Struct poseidon_rs::Fr

pub struct Fr(_);

Trait Implementations

impl Clone for Fr

fn clone(&self) -> Fr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Fr

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

Formats the value using the given formatter.

impl Default for Fr

fn default() -> Self

Returns the “default value” for a type.

impl Display for Fr

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

Formats the value using the given formatter.

impl Field for Fr

fn zero() -> Self

Returns the zero element of the field, the additive identity.

fn one() -> Self

Returns the one element of the field, the multiplicative identity.

fn is_zero(&self) -> bool

Returns true iff this element is zero.

fn add_assign(&mut self, other: &Fr)

Adds another element to this element.

fn double(&mut self)

Doubles this element.

fn sub_assign(&mut self, other: &Fr)

Subtracts another element from this element.

fn negate(&mut self)

Negates this element.

fn inverse(&self) -> Option<Self>

Computes the multiplicative inverse of this element, if nonzero.

fn frobenius_map(&mut self, _: usize)

Exponentiates this element by a power of the base prime modulus via the Frobenius automorphism.

fn mul_assign(&mut self, other: &Fr)

Multiplies another element by this element.

fn square(&mut self)

Squares this element.

fn pow<S>(&self, exp: S) -> Selfwhere S: AsRef<[u64]>,

Exponentiates this element by a number represented with u64 limbs, least significant digit first.

impl From<Fr> for FrRepr

fn from(e: Fr) -> FrRepr

Converts to this type from the input type.

impl Hash for Fr

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Fr

Elements are ordered lexicographically.

fn cmp(&self, other: &Fr) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<Fr> for Fr

fn eq(&self, other: &Fr) -> 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 PartialOrd<Fr> for Fr

fn partial_cmp(&self, other: &Fr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PrimeField for Fr

type Repr = FrRepr

The prime field can be converted back and forth into this biginteger representation.

fn from_repr(r: FrRepr) -> Result<Fr, PrimeFieldDecodingError>

Convert this prime field element into a biginteger representation.

fn from_raw_repr(r: FrRepr) -> Result<Self, PrimeFieldDecodingError>

Creates an element from raw representation in Montgommery form.

fn into_repr(&self) -> FrRepr

Convert a biginteger representation into a prime field element, if the number is an element of the field.

fn into_raw_repr(&self) -> FrRepr

Expose Montgommery represendation.

fn char() -> FrRepr

Returns the field characteristic; the modulus.

const NUM_BITS: u32 = 254u32

How many bits are needed to represent an element of this field.

const CAPACITY: u32 = 253u32

How many bits of information can be reliably stored in the field element.

fn multiplicative_generator() -> Self

Returns the multiplicative generator of char() - 1 order. This element must also be quadratic nonresidue.

const S: u32 = 28u32

2^s * t = char() - 1 with t odd.

fn root_of_unity() -> Self

Returns the 2^s root of unity computed by exponentiating the multiplicative_generator() by t.

fn from_str(s: &str) -> Option<Self>

Interpret a string of numbers as a (congruent) prime field element. Does not accept unnecessary leading zeroes or a blank string.

impl Rand for Fr

fn rand<R: Rng>(rng: &mut R) -> Self

Computes a uniformly random element using rejection sampling.

impl SqrtField for Fr

fn legendre(&self) -> LegendreSymbol

Returns the Legendre symbol of the field element.

fn sqrt(&self) -> Option<Self>

Returns the square root of the field element, if it is quadratic residue.

impl Copy for Fr

impl Eq for Fr