Add `Numeric#{finite?,infinite?}`; CRuby2.4

src/numeric.c

@@ -1254,6 +1254,20 @@ num_cmp(mrb_state *mrb, mrb_value self)
   }
 }
 
+static mrb_value
+num_finite_p(mrb_state *mrb, mrb_value self)
+{
+  mrb_get_args(mrb, "");
+  return mrb_true_value();
+}
+
+static mrb_value
+num_infinite_p(mrb_state *mrb, mrb_value self)
+{
+  mrb_get_args(mrb, "");
+  return mrb_false_value();
+}
+
 /* 15.2.9.3.1  */
 /*
  * call-seq:
@@ -1284,6 +1298,8 @@ mrb_init_numeric(mrb_state *mrb)
   mrb_define_method(mrb, numeric, "/",        num_div,         MRB_ARGS_REQ(1)); /* 15.2.8.3.4  */
   mrb_define_method(mrb, numeric, "quo",      num_div,         MRB_ARGS_REQ(1)); /* 15.2.7.4.5 (x) */
   mrb_define_method(mrb, numeric, "<=>",      num_cmp,         MRB_ARGS_REQ(1)); /* 15.2.9.3.6  */
+  mrb_define_method(mrb, numeric, "finite?",  num_finite_p,    MRB_ARGS_NONE());
+  mrb_define_method(mrb, numeric, "infinite?",num_infinite_p,  MRB_ARGS_NONE());
 
   /* Integer Class */
   integer = mrb_define_class(mrb, "Integer",  numeric);                          /* 15.2.8 */