Trait fixnum::ops::CheckedSub

pub trait CheckedSub<Rhs = Self> {
    type Output;
    type Error;
    pub fn csub(self, rhs: Rhs) -> Result<Self::Output, Self::Error>;
}

Associated Types

type Output

type Error

Loading content...

Required methods

pub fn csub(self, rhs: Rhs) -> Result<Self::Output, Self::Error>

Checked subtraction. Returns Err on overflow.

use fixnum::{FixedPoint, typenum::U9, ops::CheckedSub};

type Amount = FixedPoint<i64, U9>;

fn amount(s: &str) -> FixedPoint<i64, U9> { s.parse().unwrap() }

assert_eq!(amount("0.3").csub(amount("0.1"))?, amount("0.2"));

Loading content...

Implementations on Foreign Types

impl CheckedSub<i8> for i8

type Output = i8

type Error = ArithmeticError

pub fn csub(self, rhs: Self) -> Result<Self::Output, Self::Error>

impl CheckedSub<i16> for i16

type Output = i16

type Error = ArithmeticError

pub fn csub(self, rhs: Self) -> Result<Self::Output, Self::Error>

impl CheckedSub<i32> for i32

type Output = i32

type Error = ArithmeticError

pub fn csub(self, rhs: Self) -> Result<Self::Output, Self::Error>

impl CheckedSub<i64> for i64

type Output = i64

type Error = ArithmeticError

pub fn csub(self, rhs: Self) -> Result<Self::Output, Self::Error>

impl CheckedSub<i128> for i128

type Output = i128

type Error = ArithmeticError

pub fn csub(self, rhs: Self) -> Result<Self::Output, Self::Error>

Loading content...

Implementors

impl<P: Precision> CheckedSub<FixedPoint<i16, P>> for FixedPoint<i16, P>

type Output = FixedPoint<i16, P>

type Error = ArithmeticError

pub fn csub(
    self,
    rhs: FixedPoint<i16, P>
) -> Result<FixedPoint<i16, P>, ArithmeticError>

impl<P: Precision> CheckedSub<FixedPoint<i32, P>> for FixedPoint<i32, P>

type Output = FixedPoint<i32, P>

type Error = ArithmeticError

pub fn csub(
    self,
    rhs: FixedPoint<i32, P>
) -> Result<FixedPoint<i32, P>, ArithmeticError>

impl<P: Precision> CheckedSub<FixedPoint<i64, P>> for FixedPoint<i64, P>

type Output = FixedPoint<i64, P>

type Error = ArithmeticError

pub fn csub(
    self,
    rhs: FixedPoint<i64, P>
) -> Result<FixedPoint<i64, P>, ArithmeticError>

Loading content...