Trait rug::ops::RemAssignRound
source · [−]pub trait RemAssignRound<Rhs = Self> {
type Round;
type Ordering;
fn rem_assign_round(
&mut self,
rhs: Rhs,
round: Self::Round
) -> Self::Ordering;
}Expand description
Compound remainder operation and assignment with a specified rounding method.
Examples
use core::cmp::Ordering;
use rug::{float::Round, ops::RemAssignRound, Float};
struct F(f64);
impl RemAssignRound<f64> for F {
type Round = Round;
type Ordering = Ordering;
fn rem_assign_round(&mut self, rhs: f64, round: Round) -> Ordering {
let mut f = Float::with_val(53, self.0);
let dir = f.rem_assign_round(rhs, round);
self.0 = f.to_f64();
dir
}
}
let mut f = F(3.25);
let dir = f.rem_assign_round(1.25, Round::Nearest);
// 3.25 % 1.25 = 0.75
assert_eq!(f.0, 0.75);
assert_eq!(dir, Ordering::Equal);Required Associated Types
Required Methods
fn rem_assign_round(&mut self, rhs: Rhs, round: Self::Round) -> Self::Ordering
fn rem_assign_round(&mut self, rhs: Rhs, round: Self::Round) -> Self::Ordering
Performs the remainder operation.
Examples
use core::cmp::Ordering;
use rug::{float::Round, ops::RemAssignRound, Float};
// only four significant bits
let mut f = Float::with_val(4, 64);
let dir = f.rem_assign_round(33, Round::Nearest);
// 31 rounded up to 32
assert_eq!(f, 32);
assert_eq!(dir, Ordering::Greater);