fiat_25519_int1
x2 = ((fiat_25519_int1)(0x0 - x1) & UINT32_C(0xffffffff));
x2 = ((fiat_25519_int1)(0x0 - x1) & UINT64_C(0xffffffffffffffff));
fiat_25519_int1 x2;
x2 = (fiat_25519_int1)(x1 >> 26);
fiat_25519_int1 x2;
x2 = (fiat_25519_int1)(x1 >> 51);
fiat_25519_int1 x2;
x2 = (fiat_25519_int1)(x1 >> 25);