[−][src]Trait rug::ops::MulFromRound

pub trait MulFromRound<Lhs = Self> {
type Round;
type Ordering;
    fn mul_from_round(&mut self, rhs: Lhs, round: Self::Round) -> Self::Ordering;
}

Compound multiplication and assignment to the rhs operand with a specified rounding method.

Examples

use rug::float::Round;
use rug::ops::{MulAssignRound, MulFromRound};
use rug::Float;
use std::cmp::Ordering;
struct F(f64);
impl MulFromRound<f64> for F {
    type Round = Round;
    type Ordering = Ordering;
    fn mul_from_round(&mut self, lhs: f64, round: Round) -> Ordering {
        let mut f = Float::with_val(53, lhs);
        let dir = f.mul_assign_round(self.0, round);
        self.0 = f.to_f64();
        dir
    }
}
let mut f = F(5.0);
let dir = f.mul_from_round(3.0, Round::Nearest);
// 3.0 × 5.0 = 15.0
assert_eq!(f.0, 15.0);
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 mul_from_round(&mut self, rhs: Lhs, round: Self::Round) -> Self::Ordering`

Performs the multiplication.

Examples

use rug::Float;
use rug::float::Round;
use rug::ops::MulFromRound;
use std::cmp::Ordering;
// only four significant bits
let mut f = Float::with_val(4, 13);
let dir = f.mul_from_round(-3, Round::Nearest);
// −39 rounded down to −40
assert_eq!(f, -40);
assert_eq!(dir, Ordering::Less);

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Implementors

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl MulFromRound<f32> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl MulFromRound<f64> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl MulFromRound<i32> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl MulFromRound<u32> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

`impl MulFromRound<Float> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl MulFromRound<Integer> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl MulFromRound<Rational> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl<'_> MulFromRound<&'_ f32> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl<'_> MulFromRound<&'_ f64> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl<'_> MulFromRound<&'_ i32> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

`impl<'_> MulFromRound<&'_ u32> for Complex`[src]

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

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

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

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

`type Round = (Round, Round)`

`type Ordering = (Ordering, Ordering)`

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

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

`type Round = Round`

`type Ordering = Ordering`

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

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