def test_equality_normalizable_subnormal(self):
p = IBMFloat(bytes((0x10, 0x04, 0x00, 0x00)))
assert p.is_subnormal()
q = IBMFloat(bytes((0x10, 0x05, 0x00, 0x00)))
assert q.is_subnormal()
assert p != q
def test_small_subnormals_are_not_equal(self):
p = IBMFloat(bytes((0x00, 0x00, 0x00, 0x01)))
q = IBMFloat(bytes((0x00, 0x00, 0x00, 0x02)))
assert p != q
def test_subnormals_rhs_are_not_equal_to_one(self):
p = IBMFloat.from_float(1.0)
q = IBMFloat(bytes((0x00, 0x00, 0x00, 0x01)))
assert p != q
def test_one_equal(self):
buffer = b'\x41\x10\x00\x00'
p = IBMFloat(buffer)
q = IBMFloat(buffer)
assert p == q
def test_smallest_subnormal_is_equal(self):
buffer = bytes((0x00, 0x00, 0x00, 0x01))
p = IBMFloat(buffer)
q = IBMFloat(buffer)
assert p == q
def test_negative_half_equal(self):
buffer = bytes((0b01000000, 0x80, 0x00, 0x00))
p = IBMFloat(buffer)
q = IBMFloat(buffer)
assert p == q
def test_subnormal_equal(self, a):
buffer = bytes([a, 0, 0, 0])
p = IBMFloat(buffer)
q = IBMFloat(buffer)
assert p == q
def test_zero_equal(self):
buffer = bytes([0, 0, 0, 0])
p = IBMFloat(buffer)
q = IBMFloat(buffer)
assert p == q
def test_is_subnormal(self, a):
buffer = bytes([a, 0, 0, 0])
ibm = IBMFloat(buffer)
assert ibm.is_subnormal()
def test_normalize_zero(self):
zero = IBMFloat(bytes((0x32, 0x00, 0x00, 0x00)))
assert zero.is_subnormal()
nzero = zero.normalize()
assert bytes(nzero) == bytes((0x00, 0x00, 0x00, 0x00))
