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ruby-changes:30126

From: nobu <ko1@a...>
Date: Fri, 26 Jul 2013 11:42:37 +0900 (JST)
Subject: [ruby-changes:30126] nobu:r42178 (trunk): rational.c: ensure to be Rational

nobu	2013-07-26 11:42:26 +0900 (Fri, 26 Jul 2013)

  New Revision: 42178

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=42178

  Log:
    rational.c: ensure to be Rational
    
    * rational.c (f_round_common): Rational is expected to be returned by
      Rational#*, but mathn.rb breaks that assumption.  [ruby-core:56177]
      [Bug #8687]

  Modified files:
    trunk/ChangeLog
    trunk/rational.c
    trunk/test/test_mathn.rb

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 42177)
+++ ChangeLog	(revision 42178)
@@ -1,3 +1,9 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Fri Jul 26 11:42:07 2013  Nobuyoshi Nakada  <nobu@r...>
+
+	* rational.c (f_round_common): Rational is expected to be returned by
+	  Rational#*, but mathn.rb breaks that assumption.  [ruby-core:56177]
+	  [Bug #8687]
+
 Fri Jul 26 01:37:45 2013  NARUSE, Yui  <naruse@r...>
 
 	* include/ruby/ruby.h: check defined(USE_RGENGC_LOGGING_WB_UNPROTECT)
Index: test/test_mathn.rb
===================================================================
--- test/test_mathn.rb	(revision 42177)
+++ test/test_mathn.rb	(revision 42178)
@@ -5,7 +5,7 @@ require_relative 'ruby/envutil' https://github.com/ruby/ruby/blob/trunk/test/test_mathn.rb#L5
 class TestMathn < Test::Unit::TestCase
   def test_power
     assert_in_out_err ['-r', 'mathn', '-e', 'a=1**2;!a'], "", [], [], '[ruby-core:25740]'
-    assert_in_out_err ['-r', 'mathn', '-e', 'a=(1<<126)**2;!a'], "", [], [], '[ruby-core:25740]'
+    assert_in_out_err ['-r', 'mathn', '-e', 'a=(1 << 126)**2;!a'], "", [], [], '[ruby-core:25740]'
     assert_in_out_err ['-r', 'mathn/complex', '-e', 'a=Complex(0,1)**4;!a'], "", [], [], '[ruby-core:44170]'
     assert_in_out_err ['-r', 'mathn/complex', '-e', 'a=Complex(0,1)**5;!a'], "", [], [], '[ruby-core:44170]'
   end
@@ -15,4 +15,104 @@ class TestMathn < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/test_mathn.rb#L15
       1.quo(2); puts :OK
     EOS
   end
+
+  def test_floor
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 2, ( 13/5).floor)
+      assert_equal( 2, (  5/2).floor)
+      assert_equal( 2, ( 12/5).floor)
+      assert_equal(-3, (-12/5).floor)
+      assert_equal(-3, ( -5/2).floor)
+      assert_equal(-3, (-13/5).floor)
+
+      assert_equal( 2, ( 13/5).floor(0))
+      assert_equal( 2, (  5/2).floor(0))
+      assert_equal( 2, ( 12/5).floor(0))
+      assert_equal(-3, (-12/5).floor(0))
+      assert_equal(-3, ( -5/2).floor(0))
+      assert_equal(-3, (-13/5).floor(0))
+
+      assert_equal(( 13/5), ( 13/5).floor(2))
+      assert_equal((  5/2), (  5/2).floor(2))
+      assert_equal(( 12/5), ( 12/5).floor(2))
+      assert_equal((-12/5), (-12/5).floor(2))
+      assert_equal(( -5/2), ( -5/2).floor(2))
+      assert_equal((-13/5), (-13/5).floor(2))
+    EOS
+  end
+
+  def test_ceil
