[−][src]Enum rug::float::Round
The rounding methods for floating-point values.
When rounding to the nearest, if the number to be rounded is exactly between two representable numbers, it is rounded to the even one, that is, the one with the least significant bit set to zero.
Examples
use rug::float::Round; use rug::ops::AssignRound; use rug::Float; let mut f4 = Float::new(4); f4.assign_round(10.4, Round::Nearest); assert_eq!(f4, 10); f4.assign_round(10.6, Round::Nearest); assert_eq!(f4, 11); f4.assign_round(-10.7, Round::Zero); assert_eq!(f4, -10); f4.assign_round(10.3, Round::Up); assert_eq!(f4, 11);
Rounding to the nearest will round numbers exactly between two representable numbers to the even one.
use rug::float::Round; use rug::ops::AssignRound; use rug::Float; // 24 is 11000 in binary // 25 is 11001 in binary // 26 is 11010 in binary // 27 is 11011 in binary // 28 is 11100 in binary let mut f4 = Float::new(4); f4.assign_round(25, Round::Nearest); assert_eq!(f4, 24); f4.assign_round(27, Round::Nearest); assert_eq!(f4, 28);
Variants
Nearest
Round towards the nearest.
Zero
Round towards zero.
Up
Round towards plus infinity.
Down
Round towards minus infinity.
Trait Implementations
impl Clone for Round
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fn clone(&self) -> Round
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Ord for Round
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fn cmp(&self, other: &Round) -> Ordering
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fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
fn clamp(self, min: Self, max: Self) -> Self
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clamp
)Restrict a value to a certain interval. Read more
impl Default for Round
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impl PartialOrd<Round> for Round
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fn partial_cmp(&self, other: &Round) -> Option<Ordering>
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#[must_use]
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]
fn le(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
#[must_use]
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
#[must_use]
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl PartialEq<Round> for Round
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fn eq(&self, other: &Round) -> bool
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#[must_use]
fn ne(&self, other: &Rhs) -> bool
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This method tests for !=
.
impl Copy for Round
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impl Eq for Round
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impl Debug for Round
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impl Hash for Round
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Auto Trait Implementations
impl Sync for Round
impl Send for Round
impl Unpin for Round
impl RefUnwindSafe for Round
impl UnwindSafe for Round
Blanket Implementations
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,