Interfacing function
eng

##
RAND_f

### File content

    function [x,y,typ]=RAND_f(job,arg1,arg2)
    // Copyright INRIA
    x=[];y=[];typ=[];
    select job
    case 'plot' then //normal  position
      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;
      if size(exprs,'*')==5 then exprs=exprs(1:3),end //compatibility
      if size(exprs,'*')==3 then exprs=[exprs;string(model.dstate(1))],end //compatibility
      while %t do
        [ok,flag,a,b,seed_c,exprs]=getvalue([
    	'Set Random generator block parameters';
    	'flag = 0 : Uniform distribution A is min and A+B max';
    	'flag = 1 : Normal distribution A is mean and B deviation';
    	' ';
    	'A and B must be vector with equal sizes';
    	'seed is the seed of random number generator (integer<2**31)'],..
    	['flag';'A';'B';'seed'],..
    	list('vec',1,'vec',-1,'vec','size(%2,''*'')','vec',1),exprs)
        if ~ok then break,end
        if flag<>0&flag<>1 then
          message('flag must be equal to 1 or 0')
        else
          nout=size(a,'*')
          graphics.exprs=exprs
          model.out=nout
          model.ipar=flag
          model.rpar=[a(:);b(:)]
          model.dstate=[seed_c;0*a(:)]
          x.graphics=graphics;x.model=model
          break
        end
      end
    case 'define' then
      a=0
      b=1
      dt=0
      out=1
      flag=0
      model=scicos_model()
      model.sim='rndblk'
      model.out=out
      model.evtin=1
      model.dstate=[int(rand()*(10^7-1));0*a(:)]
      model.rpar=[a(:);b(:)]
      model.ipar=flag
      model.blocktype='d'
      model.dep_ut=[%f %f]

      exprs=[string(flag);sci2exp(a(:));sci2exp(b(:));string(model.dstate(1))]
      gr_i=['txt=[''random'';''generator''];';
        'xstringb(orig(1),orig(2),txt,sz(1),sz(2),''fill'')']
      x=standard_define([3 2],model,exprs,gr_i)
    end
    endfunction