Randomization

SystemVerilog
5

In reply to dave_59:

Okay…

I just modified the same code and I am inserting a seed manually.

module temp; 
  class rand_class;
    rand int unsigned data;   
    function new(int seed);
      srandom(seed);
    endfunction
  endclass  
  
  rand_class obj;   
    initial
    begin      
      obj = new(10);
      $display("SEED = %d",obj.get_randstate());
      repeat(5) begin
        obj.randomize();
        $display("Data = %d, seed = %d",obj.data,obj.get_randstate());  end    
    end  
endmodule

So, here on which RNG will the seed 10 be loaded? If it is for object thread, then through first $display for obj.get_randstate() I should be getting 10.

Here is the output,

SEED =  4627009825161508818790549032975409576912747608007613670663354967688005127426567537619378540336574321059771681060756351887347663700834624509726131308091994
Data = 1259199836, seed =  2532006271069517679567699893160377841590441643497274272351457228610612951981757327074417830179063467247960281449516660673757496792152083733712046514526810
Data = 1918125812, seed =  4626976265854281180514947197437822078477535798474982797456824333358331421334425210844417182152310342353194914306311223319518503703649396910909870961220184
Data = 2263373791, seed =  2576402305486693448314360481394217134024106353880668131339340534213604682159408462868979423471588136234311296067687617247286999169849357467176591408257114
Data = 1160894215, seed =  4627009824649339133011204972591200958016150187620687913580408860257674102029464678299947477957044723251536943865625013119475372925999534663865015276690008
Data = 2156368458, seed =  4618826223773684211888993272211760420365008116347779968445576592813163782487979542097848440530407180683387174999129698488042551378273532800632930399050330

I am unable to figure out where my seed 10 is initiating…