Enum rug::float::Special

pub enum Special {
    Zero,
    NegZero,
    Infinity,
    NegInfinity,
    Nan,
    // some variants omitted
}

Special floating-point values.

Examples

use rug::Float;
use rug::float::Special;

let zero = Float::with_val(53, Special::Zero);
let neg_zero = Float::with_val(53, Special::NegZero);
let infinity = Float::with_val(53, Special::Infinity);
let neg_infinity = Float::with_val(53, Special::NegInfinity);
let nan = Float::with_val(53, Special::Nan);

assert_eq!(zero, 0);
assert!(zero.is_sign_positive());
assert_eq!(neg_zero, 0);
assert!(neg_zero.is_sign_negative());
assert!(infinity.is_infinite());
assert!(infinity.is_sign_positive());
assert!(neg_infinity.is_infinite());
assert!(neg_infinity.is_sign_negative());
assert!(nan.is_nan());

Variants

Zero

Positive zero.

NegZero

Negative zero.

Infinity

Positive infinity.

NegInfinity

Negative infinity.

Nan

Not a number.

Trait Implementations

impl PartialEq<Special> for Float

fn eq(&self, other: &Special) -> 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 !=.

impl PartialEq<Float> for Special

fn eq(&self, other: &Float) -> 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 !=.

impl PartialOrd<Float> for Special

fn partial_cmp(&self, other: &Float) -> 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 PartialOrd<Special> for Float

fn partial_cmp(&self, other: &Special) -> 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 AssignRound<Special> for Float

type Round = Round

The rounding method.

type Ordering = Ordering

The direction from rounding.

fn assign_round(&mut self, src: Special, _round: Round) -> Ordering

Peforms the assignment.

impl<'a> AssignRound<&'a Special> for Float

type Round = <Float as AssignRound<Special>>::Round

The rounding method.

type Ordering = <Float as AssignRound<Special>>::Ordering

The direction from rounding.

fn assign_round(&mut self, src: &Special, round: Self::Round) -> Self::Ordering

Peforms the assignment.

impl Clone for Special

fn clone(&self) -> Special

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for Special

impl Debug for Special

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for Special

impl Hash for Special

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl Ord for Special

fn cmp(&self, __arg_0: &Special) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl PartialEq for Special

fn eq(&self, __arg_0: &Special) -> 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 !=.

impl PartialOrd for Special

fn partial_cmp(&self, __arg_0: &Special) -> 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.