use serde::{Deserialize, Deserializer, Serialize, Serializer};
pub(crate) fn serialize_limbs<S: Serializer>(
limbs: &[u64; 4],
serializer: S,
) -> Result<S::Ok, S::Error> {
[limbs[3], limbs[2], limbs[1], limbs[0]].serialize(serializer)
}
pub(crate) fn deserialize_to_limbs<'de, D: Deserializer<'de>>(
deserializer: D,
) -> Result<[u64; 4], D::Error> {
let limbs = <[u64; 4]>::deserialize(deserializer)?;
Ok([limbs[3], limbs[2], limbs[1], limbs[0]])
}