Esempi in C++ (Cpp) per mt_rand_real

Esempio n. 1

File: ga.c Progetto: JWCook/MPI_Distributed_Genetic_Algorithm

/* ------------------------------------------------------------------------- */
int selection(deme *subpop) {
	int i, my_rank;
	double current_sum = 0.0;
	MPI_Comm_rank(MPI_COMM_WORLD, &my_rank);
	
	long double rand = mt_rand_real(subpop->fit_tot, my_rank);
	
	for (i = 0; i < subpop->pop_size && current_sum <= rand; i++)
		current_sum += subpop->old_pop[i]->fitness;
	
	return i-1;
}

Esempio n. 2

File: random.c Progetto: Fleurer/mruby

static mrb_value mrb_random_mt_rand(mrb_state *mrb, mt_state *t, mrb_value max)
{ 
  mrb_value value;

  if (mrb_fixnum(max) == 0) {
    value = mrb_float_value(mrb, mt_rand_real(t));
  } else {
    value = mrb_fixnum_value(mt_rand(t) % mrb_fixnum(max));
  }

  return value;
}