Trait rug::ops::AssignRound [−][src]
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
Required methods
fn assign_round(&mut self, src: Src, round: Self::Round) -> Self::Ordering[src][−]
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);