Struct BigFloat 

pub struct BigFloat {
    pub inner: Float,
    pub prec: u32,
}

Arbitrary-precision floating-point atom. prec (precision in bits) is part of structural identity: Float(1.0, 53) != Float(1.0, 64).

Fields

inner: Float

prec: u32

Trait Implementations

impl Clone for BigFloat

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BigFloat

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

Formats the value using the given formatter.

impl Display for BigFloat

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

rug’s own rendering, made to read back as a float.

rug prints a zero as 0, which every parser in this crate reads as the integer 0 — a different node, and a different kind of number. A finite value whose rendering has neither a point nor an exponent is therefore given a .0. The digit count is rug’s, which grows with prec, so the parsers can recover the precision from it (see crate::parse::float_literal_prec).

impl Eq for BigFloat

impl Hash for BigFloat

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

Hashes exactly what PartialEq compares: the prec field and the value of inner. In particular, matching eq:

• every NaN hashes alike (eq treats any two NaNs as equal);
• +0 and -0 hash alike (rug’s == says they are equal);
• inner’s own MPFR precision is not hashed — eq compares values, so 1.0 held at 53 and at 64 mantissa bits must collide. MPFR stores the significand left-aligned with the unused low bits zero, so equal values differ only by extra all-zero low limbs, which are skipped.

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 PartialEq for BigFloat

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

Equality operator ==.

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

Inequality operator !=.