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* bignum.c (rb_big_fdiv): checks whether the given second argument

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can be converted to float properly.

	* numeric.c (fix_fdiv): calls rb_big_fdiv when the given second
	  argument is a bignum.

	* rational.c (nurat_fdiv): should calculate Float(x/y), not
	  Float(x)/Float(y).



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23726 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
tadf 2009-06-17 12:55:16 +00:00
parent bbd2b5e9bd
commit b6849b2502
5 changed files with 91 additions and 47 deletions
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18
test/ruby/test_bignum.rb
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@ -4,6 +4,9 @@ class TestBignum < Test::Unit::TestCase
def setup
@verbose = $VERBOSE
$VERBOSE = nil
@fmax = Float::MAX.to_i
@fmax2 = @fmax * 2
@big = (1 << 63) - 1
end
def teardown
@ -395,4 +398,19 @@ class TestBignum < Test::Unit::TestCase
e = assert_raise(RangeError) {(1 << big).to_s}
assert_match(/too big to convert/, e.message)
end
def test_fix_fdiv
assert_not_equal(0, 1.fdiv(@fmax2))
assert_in_delta(0.5, 1.fdiv(@fmax2) * @fmax, 0.01)
end
def test_big_fdiv
assert_equal(1, @big.fdiv(@big))
assert_not_equal(0, @big.fdiv(@fmax2))
assert_not_equal(0, @fmax2.fdiv(@big))
assert_not_equal(0, @fmax2.fdiv(@fmax2))
assert_in_delta(0.5, @fmax.fdiv(@fmax2), 0.01)
assert_in_delta(1.0, @fmax2.fdiv(@fmax2), 0.01)
end
end