def test_round_trip(self):
test_data = [struct.unpack('<f', os.urandom(4))[0]
for _ in range(1000)]
for value in test_data:
round_tripped = hex_to_float(float_to_hex(value))
if math.isnan(value):
assert math.isnan(round_tripped)
else:
assert round_tripped == value
def test_round_trip(self):
test_data = [
_pad_to(hex(struct.unpack('<I', os.urandom(4))[0]), 8)
for _ in range(1000)]
for value in test_data:
fromhex = hex_to_float(value)
if math.isnan(fromhex):
continue
round_tripped = float_to_hex(fromhex)
assert round_tripped == value
def test_negative_inf(self):
result = hex_to_float('0xff800000')
assert math.isinf(result)
assert result < 0
def test_inf(self):
result = hex_to_float('0x7f800000')
assert math.isinf(result)
assert result > 0
def test_nan(self):
result = hex_to_float('0x7f800001')
assert math.isnan(result)
def test_negative_zero(self):
expected = -0.0
result = hex_to_float('0x80000000')
assert result == expected
def test_zero(self):
expected = 0.0
result = hex_to_float('0x00000000')
assert result == expected
def test_nan(self):
round_tripped = hex_to_float(float_to_hex(float('nan')))
assert math.isnan(round_tripped)