Interfacing function
eng

##
INTEGRAL_m

### File content

    function [x,y,typ]=INTEGRAL_m(job,arg1,arg2)
    // Copyright INRIA
    x=[];y=[];typ=[];
    select job
    case 'plot' then
      standard_draw(arg1)
    case 'getinputs' then
      [x,y,typ]=standard_inputs(arg1)
    case 'getoutputs' then
      [x,y,typ]=standard_outputs(arg1)
    case 'getorigin' then
      [x,y]=standard_origin(arg1)
    case 'set' then
      x=arg1;
      graphics=arg1.graphics;exprs=graphics.exprs
      model=arg1.model;
      while %t do
        [ok,x0,reinit,satur,maxp,lowp,exprs]=getvalue('Set Integral block parameters',..
    	['Initial Condition';
    	'With re-intialization (1:yes, 0:no)';'With saturation (1:yes, 0:no)';
    	'Upper limit';'Lower limit'],..
                    list('mat',[-1 -1],'vec',1,'vec',1,'mat',[-1 -1],'mat',[-1 -1]),exprs)
        if ~ok then break,end
        if isreal(x0) then Datatype=1; else Datatype=2; end;
        if reinit<>0 then reinit=1;end
        if satur<>0 then
          satur=1;
          if Datatype==1 then
             if size(maxp,'*')==1 then maxp=maxp*ones(x0),end
             if size(lowp,'*')==1 then lowp=lowp*ones(x0),end
             if (size(x0)<>size(maxp) | size(x0)<>size(lowp)) then
                 message('x0 and Upper limit and Lower limit must have same size')
                 ok=%f
             elseif or(maxp<=lowp)  then
                 message('Upper limits must be > Lower limits')
                 ok=%f
             elseif or(x0>maxp)|or(x0<lowp) then
                 message('Inital condition x0 should be inside the limits')
                 ok=%f
             else
                 rpar=[real(maxp(:));real(lowp(:))]
                 model.nzcross=size(x0,'*')
                 model.nmode=size(x0,'*')
             end
          elseif (Datatype==2) then
             if size(maxp,'*')==1 then maxp=maxp*ones(x0)+%i*(maxp*ones(x0)),end
             if size(lowp,'*')==1 then lowp=lowp*ones(x0)+%i*(lowp*ones(x0)),end
             if (size(x0)<>size(maxp) | size(x0)<>size(lowp)) then
                 message('x0 and Upper limit and Lower limit must have same size')
                 ok=%f
             elseif or(real(maxp)<=real(lowp))| or(imag(maxp)<=imag(lowp)) then
                 message('Upper limits must be > Lower limits')
                 ok=%f
             elseif or(real(x0)>real(maxp))|or(real(x0)<real(lowp))| or(imag(x0)>imag(maxp))|or(imag(x0)<imag(lowp)) then
                 message('Inital condition x0 should be inside the limits')
                 ok=%f
             else
    	     rpar=[real(maxp(:));real(lowp(:));imag(maxp(:));imag(lowp(:))]
                 model.nzcross=2*size(x0,'*')
                 model.nmode=2*size(x0,'*')
             end
           end
         else
           rpar=[]
           model.nzcross=0
           model.nmode=0
         end
         if ok then
           model.rpar=rpar
           if (Datatype==1) then
          	   model.state=real(x0(:))
          	   model.sim=list('integral_func',4)
          	   it=[1;ones(reinit,1)]
    	   ot=1;
           elseif (Datatype==2) then
          	   model.state=[real(x0(:));imag(x0(:))];
          	   model.sim=list('integralz_func',4)
          	   it=[2;2*ones(reinit,1)]
    	   ot=2;
           else message("Datatype is not supported");ok=%f;end
           if ok then
    	   in=[size(x0,1)*[1;ones(reinit,1)],size(x0,2)*[1;ones(reinit,1)]]
    	   out=size(x0)
               [model,graphics,ok]=set_io(model,graphics,list(in,it),list(out,ot),ones(reinit,1),[])
           end
         end
         if ok then
           graphics.exprs=exprs
           x.graphics=graphics;x.model=model
           break
         end
      end
    case 'define' then
      maxp=1;minp=-1;rpar=[]
      model=scicos_model()
      model.state=0
      model.sim=list('integral_func',4)
      model.in=1
      model.out=1
      model.in2=1
      model.out2=1
      model.rpar=rpar
      model.blocktype='c'
      model.dep_ut=[%f %t]

      exprs=string([0;0;0;maxp;minp])
      gr_i=['thick=xget(''thickness'')'
            'pat=xget(''pattern'')'
            'fnt=xget(''font'')'
            'xpoly(orig(1)+[0.7;0.62;0.549;0.44;0.364;0.291]*sz(1),orig(2)+[0.947;0.947;0.884;0.321;0.255;0.255]*sz(2),"'lines"')'
            'xset(''thickness'',thick)'
            'xset(''pattern'',pat)'
            'xset(''font'',fnt(1),fnt(2))'
           ]
      x=standard_define([2 2],model,exprs,gr_i)
      x.graphics.id="1/s"
    end
    endfunction