Trait rug::ops::SubRound

pub trait SubRound<Rhs = Self> {
    type Round;
    type Ordering;
    type Output;
    fn sub_round(
        self, 
        rhs: Rhs, 
        round: Self::Round
    ) -> (Self::Output, Self::Ordering);
}

Subtraction with a specified rounding method.

Associated Types

type Round

The rounding method.

type Ordering

The direction from rounding.

type Output

The resulting type after the subtraction.

Required Methods

fn sub_round(
    self,
    rhs: Rhs,
    round: Self::Round
) -> (Self::Output, Self::Ordering)

Performs the subtraction.

Examples

use rug::Float;
use rug::float::Round;
use rug::ops::SubRound;
use std::cmp::Ordering;
// only four significant bits
let minus_three = Float::from((-3, 4));
let (f, dir) = minus_three.sub_round(0.3, Round::Nearest);
// -3.3 rounded up to -3.25
assert_eq!(f, -3.25);
assert_eq!(dir, Ordering::Greater);

Implementors

• impl<'a> SubRound<&'a Float> for Float
• impl SubRound<Float> for Float
• impl<'a> SubRound<Float> for &'a Float
• impl<'a> SubRound<&'a Integer> for Float
• impl SubRound<Integer> for Float
• impl<'a> SubRound<Float> for &'a Integer
• impl SubRound<Float> for Integer
• impl<'a> SubRound<&'a Rational> for Float
• impl SubRound<Rational> for Float
• impl<'a> SubRound<Float> for &'a Rational
• impl SubRound<Float> for Rational
• impl SubRound<i32> for Float
• impl SubRound<Float> for i32
• impl SubRound<u32> for Float
• impl SubRound<Float> for u32
• impl SubRound<f32> for Float
• impl SubRound<Float> for f32
• impl SubRound<f64> for Float
• impl SubRound<Float> for f64
• impl<'a> SubRound<&'a Complex> for Complex
• impl SubRound<Complex> for Complex
• impl<'a> SubRound<Complex> for &'a Complex
• impl<'a> SubRound<&'a Float> for Complex
• impl SubRound<Float> for Complex
• impl<'a> SubRound<Complex> for &'a Float
• impl SubRound<Complex> for Float
• impl SubRound<u32> for Complex
• impl SubRound<Complex> for u32
• impl SubRound<i32> for Complex
• impl SubRound<Complex> for i32