Struct Checked

pub struct Checked<T>(pub CtOption<T>);

Expand description

Provides intentionally-checked arithmetic on T.

Internally this leverages the CtOption type from the subtle crate in order to handle overflows.

Tuple Fields§

§0: CtOption<T>

Implementations§

impl<T> Checked<T>

pub fn new(val: T) -> Self

Create a new checked arithmetic wrapper for the given value.

Trait Implementations§

impl<T> Add<&Checked<T>> for &Checked<T>
where T: CheckedAdd + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the + operator.

fn add(self, rhs: &Checked<T>) -> Self::Output

Performs the + operation. Read more

impl<T> Add<&Checked<T>> for Checked<T>
where T: CheckedAdd + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the + operator.

fn add(self, rhs: &Self) -> Self::Output

Performs the + operation. Read more

impl<T> Add<Checked<T>> for &Checked<T>
where T: CheckedAdd + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the + operator.

fn add(self, rhs: Checked<T>) -> Self::Output

Performs the + operation. Read more

impl<T> Add for Checked<T>
where T: CheckedAdd + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation. Read more

impl<const LIMBS: usize> AddAssign<&Checked<Int<LIMBS>>> for Checked<Int<LIMBS>>

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

Performs the += operation. Read more

impl AddAssign<&Checked<Limb>> for Checked<Limb>

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

Performs the += operation. Read more

impl<const LIMBS: usize> AddAssign<&Checked<Uint<LIMBS>>> for Checked<Uint<LIMBS>>

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

Performs the += operation. Read more

impl<const LIMBS: usize> AddAssign for Checked<Int<LIMBS>>

fn add_assign(&mut self, other: Self)

Performs the += operation. Read more

impl AddAssign for Checked<Limb>

fn add_assign(&mut self, other: Self)

Performs the += operation. Read more

impl<const LIMBS: usize> AddAssign for Checked<Uint<LIMBS>>

fn add_assign(&mut self, other: Self)

Performs the += operation. Read more

impl<T: Clone> Clone for Checked<T>

fn clone(&self) -> Checked<T>

Returns a copy of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl<T: ConditionallySelectable> ConditionallySelectable for Checked<T>

fn conditional_select(a: &Self, b: &Self, choice: Choice) -> Self

Select a or b according to choice. Read more

fn conditional_assign(&mut self, other: &Self, choice: Choice)

Conditionally assign other to self, according to choice. Read more

fn conditional_swap(a: &mut Self, b: &mut Self, choice: Choice)

Conditionally swap self and other if choice == 1; otherwise, reassign both unto themselves. Read more

impl<T: ConstantTimeEq> ConstantTimeEq for Checked<T>

fn ct_eq(&self, rhs: &Self) -> Choice

Determine if two items are equal. Read more

fn ct_ne(&self, other: &Self) -> Choice

Determine if two items are NOT equal. Read more

impl<T: Debug> Debug for Checked<T>

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

Formats the value using the given formatter. Read more

impl<T> Default for Checked<T>
where T: Default,

fn default() -> Self

Returns the “default value” for a type. Read more

impl<'de, T: Default + Deserialize<'de>> Deserialize<'de> for Checked<T>

Available on crate feature serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl<T> Div<&Checked<T>> for &Checked<T>
where T: CheckedDiv + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the / operator.

fn div(self, rhs: &Checked<T>) -> Self::Output

Performs the / operation. Read more

impl<T> Div<&Checked<T>> for Checked<T>
where T: CheckedDiv + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the / operator.

fn div(self, rhs: &Self) -> Self::Output

Performs the / operation. Read more

impl<T> Div<Checked<T>> for &Checked<T>
where T: CheckedDiv + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the / operator.

fn div(self, rhs: Checked<T>) -> Self::Output

Performs the / operation. Read more

impl<T> Div for Checked<T>
where T: CheckedDiv + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the / operator.

fn div(self, rhs: Self) -> Self::Output

Performs the / operation. Read more

impl<T> From<Checked<T>> for CtOption<T>

fn from(checked: Checked<T>) -> CtOption<T>

Converts to this type from the input type.

impl<T> From<Checked<T>> for Option<T>

fn from(checked: Checked<T>) -> Option<T>

Converts to this type from the input type.

impl<T> From<CtOption<T>> for Checked<T>

fn from(ct_option: CtOption<T>) -> Checked<T>

Converts to this type from the input type.

impl<T> Mul<&Checked<T>> for &Checked<T>
where T: CheckedMul + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the * operator.

