anchor.diff:  
   seed_get() ->
       case get(?SEED_DICT) of
  -        undefined -> seed0();
  +        undefined -> make_seed(exs64);
           Old -> Old  % no type checking here
       end.
   
  
positive.code: %% NOTE: this module will replace OTP random module
  -module(random).
  
  -export([seed0/0,
  	 %% New functions
  	 seed0/1, make_seed/1, make_seed/2, export_seed/0, export_seed/1,
           uniform/0, uniform/1, uniform_s/1, uniform_s/2]).
  
  -export([seed/0, seed/1, seed/3]). %% Deprecate ?
  
  -define(DEFAULT_ALG_HANDLER, as183).
  -define(SEED_DICT, random_seed).
  
negative.code: seed0() ->
      seed0(?DEFAULT_ALG_HANDLER).
  
  seed0(Alg) ->
      make_seed(Alg, {3172, 9814, 20125}).
  
  