Trait polkadot_sdk_frame::arithmetic::traits::CheckedRem

pub trait CheckedRem: Sized + Rem<Output = Self> {
    // Required method
    fn checked_rem(&self, v: &Self) -> Option<Self>;
}

Performs an integral remainder that returns None instead of panicking on division by zero and instead of wrapping around on underflow and overflow.

Required Methods

fn checked_rem(&self, v: &Self) -> Option<Self>

Finds the remainder of dividing two numbers, checking for underflow, overflow and division by zero. If any of that happens, None is returned.

Examples

use num_traits::CheckedRem;
use std::i32::MIN;

assert_eq!(CheckedRem::checked_rem(&10, &7), Some(3));
assert_eq!(CheckedRem::checked_rem(&10, &-7), Some(3));
assert_eq!(CheckedRem::checked_rem(&-10, &7), Some(-3));
assert_eq!(CheckedRem::checked_rem(&-10, &-7), Some(-3));

assert_eq!(CheckedRem::checked_rem(&10, &0), None);

assert_eq!(CheckedRem::checked_rem(&MIN, &1), Some(0));
assert_eq!(CheckedRem::checked_rem(&MIN, &-1), None);

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl CheckedRem for i8

fn checked_rem(&self, v: &i8) -> Option<i8>

impl CheckedRem for i16

fn checked_rem(&self, v: &i16) -> Option<i16>

impl CheckedRem for i32

fn checked_rem(&self, v: &i32) -> Option<i32>

impl CheckedRem for i64

fn checked_rem(&self, v: &i64) -> Option<i64>

impl CheckedRem for i128

fn checked_rem(&self, v: &i128) -> Option<i128>

impl CheckedRem for isize

fn checked_rem(&self, v: &isize) -> Option<isize>

impl CheckedRem for u8

fn checked_rem(&self, v: &u8) -> Option<u8>

impl CheckedRem for u16

fn checked_rem(&self, v: &u16) -> Option<u16>

impl CheckedRem for u32

fn checked_rem(&self, v: &u32) -> Option<u32>

impl CheckedRem for u64

fn checked_rem(&self, v: &u64) -> Option<u64>

impl CheckedRem for u128

fn checked_rem(&self, v: &u128) -> Option<u128>

impl CheckedRem for usize

fn checked_rem(&self, v: &usize) -> Option<usize>

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

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

fn checked_rem( &self, rhs: &TypeWithDefault<T, D>, ) -> Option<TypeWithDefault<T, D>>

Implementors