pub struct FpElem<F: PrimeField> { /* private fields */ }Expand description
A field element represented by: p = p.0 + 2^m * p.1. The struct is useful in modular multiplication as the multiplication of two components (e.g. p.0 * q.0) won’t overflow the prime field. Warning: for performance reasons, when this struct is used, we will assume 2^m - two_power_m without checking.
Implementations§
Source§impl<F> FpElem<F>where
F: PrimeField,
impl<F> FpElem<F>where
F: PrimeField,
Sourcepub fn new(
p: &F,
m: usize,
two_power_m: Option<F>,
) -> Result<Self, CircuitError>
pub fn new( p: &F, m: usize, two_power_m: Option<F>, ) -> Result<Self, CircuitError>
Create a FpElem struct from field element p and split parameter m,
where m <= F::MODULUS_BIT_SIZE / 2
Sourcepub fn field_elem(&self) -> F
pub fn field_elem(&self) -> F
Convert into a single field element.
Sourcepub fn components(&self) -> (F, F)
pub fn components(&self) -> (F, F)
Expose the field element components
Sourcepub fn two_power_m(&self) -> F
pub fn two_power_m(&self) -> F
Expose 2^m parameter
Trait Implementations§
impl<F: Copy + PrimeField> Copy for FpElem<F>
impl<F: Eq + PrimeField> Eq for FpElem<F>
impl<F: PrimeField> StructuralPartialEq for FpElem<F>
Auto Trait Implementations§
impl<F> Freeze for FpElem<F>where
F: Freeze,
impl<F> RefUnwindSafe for FpElem<F>where
F: RefUnwindSafe,
impl<F> Send for FpElem<F>
impl<F> Sync for FpElem<F>
impl<F> Unpin for FpElem<F>where
F: Unpin,
impl<F> UnwindSafe for FpElem<F>where
F: UnwindSafe,
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Convert
Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can
then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait.§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert
&mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s.§impl<T> DowncastSync for T
impl<T> DowncastSync for T
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more