Trait ModPowerOf2Sub 

pub trait ModPowerOf2Sub<RHS = Self> {
    type Output;

    // Required method
    fn mod_power_of_2_sub(self, other: RHS, pow: u64) -> Self::Output;
}

Subtracts two numbers modulo $2^k$. The inputs must be already reduced modulo $2^k$.

Required Associated Types

type Output

Required Methods

fn mod_power_of_2_sub(self, other: RHS, pow: u64) -> Self::Output

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl ModPowerOf2Sub for u8

fn mod_power_of_2_sub(self, other: u8, pow: u64) -> u8

Subtracts two numbers modulo a third number $2^k$. The inputs must be already reduced modulo $2^k$.

$f(x, y, k) = z$, where $x, y, z < 2^k$ and $x - y \equiv z \mod 2^k$.

Worst-case complexity

Constant time and additional memory.

Panics

Panics if pow is greater than Self::WIDTH or if self or other are greater than or equal to $2^k$.

Examples

See here.

type Output = u8

impl ModPowerOf2Sub for u16

fn mod_power_of_2_sub(self, other: u16, pow: u64) -> u16

Subtracts two numbers modulo a third number $2^k$. The inputs must be already reduced modulo $2^k$.

$f(x, y, k) = z$, where $x, y, z < 2^k$ and $x - y \equiv z \mod 2^k$.

Worst-case complexity

Constant time and additional memory.

Panics

Panics if pow is greater than Self::WIDTH or if self or other are greater than or equal to $2^k$.

Examples

See here.

type Output = u16

impl ModPowerOf2Sub for u32

fn mod_power_of_2_sub(self, other: u32, pow: u64) -> u32

Subtracts two numbers modulo a third number $2^k$. The inputs must be already reduced modulo $2^k$.

$f(x, y, k) = z$, where $x, y, z < 2^k$ and $x - y \equiv z \mod 2^k$.

Worst-case complexity

Constant time and additional memory.

Panics

Panics if pow is greater than Self::WIDTH or if self or other are greater than or equal to $2^k$.

Examples

See here.

type Output = u32

impl ModPowerOf2Sub for u64

fn mod_power_of_2_sub(self, other: u64, pow: u64) -> u64

Subtracts two numbers modulo a third number $2^k$. The inputs must be already reduced modulo $2^k$.

$f(x, y, k) = z$, where $x, y, z < 2^k$ and $x - y \equiv z \mod 2^k$.

Worst-case complexity

Constant time and additional memory.

Panics

Panics if pow is greater than Self::WIDTH or if self or other are greater than or equal to $2^k$.

Examples

See here.

type Output = u64

impl ModPowerOf2Sub for u128

fn mod_power_of_2_sub(self, other: u128, pow: u64) -> u128

Subtracts two numbers modulo a third number $2^k$. The inputs must be already reduced modulo $2^k$.

$f(x, y, k) = z$, where $x, y, z < 2^k$ and $x - y \equiv z \mod 2^k$.

Worst-case complexity

Constant time and additional memory.

Panics

Panics if pow is greater than Self::WIDTH or if self or other are greater than or equal to $2^k$.

Examples

See here.

type Output = u128

impl ModPowerOf2Sub for usize

fn mod_power_of_2_sub(self, other: usize, pow: u64) -> usize

Subtracts two numbers modulo a third number $2^k$. The inputs must be already reduced modulo $2^k$.

$f(x, y, k) = z$, where $x, y, z < 2^k$ and $x - y \equiv z \mod 2^k$.

Worst-case complexity

Constant time and additional memory.

Panics

Panics if pow is greater than Self::WIDTH or if self or other are greater than or equal to $2^k$.

Examples

See here.

type Output = usize

Implementors