Struct sp1_core::utils::ec::uint256::U256Field

pub struct U256Field;

Although U256 is technically not a field, we utilize FieldParameters here for compatibility. This approach is specifically for the FieldOps multiplication operation, which employs these parameters solely as a modulus, rather than enforcing the requirement of being a proper field.

Trait Implementations

impl Clone for U256Field

fn clone(&self) -> U256Field

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for U256Field

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for U256Field

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FieldParameters for U256Field

const MODULUS: &'static [u8] = _

The modulus of the field. It is represented as a little-endian array of 33 bytes.

const WITNESS_OFFSET: usize = 16_384usize

A rough witness-offset estimate given the size of the limbs and the size of the field.

fn modulus() -> BigUint

The modulus of Uint235 is 2^256.

const NB_BITS_PER_LIMB: usize = 8usize

const NB_LIMBS: usize = <Self::Limbs>::USIZE

const NB_WITNESS_LIMBS: usize = <Self::Witness>::USIZE

fn nb_bits() -> usize

fn modulus_field_iter<F: Field>() -> impl Iterator<Item = F>

fn to_limbs(x: &BigUint) -> Vec<u8>

Convert a BigUint to a Vec of u8 limbs (with len NB_LIMBS).

fn to_limbs_field_vec<E: From<F>, F: Field>(x: &BigUint) -> Vec<E>

Convert a BigUint to a Vec of F limbs (with len NB_LIMBS).

fn to_limbs_field<E: From<F>, F: Field>(x: &BigUint) -> Limbs<E, Self::Limbs>

Convert a BigUint to Limbs<F, Self::Limbs>.

impl NumLimbs for U256Field

type Limbs = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>

type Witness = UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B1>, B1>, B1>, B1>, B1>

impl PartialEq for U256Field

fn eq(&self, other: &U256Field) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for U256Field

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for U256Field

impl StructuralPartialEq for U256Field