Struct snarkvm_gadgets::integers::uint::uint_impl::UInt8

pub struct UInt8 {
    pub bits: Vec<Boolean>,
    pub negated: bool,
    pub value: Option<u8>,
}

Fields

bits: Vec<Boolean>

negated: bool

value: Option<u8>

Implementations

impl UInt8

pub fn constant_vec(values: &[u8]) -> Vec<Self>

Construct a constant vector of UInt8 from a vector of u8

pub fn alloc_vec<F, CS, T>(
    cs: CS,
    values: &[T]
) -> Result<Vec<Self>, SynthesisError> where
    F: Field,
    CS: ConstraintSystem<F>,
    T: Into<Option<u8>> + Copy, 

pub fn alloc_input_vec_le<F, CS>(
    cs: CS,
    values: &[u8]
) -> Result<Vec<Self>, SynthesisError> where
    F: PrimeField,
    CS: ConstraintSystem<F>, 

Allocates a vector of u8’s by first converting (chunks of) them to F elements, (thus reducing the number of input allocations), and then converts this list of F gadgets back into bytes.

Trait Implementations

impl<F: Field + PrimeField> Add<F, UInt8> for UInt8

type ErrorType = UnsignedIntegerError

fn add<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Self, Self::ErrorType>

impl<F: Field> AllocGadget<<UInt8 as Integer>::IntegerType, F> for UInt8

fn alloc<Fn: FnOnce() -> Result<T, SynthesisError>, T: Borrow<<UInt8 as Integer>::IntegerType>, CS: ConstraintSystem<F>>(
    cs: CS,
    value_gen: Fn
) -> Result<Self, SynthesisError>

fn alloc_input<Fn: FnOnce() -> Result<T, SynthesisError>, T: Borrow<<UInt8 as Integer>::IntegerType>, CS: ConstraintSystem<F>>(
    cs: CS,
    value_gen: Fn
) -> Result<Self, SynthesisError>

fn alloc_constant<Fn: FnOnce() -> Result<T, SynthesisError>, T: Borrow<V>, CS: ConstraintSystem<F>>(
    _cs: CS,
    _f: Fn
) -> Result<Self, SynthesisError>

fn alloc_checked<Fn: FnOnce() -> Result<T, SynthesisError>, T: Borrow<V>, CS: ConstraintSystem<F>>(
    cs: CS,
    f: Fn
) -> Result<Self, SynthesisError>

fn alloc_input_checked<Fn: FnOnce() -> Result<T, SynthesisError>, T: Borrow<V>, CS: ConstraintSystem<F>>(
    cs: CS,
    f: Fn
) -> Result<Self, SynthesisError>

impl Clone for UInt8

fn clone(&self) -> UInt8

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<F: Field + PrimeField> ComparatorGadget<F> for UInt8

fn greater_than<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Boolean, SynthesisError>

fn less_than_or_equal<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Boolean, SynthesisError>

fn greater_than_or_equal<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Boolean, SynthesisError>

impl<F: PrimeField> CondSelectGadget<F> for UInt8

fn conditionally_select<CS: ConstraintSystem<F>>(
    cs: CS,
    cond: &Boolean,
    first: &Self,
    second: &Self
) -> Result<Self, SynthesisError>

fn cost() -> usize

impl<F: Field> ConditionalEqGadget<F> for UInt8

fn conditional_enforce_equal<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self,
    condition: &Boolean
) -> Result<(), SynthesisError>

fn cost() -> usize

impl Debug for UInt8

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

Formats the value using the given formatter.

impl<F: PrimeField> Div<F, UInt8> for UInt8

type ErrorType = UnsignedIntegerError

fn div<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Self, Self::ErrorType>

impl<F: Field> EqGadget<F> for UInt8

fn is_eq<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Boolean, SynthesisError>

Output a Boolean value representing whether self.value() == other.value().

fn enforce_equal<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<(), SynthesisError>

fn cost() -> usize

impl<F: PrimeField> EvaluateEqGadget<F> for UInt8

fn evaluate_equal<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Boolean, SynthesisError>

impl<F: Field + PrimeField> EvaluateLtGadget<F> for UInt8

fn less_than<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Boolean, SynthesisError>

impl Integer for UInt8

type IntegerType = u8

type UnsignedGadget = UInt8

type UnsignedIntegerType = u8

const SIZE: usize

fn constant(value: u8) -> Self

fn one() -> Self

fn zero() -> Self

fn new(bits: Vec<Boolean>, value: Option<Self::IntegerType>) -> Self

fn is_constant(&self) -> bool

Returns true if all bits in this Int are constant

fn to_bits_le(&self) -> Vec<Boolean>

fn to_bits_be(&self) -> Vec<Boolean>

fn from_bits_le(bits: &[Boolean]) -> Self

fn get_value(&self) -> Option<String>

fn result_is_constant(first: &Self, second: &Self) -> bool

Returns true if both Int objects have constant bits

impl PartialEq<UInt8> for UInt8

fn eq(&self, other: &Self) -> 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 !=.

impl PartialOrd<UInt8> for UInt8

fn partial_cmp(&self, other: &Self) -> 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<F: PrimeField> Pow<F, UInt8> for UInt8

fn pow<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Self, Self::ErrorType>

Bitwise exponentiation of two unsized integers. Reference: /snarkVM/models/src/curves/field.rs

type ErrorType = UnsignedIntegerError

impl<F: PrimeField> Sub<F, UInt8> for UInt8

type ErrorType = UnsignedIntegerError

fn sub<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Self, Self::ErrorType>

impl<F: Field> ToBytesGadget<F> for UInt8

fn to_bytes<CS: ConstraintSystem<F>>(
    &self,
    _cs: CS
) -> Result<Vec<UInt8>, SynthesisError>

fn to_bytes_strict<CS: ConstraintSystem<F>>(
    &self,
    cs: CS
) -> Result<Vec<UInt8>, SynthesisError>

Additionally checks if the produced list of booleans is ‘valid’.

impl UInt for UInt8

fn negate(&self) -> Self

Returns the inverse UInt

fn rotr(&self, by: usize) -> Self

Rotate self bits by size

fn addmany<F: PrimeField, CS: ConstraintSystem<F>>(
    cs: CS,
    operands: &[Self]
) -> Result<Self, SynthesisError>

Perform modular addition of several UInt objects.

fn mul<F: PrimeField, CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Self, UnsignedIntegerError>

Perform Bitwise multiplication of two UInt objects. Reference: https://en.wikipedia.org/wiki/Binary_multiplier

impl<F: PrimeField> Xor<F, UInt8> for UInt8

fn xor<CS: ConstraintSystem<F>>(
    &self,
    cs: CS,
    other: &Self
) -> Result<Self, SynthesisError>

impl Eq for UInt8