Trait polkadot_sdk_frame::arithmetic::traits::CheckedShl

pub trait CheckedShl: Sized + Shl<u32, Output = Self> {
    // Required method
    fn checked_shl(&self, rhs: u32) -> Option<Self>;
}

Performs a left shift that returns None on shifts larger than or equal to the type width.

Required Methods

fn checked_shl(&self, rhs: u32) -> Option<Self>

Checked shift left. Computes self << rhs, returning None if rhs is larger than or equal to the number of bits in self.

use num_traits::CheckedShl;

let x: u16 = 0x0001;

assert_eq!(CheckedShl::checked_shl(&x, 0),  Some(0x0001));
assert_eq!(CheckedShl::checked_shl(&x, 1),  Some(0x0002));
assert_eq!(CheckedShl::checked_shl(&x, 15), Some(0x8000));
assert_eq!(CheckedShl::checked_shl(&x, 16), None);

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl CheckedShl for i8

fn checked_shl(&self, rhs: u32) -> Option<i8>

impl CheckedShl for i16

fn checked_shl(&self, rhs: u32) -> Option<i16>

impl CheckedShl for i32

fn checked_shl(&self, rhs: u32) -> Option<i32>

impl CheckedShl for i64

fn checked_shl(&self, rhs: u32) -> Option<i64>

impl CheckedShl for i128

fn checked_shl(&self, rhs: u32) -> Option<i128>

impl CheckedShl for isize

fn checked_shl(&self, rhs: u32) -> Option<isize>

impl CheckedShl for u8

fn checked_shl(&self, rhs: u32) -> Option<u8>

impl CheckedShl for u16

fn checked_shl(&self, rhs: u32) -> Option<u16>

impl CheckedShl for u32

fn checked_shl(&self, rhs: u32) -> Option<u32>

impl CheckedShl for u64

fn checked_shl(&self, rhs: u32) -> Option<u64>

impl CheckedShl for u128

fn checked_shl(&self, rhs: u32) -> Option<u128>

impl CheckedShl for usize

fn checked_shl(&self, rhs: u32) -> Option<usize>

impl<T, D> CheckedShl for TypeWithDefault<T, D>

where T: CheckedShl, D: Get<T>,

fn checked_shl(&self, n: u32) -> Option<TypeWithDefault<T, D>>

Implementors