def set(self, _float: float):
"""
float 값을 통해 float 를 받기 위한 함수
float 값을 Bit를 통해 float로 어떻게 표현하는 지 로직 확인을 위한 함수
deprecated
"""
if _float < 0:
self.sign = Bit(True)
_float = -_float
else:
self.sign = Bit()
bits = []
int_val = int(_float)
_float -= int_val
while int_val > 0:
bits.insert(0, Bit(bool(int_val % 2)))
int_val //= 2
del bits[0]
exp = len(bits)
exp = UnsignedInteger('127') + UnsignedInteger(str(exp))
while _float > 0 and len(bits) < self.fraction_len:
_float *= 2
bits.append(Bit(int(_float) == 1))
_float -= int(_float)
for _ in range(self.fraction_len-len(bits)):
bits.append(Bit())
bits[-1] = Bit(bool(_float))
self.exponents = exp.bits[-self.exponent_len:]
self.fractions = bits[:self.fraction_len]
def test_unsigned_integer_min_value1():
assert UnsignedInteger.min_value() == UnsignedInteger('0')
def test_unsigned_integer_min_value2():
bits = UnsignedInteger.min_value().bits
for bit in bits:
assert bit == Bit(False)
def test_unsigned_integer_max_value1():
assert UnsignedInteger.max_value() == UnsignedInteger(str(2**UnsignedInteger.bit_len-1))
def test_unsigned_integer_max_value2():
bits = UnsignedInteger.max_value().bits
for bit in bits:
assert bit == Bit(True)
def test_unsigned_integer_division3():
integer1 = UnsignedInteger.max_value()
integer2 = UnsignedInteger('5')
assert integer2 / integer1 == UnsignedInteger('0')
def test_unsigned_integer_division5():
integer1 = UnsignedInteger('0')
integer2 = UnsignedInteger('0')
with pytest.raises(ZeroDivisionError):
integer1 / integer2
def test_unsigned_integer_init1():
unsigned_integer = UnsignedInteger('3')
assert str(unsigned_integer) == '3'
def test_unsigned_integer_division2():
integer1 = UnsignedInteger.max_value()
integer2 = UnsignedInteger('5')
assert integer1 / integer2 == UnsignedInteger('858993459')
def test_unsigned_integer_division1():
unsigned_integer1 = UnsignedInteger('20')
unsigned_integer2 = UnsignedInteger('4')
assert unsigned_integer1 / unsigned_integer2 == UnsignedInteger('5')
def test_unsigned_integer_multiplication():
unsigned_integer1 = UnsignedInteger('107')
unsigned_integer2 = UnsignedInteger('97')
assert unsigned_integer1 * unsigned_integer2 == UnsignedInteger('10379')
def test_unsigned_integer_plus4():
unsigned_integer1 = UnsignedInteger('25')
unsigned_integer2 = UnsignedInteger('-10')
assert unsigned_integer1 + unsigned_integer2 == UnsignedInteger('15')
def test_unsigned_integer_plus1():
unsigned_integer1 = UnsignedInteger('3')
unsigned_integer2 = UnsignedInteger('5')
assert unsigned_integer1 + unsigned_integer2 == UnsignedInteger('8')
def test_unsigned_integer_init2():
unsigned_integer = UnsignedInteger('-1')
assert unsigned_integer.val() == 2**UnsignedInteger.bit_len-1