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 3, ( 13/5).ceil)
+      assert_equal( 3, (  5/2).ceil)
+      assert_equal( 3, ( 12/5).ceil)
+      assert_equal(-2, (-12/5).ceil)
+      assert_equal(-2, ( -5/2).ceil)
+      assert_equal(-2, (-13/5).ceil)
+
+      assert_equal( 3, ( 13/5).ceil(0))
+      assert_equal( 3, (  5/2).ceil(0))
+      assert_equal( 3, ( 12/5).ceil(0))
+      assert_equal(-2, (-12/5).ceil(0))
+      assert_equal(-2, ( -5/2).ceil(0))
+      assert_equal(-2, (-13/5).ceil(0))
+
+      assert_equal(( 13/5), ( 13/5).ceil(2))
+      assert_equal((  5/2), (  5/2).ceil(2))
+      assert_equal(( 12/5), ( 12/5).ceil(2))
+      assert_equal((-12/5), (-12/5).ceil(2))
+      assert_equal(( -5/2), ( -5/2).ceil(2))
+      assert_equal((-13/5), (-13/5).ceil(2))
+    EOS
+  end
+
+  def test_truncate
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 2, ( 13/5).truncate)
+      assert_equal( 2, (  5/2).truncate)
+      assert_equal( 2, ( 12/5).truncate)
+      assert_equal(-2, (-12/5).truncate)
+      assert_equal(-2, ( -5/2).truncate)
+      assert_equal(-2, (-13/5).truncate)
+
+      assert_equal( 2, ( 13/5).truncate(0))
+      assert_equal( 2, (  5/2).truncate(0))
+      assert_equal( 2, ( 12/5).truncate(0))
+      assert_equal(-2, (-12/5).truncate(0))
+      assert_equal(-2, ( -5/2).truncate(0))
+      assert_equal(-2, (-13/5).truncate(0))
+
+      assert_equal(( 13/5), ( 13/5).truncate(2))
+      assert_equal((  5/2), (  5/2).truncate(2))
+      assert_equal(( 12/5), ( 12/5).truncate(2))
+      assert_equal((-12/5), (-12/5).truncate(2))
+      assert_equal(( -5/2), ( -5/2).truncate(2))
+      assert_equal((-13/5), (-13/5).truncate(2))
+    EOS
+  end
+
+  def test_round
+    assert_separately(%w[-rmathn], <<-EOS)
+      assert_equal( 3, ( 13/5).round)
+      assert_equal( 3, (  5/2).round)
+      assert_equal( 2, ( 12/5).round)
+      assert_equal(-2, (-12/5).round)
+      assert_equal(-3, ( -5/2).round)
+      assert_equal(-3, (-13/5).round)
+
+      assert_equal( 3, ( 13/5).round(0))
+      assert_equal( 3, (  5/2).round(0))
+      assert_equal( 2, ( 12/5).round(0))
+      assert_equal(-2, (-12/5).round(0))
+      assert_equal(-3, ( -5/2).round(0))
+      assert_equal(-3, (-13/5).round(0))
+
+      assert_equal(( 13/5), ( 13/5).round(2))
+      assert_equal((  5/2), (  5/2).round(2))
+      assert_equal(( 12/5), ( 12/5).round(2))
+      assert_equal((-12/5), (-12/5).round(2))
+      assert_equal(( -5/2), ( -5/2).round(2))
+      assert_equal((-13/5), (-13/5).round(2))
+    EOS
+  end
 end
Index: rational.c
===================================================================
--- rational.c	(revision 42177)
+++ rational.c	(revision 42178)
@@ -1285,6 +1285,10 @@ f_round_common(int argc, VALUE *argv, VA https://github.com/ruby/ruby/blob/trunk/rational.c#L1285
 	return self;
     }
 
+    if (!k_rational_p(s)) {
+	s = f_rational_new_bang1(CLASS_OF(self), s);
+    }
+
     s = (*func)(s);
 
     s = f_div(f_rational_new_bang1(CLASS_OF(self), s), b);

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