rand_random      1281 random.c       static VALUE rand_random(int argc, VALUE *argv, VALUE obj, rb_random_t *rnd);
rand_random      1315 random.c           VALUE v = rand_random(argc, argv, obj, get_rnd(obj));
rand_random      1353 random.c           VALUE v = rand_random(argc, argv, obj, rnd);
rand_random      1354 random.c           if (NIL_P(v)) v = rand_random(0, 0, obj, rnd);
rand_random      1456 random.c           VALUE v = rand_random(argc, argv, Qnil, rand_start(&default_rand));