[−][src]Trait rug::ops::PowFromRound
Compound power operation and assignment to the rhs operand with a specified rounding method.
Examples
use rug::float::Round; use rug::ops::{PowAssignRound, PowFromRound}; use rug::Float; use std::cmp::Ordering; struct F(f64); impl PowFromRound<f64> for F { type Round = Round; type Ordering = Ordering; fn pow_from_round(&mut self, lhs: f64, round: Round) -> Ordering { let mut f = Float::with_val(53, lhs); let dir = f.pow_assign_round(self.0, round); self.0 = f.to_f64(); dir } } let mut f = F(5.0); let dir = f.pow_from_round(3.0, Round::Nearest); // 3.0 ^ 5.0 = 243.0 assert_eq!(f.0, 243.0); assert_eq!(dir, Ordering::Equal);
Associated Types
Loading content...Required methods
fn pow_from_round(&mut self, lhs: Lhs, round: Self::Round) -> Self::Ordering
Performs the power operation.
Examples
use rug::Float; use rug::float::Round; use rug::ops::PowFromRound; use std::cmp::Ordering; // only four significant bits let mut f = Float::with_val(4, 5); let dir = f.pow_from_round(-3, Round::Nearest); // −243 rounded up to −240 assert_eq!(f, -240); assert_eq!(dir, Ordering::Greater);
Implementors
impl PowFromRound<f32> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: f32, round: Round) -> Ordering
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impl PowFromRound<f64> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: f64, round: Round) -> Ordering
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impl PowFromRound<i32> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: i32, round: Round) -> Ordering
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impl PowFromRound<u32> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: u32, round: Round) -> Ordering
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impl PowFromRound<Complex> for Complex
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type Round = (Round, Round)
type Ordering = (Ordering, Ordering)
fn pow_from_round(
&mut self,
lhs: Complex,
round: (Round, Round)
) -> (Ordering, Ordering)
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&mut self,
lhs: Complex,
round: (Round, Round)
) -> (Ordering, Ordering)
impl PowFromRound<Float> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: Float, round: Round) -> Ordering
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impl<'_> PowFromRound<&'_ f32> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: &f32, round: Round) -> Ordering
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impl<'_> PowFromRound<&'_ f64> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: &f64, round: Round) -> Ordering
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impl<'_> PowFromRound<&'_ i32> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: &i32, round: Round) -> Ordering
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impl<'_> PowFromRound<&'_ u32> for Float
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type Round = Round
type Ordering = Ordering
fn pow_from_round(&mut self, lhs: &u32, round: Round) -> Ordering
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impl<'_> PowFromRound<&'_ Complex> for Complex
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type Round = (Round, Round)
type Ordering = (Ordering, Ordering)
fn pow_from_round(
&mut self,
lhs: &Complex,
round: (Round, Round)
) -> (Ordering, Ordering)
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&mut self,
lhs: &Complex,
round: (Round, Round)
) -> (Ordering, Ordering)