Interfacing function
eng

##
MAXMIN

### File content

    function [x,y,typ]=MAXMIN(job,arg1,arg2)
      x=[];y=[];typ=[]
      select job
       case 'plot' then
        if arg1.model.ipar==1 then
          CCC='MIN'
        elseif arg1.model.ipar==2
          CCC='MAX'
        else
          CCC='Min/Max'
        end
        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,mm,nin,zcr,exprs]=..
    	  getvalue('Set Max/Min block parameters',..
    		   ['Min (1) or Max (2) ';'Number of input vectors (1 or 2)';'zero-crossing (1: yes, 0;no)'],..
    		    list('vec',1,'vec',1,'vec',1),exprs)
          if ~ok then break,end
          if zcr<>0 then zcr=-1, end
          if mm<>1 then mm=2,end
          if nin<>1 & nin<>2 then
    	message('Wrong number of inputs, only 1 and 2 allowed')
    	ok=%f
          end
          if ok then
    	if nin==1 then
    	  [model,graphics,ok]=check_io(model,graphics,-1,1,[],[])
    	else
    	  [model,graphics,ok]=check_io(model,graphics,[-1,-1],-1,[],[])
    	end
          end
          if ok then
    	model.nzcross=zcr;
    	if nin==1 then
    	  model.nmode=abs(zcr);
    	else
    	  model.nmode=zcr
    	end
    	model.ipar=mm;
    	graphics.exprs=exprs;
    	x.graphics=graphics;x.model=model;
    	break
          end
        end
       case 'define' then
        model=scicos_model()
        model.sim=list('minmax',4)
        model.out=1
        model.in=-1
        model.blocktype='c'
        model.dep_ut=[%t %f]
        model.ipar=0;
        exprs=[string([2,1,1]')]
        gr_i=['txt=[CCC];';
    	  'xstringb(orig(1),orig(2),txt,sz(1),sz(2),''fill'')']

        x=standard_define([2 2],model,exprs,gr_i)
      end
    endfunction