol,0)
		    'fixpnt = '+sci2exp(fixpnt,0)
		    'ipar   = '+sci2exp(ipar,0)])
  end

  z=bvode(x,n,m,a,b,zeta,ipar,ltol,tol,fixpnt,%fsub,dfsubA,%gsub,dgsubA,%ys);
  
endfunction

function y=%R(f_,x,z)
  if type(f_)==15 then
    R_=f_(1); y=R_(x,z,f_(2:$));
  elseif type(f_)==13 then
    y=f_(x,z)
  end
endfunction

function y=%fsub(x,z)
  y=%R(fsub,x,z); sy=size(y);
  if sy(1)==1, y=y', end
endfunction

function RS=%fsubT(z,x)
  RS=%fsub(x,z)
endfunction

function J=%dfsub(x,z)
  sz=size(z);if sz(1)==1, z=z'; end
  J=derivative(list(%fsubT,x),z)
endfunction

function J=%dfsub1(x,z)
  J=%R(dfsub,x,z)
endfunction

function g=%gsub(i,z)
  g=%R(gsub,i,z)
endfunction

function g=%gsubT(z,i)
  g=%gsub(i,z)
endfunction

function dg=%dgsub(i,z)
  sz=size(z);if sz(1)==1, z=z'; end
  dg=derivative(list(%gsubT,i),z)
endfunction

function dg=%dgsub1(i,z)
  dg=%R(dgsub,i,z)
endfunction

function [z,LhS]=%RR(f_,x)
  if type(f_)==15 then
    RR_=f_(1); [z,LhS]=RR_(x,f_(2:$));
  elseif type(f_)==13 then
    [z,LhS]=f_(x)
  end
endfunction

function [z,LhS]=%ystart(x)
  [z,LhS]=%RR(ystart,x)
endfunction

function [z,LS]=%ystart1(x), 
  z=0; LS=0; 
endfunction