import mir.bignum.fixed: UInt;
auto fp = cast(Fp!64) Fp!128(UInt!128.fromHexString("afbbfae3cd0aff2784a1de7022b0029d"));
assert(fp.exponent == 64);
assert(fp.coefficient == UInt!64.fromHexString("afbbfae3cd0aff28"));

assert(Fp!128(-double.infinity) * Fp!128(1) == Fp!128(-double.infinity));