fn mul(self, rhs: &Checked<T>) -> Self::Output

Performs the * operation. Read more

impl<T> Mul<&Checked<T>> for Checked<T>
where T: CheckedMul + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the * operator.

fn mul(self, rhs: &Self) -> Self::Output

Performs the * operation. Read more

impl<T> Mul<Checked<T>> for &Checked<T>
where T: CheckedMul + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the * operator.

fn mul(self, rhs: Checked<T>) -> Self::Output

Performs the * operation. Read more

impl<T> Mul for Checked<T>
where T: CheckedMul + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self::Output

Performs the * operation. Read more

impl<const LIMBS: usize> MulAssign<&Checked<Int<LIMBS>>> for Checked<Int<LIMBS>>

fn mul_assign(&mut self, other: &Checked<Int<LIMBS>>)

Performs the *= operation. Read more

impl MulAssign<&Checked<Limb>> for Checked<Limb>

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

Performs the *= operation. Read more

impl<const LIMBS: usize> MulAssign<&Checked<Uint<LIMBS>>> for Checked<Uint<LIMBS>>

fn mul_assign(&mut self, other: &Checked<Uint<LIMBS>>)

Performs the *= operation. Read more

impl<const LIMBS: usize> MulAssign for Checked<Int<LIMBS>>

fn mul_assign(&mut self, other: Checked<Int<LIMBS>>)

Performs the *= operation. Read more

impl MulAssign for Checked<Limb>

fn mul_assign(&mut self, other: Self)

Performs the *= operation. Read more

impl<const LIMBS: usize> MulAssign for Checked<Uint<LIMBS>>

fn mul_assign(&mut self, other: Checked<Uint<LIMBS>>)

Performs the *= operation. Read more

impl<T: Copy + Serialize> Serialize for Checked<T>

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more

impl<T> Sub<&Checked<T>> for &Checked<T>
where T: CheckedSub + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the - operator.

fn sub(self, rhs: &Checked<T>) -> Self::Output

Performs the - operation. Read more

impl<T> Sub<&Checked<T>> for Checked<T>
where T: CheckedSub + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the - operator.

fn sub(self, rhs: &Self) -> Self::Output

Performs the - operation. Read more

impl<T> Sub<Checked<T>> for &Checked<T>
where T: CheckedSub + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the - operator.

fn sub(self, rhs: Checked<T>) -> Self::Output

Performs the - operation. Read more

impl<T> Sub for Checked<T>
where T: CheckedSub + ConditionallySelectable + Default,

type Output = Checked<T>

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation. Read more

impl<const LIMBS: usize> SubAssign<&Checked<Int<LIMBS>>> for Checked<Int<LIMBS>>

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

Performs the -= operation. Read more

impl SubAssign<&Checked<Limb>> for Checked<Limb>

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

Performs the -= operation. Read more

impl<const LIMBS: usize> SubAssign<&Checked<Uint<LIMBS>>> for Checked<Uint<LIMBS>>

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

Performs the -= operation. Read more

impl<const LIMBS: usize> SubAssign for Checked<Int<LIMBS>>

fn sub_assign(&mut self, other: Self)

Performs the -= operation. Read more

impl SubAssign for Checked<Limb>

fn sub_assign(&mut self, other: Self)

Performs the -= operation. Read more

impl<const LIMBS: usize> SubAssign for Checked<Uint<LIMBS>>

fn sub_assign(&mut self, other: Self)

Performs the -= operation. Read more

impl<T: Copy> Copy for Checked<T>

Auto Trait Implementations§

impl<T> Freeze for Checked<T>
where T: Freeze,

impl<T> RefUnwindSafe for Checked<T>
where T: RefUnwindSafe,

impl<T> Send for Checked<T>
where T: Send,

impl<T> Sync for Checked<T>
where T: Sync,

impl<T> Unpin for Checked<T>
where T: Unpin,

impl<T> UnwindSafe for Checked<T>
where T: UnwindSafe,

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

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

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

Performs copy-assignment from self to dst. Read more

impl<T> ConstantTimeSelect for T
where T: ConditionallySelectable,

fn ct_select(a: &T, b: &T, choice: Choice) -> T

Select a or b according to choice. Read more

fn ct_assign(&mut self, other: &T, choice: Choice)

Conditionally assign other to self, according to choice.

fn ct_swap(a: &mut T, b: &mut T, choice: Choice)

Conditionally swap self and other if choice == 1; otherwise, reassign both unto themselves.

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

impl<T> Same for T

type Output = T

Should always be Self

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,