#[repr(transparent)]
pub struct OrdFloat { /* fields omitted */ }
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.
use rug::float::{OrdFloat, Special};
use rug::Float;
use std::cmp::Ordering;
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);
Extracts the underlying Float
.
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);
Extracts the underlying Float
.
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);
Performs copy-assignment from source
. Read more
Formats the value using the given formatter. Read more
Feeds this value into the given [Hasher
]. Read more
Feeds a slice of this type into the given [Hasher
]. Read more
This method returns an Ordering
between self
and other
. Read more
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
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
Serialize this value into the given Serde serializer. Read more
Deserialize this value from the given Serde deserializer. Read more