#[non_exhaustive]
pub enum SqrtPrecomputation<F: Field> {
    TonelliShanks {
        two_adicity: u32,
        quadratic_nonresidue_to_trace: F,
        trace_of_modulus_minus_one_div_two: &'static [u64],
    },
    Case3Mod4 {
        modulus_plus_one_div_four: &'static [u64],
    },
}
Expand description

Precomputation that makes computing square roots faster A particular variant should only be instantiated if the modulus satisfies the corresponding condition.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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TonelliShanks

Fields

§two_adicity: u32
§quadratic_nonresidue_to_trace: F
§trace_of_modulus_minus_one_div_two: &'static [u64]
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Case3Mod4

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§modulus_plus_one_div_four: &'static [u64]

To be used when the modulus is 3 mod 4.

Implementations§

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impl<F: Field> SqrtPrecomputation<F>

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pub fn sqrt(&self, elem: &F) -> Option<F>

Auto Trait Implementations§

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impl<F> RefUnwindSafe for SqrtPrecomputation<F>where F: RefUnwindSafe,

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impl<F> Send for SqrtPrecomputation<F>

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impl<F> Sync for SqrtPrecomputation<F>

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impl<F> Unpin for SqrtPrecomputation<F>where F: Unpin,

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impl<F> UnwindSafe for SqrtPrecomputation<F>where F: UnwindSafe,

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for Twhere V: MultiLane<T>,

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fn vzip(self) -> V