nobu	2015-03-10 20:01:55 +0900 (Tue, 10 Mar 2015)

  New Revision: 49916

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=49916

  Log:
    test_math.rb: to_f tests
    
    * test/ruby/test_math.rb (test_{fixnum,bignum,rational}_to_f):
      refine to_f tests.

  Modified files:
    trunk/test/ruby/test_math.rb
Index: test/ruby/test_math.rb
===================================================================
--- test/ruby/test_math.rb	(revision 49915)
+++ test/ruby/test_math.rb	(revision 49916)
@@ -49,11 +49,6 @@ class TestMath < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_math.rb#L49
     check(-1.0, Math.cos(4 * Math::PI / 4))
     check(0.0,  Math.cos(6 * Math::PI / 4))
     check(0.5403023058681398,  Math.cos(1))
-    check(-0.7112665029764864, Math.cos(1 << 62))
-    check(0.9289154176164999,  Math.cos((2 ** 62)/(3 ** 40).to_r))
-    check(0.9820680774815206,  Math.cos((2 ** 61)/(3 ** 40).to_r))
-    check(0.4194382061248139,  Math.cos((2 ** 62)/(3 ** 39).to_r))
-    check(0.8424482791616391,  Math.cos((2 ** 61)/(3 ** 39).to_r))
   end
 
   def test_sin
@@ -272,6 +267,10 @@ class TestMath < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_math.rb#L267
     assert_raise(Math::DomainError) { Math.lgamma(-Float::INFINITY) }
   end
 
+  def test_fixnum_to_f
+    check(12.0, Math.sqrt(144))
+  end
+
   def test_override_fixnum_to_f
     Fixnum.class_eval do
       alias _to_f to_f
@@ -287,6 +286,10 @@ class TestMath < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_math.rb#L286
     Fixnum.class_eval { alias to_f _to_f }
   end
 
+  def test_bignum_to_f
+    check((1 << 65).to_f, Math.sqrt(1 << 130))
+  end
+
   def test_override_bignum_to_f
     Bignum.class_eval do
       alias _to_f to_f
@@ -301,6 +304,10 @@ class TestMath < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_math.rb#L304
     Bignum.class_eval { alias to_f _to_f }
   end
 
+  def test_rational_to_f
+    check((2 ** 31).fdiv(3 ** 20), Math.sqrt((2 ** 62)/(3 ** 40).to_r))
+  end
+
   def test_override_rational_to_f
     Rational.class_eval do
       alias _to_f to_f

--
ML: ruby-changes@q...
Info: http://www.atdot.net/~ko1/quickml/