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require 'test/unit'
class TestMath < Test::Unit::TestCase
# JRUBY-1591
def test_tanh_returns_1_when_given_1_over_0
assert_equal(1.0, Math.tanh(1.0/0.0))
end
def test_frexp_inf
inf = 1.0 / 0
assert_nothing_raised{ Math.frexp(inf) }
assert_equal(inf, Math.frexp(inf).first)
assert_equal(0, Math.frexp(inf).last)
end
def test_frexp_nan
nan = 0.0 / 0
assert_nothing_raised{ Math.frexp(nan) }
assert(Math.frexp(nan).first.nan?)
assert_equal(0, Math.frexp(nan).last)
end
end
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