[][src]Trait sp_runtime::traits::CheckedSub

pub trait CheckedSub: Sub<Self, Output = Self> {
    pub fn checked_sub(&self, v: &Self) -> Option<Self>;
}

Performs subtraction that returns None instead of wrapping around on underflow.

Required methods

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

Subtracts two numbers, checking for underflow. If underflow happens, None is returned.

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Implementations on Foreign Types

impl<T> CheckedSub for Ratio<T> where
    T: Clone + Integer + CheckedSub + CheckedMul
[src]

impl CheckedSub for BigUint[src]

impl CheckedSub for BigInt[src]

impl CheckedSub for usize[src]

impl CheckedSub for i128[src]

impl CheckedSub for u8[src]

impl CheckedSub for i64[src]

impl CheckedSub for u32[src]

impl CheckedSub for i32[src]

impl CheckedSub for i8[src]

impl CheckedSub for u64[src]

impl CheckedSub for isize[src]

impl CheckedSub for u128[src]

impl CheckedSub for i16[src]

impl CheckedSub for u16[src]

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Implementors

impl CheckedSub for FixedI64[src]

impl CheckedSub for FixedI128[src]

impl CheckedSub for FixedU128[src]

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