* random.c (Init_Random): add Random::DEFAULT.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28846 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Aug  3 21:16:03 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* random.c (Init_Random): add Random::DEFAULT.
+
 Tue Aug  3 21:01:10 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* hash.c (rb_check_hash_type): added.

random.c

@@ -329,7 +329,12 @@ random_mark(void *ptr)
     rb_gc_mark(((rb_random_t *)ptr)->seed);
 }
 
-#define random_free RUBY_TYPED_DEFAULT_FREE
+static void
+random_free(void *ptr)
+{
+    if (ptr != &default_rand)
+	xfree(ptr);
+}
 
 static size_t
 random_memsize(const void *ptr)
@@ -1232,6 +1237,8 @@ Init_Random(void)
     rb_define_private_method(rb_cRandom, "state", random_state, 0);
     rb_define_private_method(rb_cRandom, "left", random_left, 0);
     rb_define_method(rb_cRandom, "==", random_equal, 1);
+    rb_define_const(rb_cRandom, "DEFAULT",
+		    TypedData_Wrap_Struct(rb_cRandom, &random_data_type, &default_rand));
 
     rb_define_singleton_method(rb_cRandom, "srand", rb_f_srand, -1);
     rb_define_singleton_method(rb_cRandom, "rand", rb_f_rand, -1);

test/ruby/test_rand.rb

@@ -415,4 +415,16 @@ END
       assert_equal(r1, r2)
     }
   end
+
+  def test_default
+    r1 = Random::DEFAULT.dup
+    r2 = Random::DEFAULT.dup
+    3.times do
+      x0 = rand
+      x1 = r1.rand
+      x2 = r2.rand
+      assert_equal(x0, x1)
+      assert_equal(x0, x2)
+    end
+  end
 end