CircuitPython

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# test + + 

print(0 ^ (1 << 80))
print((1 << 80) ^ (1 << 80))
print((1 << 80) ^ 0)

a = 0xfffffffffffffffffffffffffffff
print(a ^ (1 << 100))
print(a ^ (1 << 200))
print(a ^ a == 0)
print(bool(a ^ a))

# test - + 

print((-1 << 80) ^ (1 << 80))
print((-1 << 80) ^ 0)

print((-a) ^ (1 << 100))
print((-a) ^ (1 << 200))
print((-a) ^ a == 0)
print(bool((-a) ^ a))
i = -1
print(i ^ 0xffffffffffffffff) # carry overflows to higher digit

# test + - 

print(0 ^ (-1 << 80))
print((1 << 80) ^ (-1 << 80))

print(a ^ (-1 << 100))
print(a ^ (-1 << 200))
print(a ^ (-a) == 0)
print(bool(a ^ (-a)))

# test - - 

print((-1 << 80) ^ (-1 << 80))

print((-a) ^ (-1 << 100))
print((-a) ^ (-1 << 200))
print((-a) ^ (-a) == 0)
print(bool((-a) ^ (-a)))