diff options
Diffstat (limited to 'test/ruby/test_math.rb')
| -rw-r--r-- | test/ruby/test_math.rb | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/test/ruby/test_math.rb b/test/ruby/test_math.rb index ab55df8e30..7091783176 100644 --- a/test/ruby/test_math.rb +++ b/test/ruby/test_math.rb @@ -255,6 +255,10 @@ class TestMath < Test::Unit::TestCase end assert_raise(Math::DomainError) { Math.gamma(-Float::INFINITY) } + x = Math.gamma(-0.0) + mesg = "Math.gamma(-0.0) should be -INF" + assert_infinity(x, mesg) + assert_predicate(x, :negative?, mesg) end def test_lgamma @@ -271,6 +275,11 @@ class TestMath < Test::Unit::TestCase assert_float_and_int([Math.log(6), 1], Math.lgamma(4)) assert_raise(Math::DomainError) { Math.lgamma(-Float::INFINITY) } + x, sign = Math.lgamma(-0.0) + mesg = "Math.lgamma(-0.0) should be [INF, -1]" + assert_infinity(x, mesg) + assert_predicate(x, :positive?, mesg) + assert_equal(-1, sign, mesg) end def test_fixnum_to_f |