Trait sp_runtime::traits::CheckedAdd

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

Performs addition that returns None instead of wrapping around on overflow.

Required Methods

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

Adds two numbers, checking for overflow. If overflow happens, None is returned.

Implementations on Foreign Types

impl CheckedAdd for FixedU64

fn checked_add(&self, rhs: &FixedU64) -> Option<FixedU64>

impl CheckedAdd for usize

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

impl CheckedAdd for u32

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

impl CheckedAdd for u16

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

impl CheckedAdd for i8

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

impl CheckedAdd for i64

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

impl CheckedAdd for u64

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

impl CheckedAdd for i16

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

impl CheckedAdd for isize

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

impl CheckedAdd for i128

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

impl CheckedAdd for u8

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

impl CheckedAdd for u128

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

impl CheckedAdd for i32

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

impl<T> CheckedAdd for Ratio<T>where T: Clone + Integer + CheckedMul + CheckedAdd,

fn checked_add(&self, rhs: &Ratio<T>) -> Option<Ratio<T>>

impl CheckedAdd for BigUint

fn checked_add(&self, v: &BigUint) -> Option<BigUint>

impl CheckedAdd for BigInt

fn checked_add(&self, v: &BigInt) -> Option<BigInt>

impl CheckedAdd for Weight

fn checked_add(&self, rhs: &Weight) -> Option<Weight>

Implementors

impl CheckedAdd for FixedI64

impl CheckedAdd for FixedI128

impl CheckedAdd for FixedU128

impl CheckedAdd for PerU16

impl CheckedAdd for Perbill

impl CheckedAdd for Percent

impl CheckedAdd for Permill

impl CheckedAdd for Perquintill