[−][src]Trait rug::ops::AssignRound

pub trait AssignRound<Src = Self> {
    type Round;
    type Ordering;
    fn assign_round(&mut self, src: Src, round: Self::Round) -> Self::Ordering;
}

Assignment with a specified rounding method.

Examples

use core::cmp::Ordering;
use rug::{float::Round, ops::AssignRound};
struct F(f64);
impl AssignRound<f64> for F {
    type Round = Round;
    type Ordering = Ordering;
    fn assign_round(&mut self, rhs: f64, _round: Round) -> Ordering {
        self.0 = rhs;
        Ordering::Equal
    }
}
let mut f = F(3.0);
let dir = f.assign_round(5.0, Round::Nearest);
assert_eq!(f.0, 5.0);
assert_eq!(dir, Ordering::Equal);

Associated Types

`type Round`

The rounding method.

`type Ordering`

The direction from rounding.

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Required methods

`fn assign_round(&mut self, src: Src, round: Self::Round) -> Self::Ordering`

Peforms the assignment.

Examples

use core::cmp::Ordering;
use rug::{float::Round, ops::AssignRound, Float};
// only four significant bits
let mut f = Float::new(4);
let dir = f.assign_round(3.3, Round::Nearest);
// 3.3 rounded down to 3.25
assert_eq!(f, 3.25);
assert_eq!(dir, Ordering::Less);
let dir = f.assign_round(3.3, Round::Up);
// 3.3 rounded up to 3.5
assert_eq!(f, 3.5);
assert_eq!(dir, Ordering::Greater);

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Implementors

`impl AssignRound<Constant> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: Constant, round: Round) -> Ordering`[src]

`impl AssignRound<Special> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: Special, _round: Round) -> Ordering`[src]

`impl AssignRound<f32> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: f32, round: Round) -> Ordering`[src]

`impl AssignRound<f64> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: f64, round: Round) -> Ordering`[src]

`impl AssignRound<i128> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: i128, round: Round) -> Ordering`[src]

`impl AssignRound<i16> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: i16, round: Round) -> Ordering`[src]

`impl AssignRound<i32> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: i32, round: Round) -> Ordering`[src]

`impl AssignRound<i64> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: i64, round: Round) -> Ordering`[src]

`impl AssignRound<i8> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: i8, round: Round) -> Ordering`[src]

`impl AssignRound<isize> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: isize, round: Round) -> Ordering`[src]

`impl AssignRound<u128> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: u128, round: Round) -> Ordering`[src]

`impl AssignRound<u16> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: u16, round: Round) -> Ordering`[src]

`impl AssignRound<u32> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: u32, round: Round) -> Ordering`[src]

`impl AssignRound<u64> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: u64, round: Round) -> Ordering`[src]

`impl AssignRound<u8> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: u8, round: Round) -> Ordering`[src]

`impl AssignRound<usize> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: usize, round: Round) -> Ordering`[src]

`impl AssignRound<Complex> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

`fn assign_round( &mut self, src: Complex, round: (Round, Round) ) -> (Ordering, Ordering)`[src]

`impl AssignRound<Float> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: Float, round: Round) -> Ordering`[src]

`impl AssignRound<Integer> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: Integer, round: Round) -> Ordering`[src]

`impl AssignRound<Rational> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: Rational, round: Round) -> Ordering`[src]

`impl<'_> AssignRound<&'_ Constant> for Float`[src]

`type Round = <Float as AssignRound<Constant>>::Round`

`type Ordering = <Float as AssignRound<Constant>>::Ordering`

`fn assign_round(&mut self, src: &Constant, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ Special> for Float`[src]

`type Round = <Float as AssignRound<Special>>::Round`

`type Ordering = <Float as AssignRound<Special>>::Ordering`

`fn assign_round(&mut self, src: &Special, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ f32> for Float`[src]

`type Round = <Float as AssignRound<f32>>::Round`

`type Ordering = <Float as AssignRound<f32>>::Ordering`

`fn assign_round(&mut self, src: &f32, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ f64> for Float`[src]

`type Round = <Float as AssignRound<f64>>::Round`

`type Ordering = <Float as AssignRound<f64>>::Ordering`

`fn assign_round(&mut self, src: &f64, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ i128> for Float`[src]

