4 files changed, 23 insertions, 5 deletions
diff --git a/mrbgems/mruby-numeric-ext/mrbgem.rake b/mrbgems/mruby-numeric-ext/mrbgem.rake
index 010804058..3d8be7cd5 100644
--- a/mrbgems/mruby-numeric-ext/mrbgem.rake
+++ b/mrbgems/mruby-numeric-ext/mrbgem.rake
@@ -1,4 +1,5 @@
 MRuby::Gem::Specification.new('mruby-numeric-ext') do |spec|
   spec.license = 'MIT'
   spec.author  = 'mruby developers'
+  spec.summary = 'extensional Numeric class'
 end
diff --git a/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb b/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb
new file mode 100644
index 000000000..dfc6ba87c
--- /dev/null
+++ b/mrbgems/mruby-numeric-ext/mrblib/numeric_ext.rb
@@ -0,0 +1,5 @@
+module Integral
+  def div(other)
+    self.divmod(other)[0]
+  end
+end
diff --git a/mrbgems/mruby-numeric-ext/src/numeric_ext.c b/mrbgems/mruby-numeric-ext/src/numeric_ext.c
index bb6955b45..22c1668fa 100644
--- a/mrbgems/mruby-numeric-ext/src/numeric_ext.c
+++ b/mrbgems/mruby-numeric-ext/src/numeric_ext.c
@@ -1,6 +1,5 @@
 #include <limits.h>
 #include "mruby.h"
-#include "mruby/numeric.h"
 
 static mrb_value
 mrb_int_chr(mrb_state *mrb, mrb_value x)
diff --git a/mrbgems/mruby-numeric-ext/test/numeric.rb b/mrbgems/mruby-numeric-ext/test/numeric.rb
index 6c1cf0fce..4d9e83113 100644
--- a/mrbgems/mruby-numeric-ext/test/numeric.rb
+++ b/mrbgems/mruby-numeric-ext/test/numeric.rb
@@ -2,9 +2,22 @@
 # Numeric(Ext) Test
 
 assert('Integer#chr') do
-  assert_equal(65.chr, "A")
-  assert_equal(0x42.chr, "B")
+  assert_equal("A", 65.chr)
+  assert_equal("B", 0x42.chr)
 
-  # multibyte encoding (not support yet)
-  assert_raise(RangeError) { 12345.chr }
+  if "こんにちわ世界".size == 7 then
+      # UTF-8 gem is configured
+      assert_raise(RangeError) { 0x110000.chr }
+  else
+      # multibyte encoding (not support yet)
+      assert_raise(RangeError) { 256.chr }
+  end
+end
+
+assert('Integer#div') do
+  assert_equal 52, 365.div(7)
+end
+
+assert('Float#div') do
+  assert_float 52, 365.2425.div(7)
 end