Trait 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);

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors