Add Numeric#ceildiv and Integer#ceildiv

3 files changed, 32 insertions, 0 deletions

diff --git a/test/ruby/test_complex.rb b/test/ruby/test_complex.rb
index a3a7546575..5cf52e812e 100644
--- a/test/ruby/test_complex.rb
+++ b/test/ruby/test_complex.rb
@@ -915,6 +915,7 @@ class Complex_Test < Test::Unit::TestCase
     assert_not_respond_to(c, :%)
     assert_not_respond_to(c, :div)
     assert_not_respond_to(c, :divmod)
+    assert_not_respond_to(c, :ceildiv)
     assert_not_respond_to(c, :floor)
     assert_not_respond_to(c, :ceil)
     assert_not_respond_to(c, :modulo)
diff --git a/test/ruby/test_integer.rb b/test/ruby/test_integer.rb
index a2b181c642..c3e11498be 100644
--- a/test/ruby/test_integer.rb
+++ b/test/ruby/test_integer.rb
@@ -704,4 +704,21 @@ class TestInteger < Test::Unit::TestCase
     def o.to_int; Object.new; end
     assert_raise_with_message(TypeError, /can't convert Object to Integer/) {Integer.try_convert(o)}
   end
+
+  def test_ceildiv
+    assert_equal(0, 0.ceildiv(3))
+    assert_equal(1, 1.ceildiv(3))
+    assert_equal(1, 3.ceildiv(3))
+    assert_equal(2, 4.ceildiv(3))
+
+    assert_equal(-1, 4.ceildiv(-3))
+    assert_equal(-1, -4.ceildiv(3))
+    assert_equal(2, -4.ceildiv(-3))
+
+    assert_equal(3, 3.ceildiv(1.2))
+    assert_equal(3, 3.ceildiv(6/5r))
+
+    assert_equal(10, (10**100-11).ceildiv(10**99-1))
+    assert_equal(11, (10**100-9).ceildiv(10**99-1))
+  end
 end
diff --git a/test/ruby/test_numeric.rb b/test/ruby/test_numeric.rb
index 0593cb535d..068f9a56eb 100644
--- a/test/ruby/test_numeric.rb
+++ b/test/ruby/test_numeric.rb
@@ -482,4 +482,18 @@ class TestNumeric < Test::Unit::TestCase
     assert_equal(0, -2.pow(3, 1))
   end
 
+  def test_ceildiv
+    assert_equal(0, 0.0.ceildiv(3.0))
+    assert_equal(1, 1.0.ceildiv(3.0))
+    assert_equal(1, 3.0.ceildiv(3.0))
+    assert_equal(2, 4.0.ceildiv(3.0))
+
+    assert_equal(-1, 4.0.ceildiv(-3.0))
+    assert_equal(-1, -4.0.ceildiv(3.0))
+    assert_equal(2, -4.0.ceildiv(-3.0))
+
+    assert_equal(3, 3.0.ceildiv(1.2))
+    assert_equal(3, 3.0.ceildiv(6/5r))
+    assert_equal(3, (7r/2).ceildiv(6/5r))
+  end
 end