micropython/tests/basics/int_big_mod.py

# test % operation on big integers

delta = 100000000000000000000000000000012345

for i in range(11):
    for j in range(11):
        x = delta * (i - 5)
        y = delta * (j - 5)
        if y != 0:
            print(x % y)

# these check an edge case on 64-bit machines where two mpz limbs
# are used and the most significant one has the MSB set
x = 0x8000000000000000
print((x + 1) % x)
x = 0x86c60128feff5330
print((x + 1) % x)