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require 'test/unit'
class TestFixnum < Test::Unit::TestCase
def setup
@verbose = $VERBOSE
$VERBOSE = nil
end
def teardown
$VERBOSE = @verbose
end
def test_pow
[1, 2, 2**64, 2**63*3, 2**64*3].each do |y|
[1, 3].each do |x|
z1 = x**y
z2 = (-x)**y
if y % 2 == 1
assert_equal(z2, -z1)
else
assert_equal(z2, z1)
end
end
end
end
def test_succ
assert_equal(0x40000000, 0x3fffffff.succ, "[ruby-dev:31189]")
assert_equal(0x4000000000000000, 0x3fffffffffffffff.succ, "[ruby-dev:31190]")
end
def test_pred
assert_equal(-0x40000001, (-0x40000000).pred)
assert_equal(-0x4000000000000001, (-0x4000000000000000).pred)
end
def test_plus
assert_equal(0x40000000, 0x3fffffff+1)
assert_equal(0x4000000000000000, 0x3fffffffffffffff+1)
assert_equal(-0x40000001, (-0x40000000)+(-1))
assert_equal(-0x4000000000000001, (-0x4000000000000000)+(-1))
assert_equal(-0x80000000, (-0x40000000)+(-0x40000000))
end
def test_sub
assert_equal(0x40000000, 0x3fffffff-(-1))
assert_equal(0x4000000000000000, 0x3fffffffffffffff-(-1))
assert_equal(-0x40000001, (-0x40000000)-1)
assert_equal(-0x4000000000000001, (-0x4000000000000000)-1)
assert_equal(-0x80000000, (-0x40000000)-0x40000000)
end
def test_mult
assert_equal(0x40000000, 0x20000000*2)
assert_equal(0x4000000000000000, 0x2000000000000000*2)
assert_equal(-0x40000001, 33025*(-32513))
assert_equal(-0x4000000000000001, 1380655685*(-3340214413))
assert_equal(0x40000000, (-0x40000000)*(-1))
end
def test_div
assert_equal(0x40000000, 0xc0000000/3)
assert_equal(0x4000000000000000, 0xc000000000000000/3)
assert_equal(-0x40000001, 0xc0000003/(-3))
assert_equal(-0x4000000000000001, 0xc000000000000003/(-3))
assert_equal(0x40000000, (-0x40000000)/(-1), "[ruby-dev:31210]")
assert_equal(0x4000000000000000, (-0x4000000000000000)/(-1))
end
end
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