Struct rug::float::OrdFloat

#[repr(transparent)]
pub struct OrdFloat { /* private fields */ }

A float that supports total ordering and hashing.

Negative zero is ordered as less than positive zero. Negative NaN is ordered as less than negative infinity, while positive NaN is ordered as greater than positive infinity. Comparing two negative NaNs or two positive NaNs produces equality.

Examples

use core::cmp::Ordering;
use rug::float::{OrdFloat, Special};
use rug::Float;

let pos_nan_f = Float::with_val(53, Special::Nan);
let pos_inf_f = Float::with_val(53, Special::Infinity);
let pos_zero_f = Float::with_val(53, Special::Zero);
let neg_zero_f = Float::with_val(53, Special::NegZero);
let neg_inf_f = Float::with_val(53, Special::NegInfinity);
let neg_nan_f = Float::with_val(53, -&pos_nan_f);
let pos_nan = OrdFloat::from(pos_nan_f);
let pos_inf = OrdFloat::from(pos_inf_f);
let pos_zero = OrdFloat::from(pos_zero_f);
let neg_zero = OrdFloat::from(neg_zero_f);
let neg_inf = OrdFloat::from(neg_inf_f);
let neg_nan = OrdFloat::from(neg_nan_f);

assert_eq!(pos_nan.cmp(&pos_nan), Ordering::Equal);
assert_eq!(neg_nan.cmp(&neg_nan), Ordering::Equal);
assert_eq!(neg_nan.cmp(&pos_nan), Ordering::Less);

assert_eq!(pos_nan.cmp(&pos_inf), Ordering::Greater);
assert_eq!(neg_nan.cmp(&neg_inf), Ordering::Less);

assert_eq!(pos_zero.cmp(&neg_zero), Ordering::Greater);

Implementations

impl OrdFloat

pub fn as_float(&self) -> &Float

Extracts the underlying Float.

The same result can be obtained using the implementation of AsRef<Float> which is provided for OrdFloat.

Examples

use rug::float::OrdFloat;
use rug::Float;
let f = Float::with_val(53, 1.5);
let ord = OrdFloat::from(f);
let f_ref = ord.as_float();
assert_eq!(f_ref.to_f64(), 1.5);

pub fn as_float_mut(&mut self) -> &mut Float

Extracts the underlying Float.

The same result can be obtained using the implementation of AsMut<Float> which is provided for OrdFloat.

Examples

use rug::float::OrdFloat;
use rug::Float;
let f = Float::with_val(53, -1.5);
let mut ord = OrdFloat::from(f);
ord.as_float_mut().abs_mut();
assert_eq!(ord.as_float().to_f64(), 1.5);

Trait Implementations

impl AsMut<Float> for OrdFloat

fn as_mut(&mut self) -> &mut Float

Converts this type into a mutable reference of the (usually inferred) input type.

impl AsRef<Float> for OrdFloat

fn as_ref(&self) -> &Float

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<OrdFloat> for Float

fn as_ref(&self) -> &OrdFloat

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for OrdFloat

fn clone(&self) -> OrdFloat

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OrdFloat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OrdFloat

fn deserialize<D: Deserializer<'de>>(
    deserializer: D
) -> Result<OrdFloat, D::Error>

Deserialize this value from the given Serde deserializer.

impl From<Float> for OrdFloat

fn from(src: Float) -> Self

Converts to this type from the input type.

impl From<OrdFloat> for Float

fn from(src: OrdFloat) -> Self

Converts to this type from the input type.

impl Hash for OrdFloat

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for OrdFloat

fn cmp(&self, other: &OrdFloat) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<OrdFloat> for OrdFloat

fn eq(&self, other: &OrdFloat) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<OrdFloat> for OrdFloat

fn partial_cmp(&self, other: &OrdFloat) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for OrdFloat

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>where
    S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for OrdFloat