Struct DecFloat128 

pub struct DecFloat128(pub Bitstring128);

Available on crate feature decstr only.

A 128-bit ieee-754 quadruple-precision decimal floating-point (w) number, from the set $\R$, also known as Df128.

The range of valid numeric values is $\lbrack$MIN $\dots$ MAX$\rbrack$.

Supports 34 decimal digits of significand and a normalized exponent range of −6176 to +6111.

It doesn’t implement any arithmetic operations and is mainly intended for storage and interchange.

Tuple Fields

0: Bitstring128

Implementations

impl DecFloat128

Constructors

pub const fn new(value: Bitstring128) -> Self

Returns a new DecFloat128.

Trait Implementations

impl Bound for DecFloat128

fn is_lower_bounded(&self) -> bool

Returns true if the number is lower bounded.

fn is_upper_bounded(&self) -> bool

Returns true if the number is upper bounded.

fn lower_bound(&self) -> Option<Self>

Returns the lower bound, if any.

fn upper_bound(&self) -> Option<Self>

Returns the upper bound, if any.

impl Clone for DecFloat128

fn clone(&self) -> DecFloat128

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ConstLowerBounded for DecFloat128

const MIN: Self

The smallest value that can be represented with this type.

impl ConstNegOne for DecFloat128

const NEG_ONE: Self

The additive inverse of the multiplicative identity, -1.

impl ConstOne for DecFloat128

const ONE: Self

The multiplicative identity, 1.

impl ConstUpperBounded for DecFloat128

const MAX: Self

The largest value that can be represented with this type.

impl ConstZero for DecFloat128

const ZERO: Self

The additive identity, 0.

impl Count for DecFloat128

fn is_countable(&self) -> bool

Returns true if the number is countable.

fn is_uncountable(&self) -> bool

Returns false if the number is countable.

impl Debug for DecFloat128

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

Formats the value using the given formatter.

impl Default for DecFloat128

fn default() -> Self

Returns the “default value” for a type.

impl Display for DecFloat128

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

Formats the value using the given formatter.

impl Ident for DecFloat128

fn can_zero(&self) -> bool

Returns true if the number can represent 0, the additive identity.

fn can_one(&self) -> bool

Returns true if the number can represent 1, the multiplicative identity.

fn can_neg_one(&self) -> bool

Returns true if the number can represent -1, the additive inverse of the multiplicative identity.

fn is_zero(&self) -> bool

Returns true if the current value is 0. the additive identity.

fn is_one(&self) -> bool

Returns true if the current value is 1, the multiplicative identity.

fn is_neg_one(&self) -> bool

Returns true if the current value is -1, the additive inverse of the multiplicative identity.

impl LowerBounded for DecFloat128

fn new_min() -> Self

The smallest value that can be represented with this type.

impl NegOne for DecFloat128

fn new_neg_one() -> Self

Returns a new additive inverse of the multiplicative identity, -1.

fn set_neg_one(&mut self)

where Self: Sized,

Sets this number to -1.

impl Number for DecFloat128

fn from_inner_repr(value: Self::InnerRepr) -> NumeraResult<Self>

Returns a new DecFloat128 from the inner representation.

Errors

This function can’t fail.

unsafe fn from_inner_repr_unchecked(value: Self::InnerRepr) -> Self

Available on crate feature not(safe) only.

Returns a new DecFloat128 from the inner representation`.

Safety

This function is safe.

fn from_innermost_repr(value: Self::InnermostRepr) -> NumeraResult<Self>

Returns a new DecFloat128 from the innermost representation.

Errors

This function can’t fail.

unsafe fn from_innermost_repr_unchecked(value: Self::InnermostRepr) -> Self

Available on crate feature not(safe) only.

Returns a new DecFloat128 from the innermost representation.

Safety

This function is safe.

type InnerRepr = Bitstring128

The inner primitive representation of the number.

type InnermostRepr = Bitstring128

The innermost primitive representation of the number.

fn into_inner_repr(self) -> Self::InnerRepr

Deconstructs the number to its inner representation.

fn into_innermost_repr(self) -> Self::InnermostRepr

Deconstructs the number to its innermost representation.

fn try_from_inner_repr(inner: impl Into<Self::InnerRepr>) -> NumeraResult<Self>

where Self: Sized,

Forms a new number from its converted given inner representation.

impl One for DecFloat128

fn new_one() -> Self

Returns a new multiplicative identity, 1.

fn set_one(&mut self)

where Self: Sized,

Sets this number to 1.

impl PartialEq for DecFloat128

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for DecFloat128

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Sign for DecFloat128

fn can_negative(&self) -> bool

Returns true if the type can represent negative numbers.

fn can_positive(&self) -> bool

Returns true if the type can represent positive numbers.

fn is_negative(&self) -> bool

Returns true if the value is negative (< 0).

fn is_positive(&self) -> bool

Returns true if the value is positive (> 0).

impl UpperBounded for DecFloat128

fn new_max() -> Self

The largest value that can be represented with this type.

impl Zero for DecFloat128

fn new_zero() -> Self

Returns a new additive identity, 0.

fn set_zero(&mut self)

where Self: Sized,

Sets this number to 0.

impl Copy for DecFloat128

impl Negative for DecFloat128

impl Positive for DecFloat128

impl Uncountable for DecFloat128