ProperCrtUint

halo2_ecc::bigint

Struct ProperCrtUint

pub struct ProperCrtUint<F: ScalarField>(/* private fields */);

Expand description

Safe wrapper for representing a BigUint as a CRTInteger whose underlying BigUint value is in [0, 2^t) where t = truncation.limbs.len() * limb_bits. This struct guarantees that

each truncation.limbs[i] is ranged checked to be in [0, 2^limb_bits),
native is the evaluation of sum_i truncation.limbs[i] * 2^{limb_bits * i} (mod modulus::<F>) in the native field F
value is equal to sum_i truncation.limbs[i] * 2^{limb_bits * i} as integers

Note this means native and value are completely determined by truncation. However, we still store them explicitly for convenience.

Implementations§

impl<F: ScalarField> ProperCrtUint<F>

pub fn limbs(&self) -> &[AssignedValue<F>]

pub fn native(&self) -> &AssignedValue<F>

pub fn value(&self) -> BigUint

Trait Implementations§

impl<F: ScalarField> AsRef<CRTInteger<F>> for ProperCrtUint<F>

fn as_ref(&self) -> &CRTInteger<F>

Converts this type into a shared reference of the (usually inferred) input type.

impl<F: Clone + ScalarField> Clone for ProperCrtUint<F>

fn clone(&self) -> ProperCrtUint<F>

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl<F: Debug + ScalarField> Debug for ProperCrtUint<F>

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

Formats the value using the given formatter. Read more

impl<'a, F: ScalarField> From<&'a ProperCrtUint<F>> for CRTInteger<F>

fn from(x: &'a ProperCrtUint<F>) -> Self

Converts to this type from the input type.

impl<'a, F: ScalarField> From<&'a ProperCrtUint<F>> for ProperCrtUint<F>

fn from(x: &'a ProperCrtUint<F>) -> Self

Converts to this type from the input type.

impl<F: ScalarField> From<ProperCrtUint<F>> for CRTInteger<F>

fn from(x: ProperCrtUint<F>) -> Self

Converts to this type from the input type.

impl<F: ScalarField> From<ProperCrtUint<F>> for ProperUint<F>

fn from(x: ProperCrtUint<F>) -> Self

Converts to this type from the input type.

impl<F: ScalarField, Fp> From<Reduced<ProperCrtUint<F>, Fp>> for ProperCrtUint<F>

fn from(x: Reduced<ProperCrtUint<F>, Fp>) -> Self

Converts to this type from the input type.

impl<F: BigPrimeField, Fp: BigPrimeField> Selectable<F, ProperCrtUint<F>> for FpChip<'_, F, Fp>

fn select( &self, ctx: &mut Context<F>, a: ProperCrtUint<F>, b: ProperCrtUint<F>, sel: AssignedValue<F>, ) -> ProperCrtUint<F>

fn select_by_indicator( &self, ctx: &mut Context<F>, a: &impl AsRef<[ProperCrtUint<F>]>, coeffs: &[AssignedValue<F>], ) -> ProperCrtUint<F>

Auto Trait Implementations§

impl<F> Freeze for ProperCrtUint<F>
where F: Freeze,

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

impl<F> Send for ProperCrtUint<F>

impl<F> Sync for ProperCrtUint<F>

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

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

Blanket Implementations§

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

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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Causes self to use its Binary implementation when Debug-formatted.

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Causes self to use its Display implementation when Debug-formatted.

fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.

fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.

fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.

fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.

fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.

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type Output = T

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impl<F, Fp, Pt, FC> Selectable<F, Reduced<Pt, Fp>> for FC
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fn select( &self, ctx: &mut Context<F>, a: Reduced<Pt, Fp>, b: Reduced<Pt, Fp>, sel: AssignedValue<F>, ) -> Reduced<Pt, Fp>

fn select_by_indicator( &self, ctx: &mut Context<F>, a: &impl AsRef<[Reduced<Pt, Fp>]>, coeffs: &[AssignedValue<F>], ) -> Reduced<Pt, Fp>

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