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#[inline(always)]
pub(crate) const fn adc(a: u64, b: u64, c: u64) -> (u64, u64) {
    let t = a as u128 + b as u128 + c as u128;
    (t as u64, (t >> 64) as u64)
}

#[inline(always)]
pub(crate) const fn sbb(a: u64, b: u64, brw: u64) -> (u64, u64) {
    let t = (a as u128).wrapping_sub((b as u128) + (brw >> 63) as u128);
    (t as u64, (t >> 64) as u64)
}

#[inline(always)]
pub(crate) const fn mac(a: u64, b: u64, c: u64, d: u64) -> (u64, u64) {
    let t = (a as u128) + ((b as u128) * (c as u128)) + (d as u128);
    (t as u64, (t >> 64) as u64)
}

pub type ProjectiveCoordinate<L> = (L, L, L);

pub type Bits = Vec<u8>;