Interfacing function
eng

##
INTRPLBLK_f

### File content

    function [x,y,typ]=INTRPLBLK_f(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,a,b,exprs]=getvalue('Set Interpolation block parameters',..
    	['X coord.';'Y coord.'],list('vec',-1,'vec',-1),exprs)
        if ~ok then break,end
        if size(a,'*') <> size(b,'*') then
          message('X and Y must have the same size')
        elseif min(a(2:$)-a(1:$-1)) <=0 then
          message('X must be strictly increasing')
        else
          if ok then
    	graphics.exprs=exprs
    	model.rpar=[a(:);b(:)]
    	x.graphics=graphics;x.model=model
    	break
          end
        end
      end
    case 'define' then
      a=[0;1];b=[0;1]
      model=scicos_model()
      model.sim='intrpl'
      model.in=1
      model.out=1
      model.rpar=[a;b]
      model.blocktype='c'
      model.dep_ut=[%t %f]

      exprs=[strcat(sci2exp(a));strcat(sci2exp(b))]
      gr_i=['xstringb(orig(1),orig(2),''interp'',sz(1),sz(2),''fill'');']
      x=standard_define([2 2],model,exprs,gr_i)
    end
    endfunction