`type Round = <Float as AssignRound<i128>>::Round`

`type Ordering = <Float as AssignRound<i128>>::Ordering`

`fn assign_round(&mut self, src: &i128, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ i16> for Float`[src]

`type Round = <Float as AssignRound<i16>>::Round`

`type Ordering = <Float as AssignRound<i16>>::Ordering`

`fn assign_round(&mut self, src: &i16, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ i32> for Float`[src]

`type Round = <Float as AssignRound<i32>>::Round`

`type Ordering = <Float as AssignRound<i32>>::Ordering`

`fn assign_round(&mut self, src: &i32, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ i64> for Float`[src]

`type Round = <Float as AssignRound<i64>>::Round`

`type Ordering = <Float as AssignRound<i64>>::Ordering`

`fn assign_round(&mut self, src: &i64, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ i8> for Float`[src]

`type Round = <Float as AssignRound<i8>>::Round`

`type Ordering = <Float as AssignRound<i8>>::Ordering`

`fn assign_round(&mut self, src: &i8, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ isize> for Float`[src]

`type Round = <Float as AssignRound<isize>>::Round`

`type Ordering = <Float as AssignRound<isize>>::Ordering`

`fn assign_round(&mut self, src: &isize, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ u128> for Float`[src]

`type Round = <Float as AssignRound<u128>>::Round`

`type Ordering = <Float as AssignRound<u128>>::Ordering`

`fn assign_round(&mut self, src: &u128, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ u16> for Float`[src]

`type Round = <Float as AssignRound<u16>>::Round`

`type Ordering = <Float as AssignRound<u16>>::Ordering`

`fn assign_round(&mut self, src: &u16, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ u32> for Float`[src]

`type Round = <Float as AssignRound<u32>>::Round`

`type Ordering = <Float as AssignRound<u32>>::Ordering`

`fn assign_round(&mut self, src: &u32, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ u64> for Float`[src]

`type Round = <Float as AssignRound<u64>>::Round`

`type Ordering = <Float as AssignRound<u64>>::Ordering`

`fn assign_round(&mut self, src: &u64, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ u8> for Float`[src]

`type Round = <Float as AssignRound<u8>>::Round`

`type Ordering = <Float as AssignRound<u8>>::Ordering`

`fn assign_round(&mut self, src: &u8, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ usize> for Float`[src]

`type Round = <Float as AssignRound<usize>>::Round`

`type Ordering = <Float as AssignRound<usize>>::Ordering`

`fn assign_round(&mut self, src: &usize, round: Self::Round) -> Self::Ordering`[src]

`impl<'_> AssignRound<&'_ Complex> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

`fn assign_round( &mut self, src: &Complex, round: (Round, Round) ) -> (Ordering, Ordering)`[src]

`impl<'_> AssignRound<&'_ Float> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: &Float, round: Round) -> Ordering`[src]

`impl<'_> AssignRound<&'_ Integer> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: &Integer, round: Round) -> Ordering`[src]

`impl<'_> AssignRound<&'_ Rational> for Float`[src]

`type Round = Round`

`type Ordering = Ordering`

`fn assign_round(&mut self, src: &Rational, round: Round) -> Ordering`[src]

`impl<'a, Re, Im> AssignRound<&'a (Re, Im)> for Complex where Float: AssignRound<&'a Re, Round = Round, Ordering = Ordering> + AssignRound<&'a Im, Round = Round, Ordering = Ordering>,` [src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

`fn assign_round( &mut self, src: &'a (Re, Im), round: (Round, Round) ) -> (Ordering, Ordering)`[src]

`impl<Re> AssignRound<Re> for Complex where Float: AssignRound<Re, Round = Round, Ordering = Ordering>,` [src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

`fn assign_round( &mut self, src: Re, round: (Round, Round) ) -> (Ordering, Ordering)`[src]

`impl<Re, Im> AssignRound<(Re, Im)> for Complex where Float: AssignRound<Re, Round = Round, Ordering = Ordering> + AssignRound<Im, Round = Round, Ordering = Ordering>,` [src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

`fn assign_round( &mut self, src: (Re, Im), round: (Round, Round) ) -> (Ordering, Ordering)`[src]

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