Enum Format 

pub enum Format {
    Half,
    BFloat16,
    Single,
    Double,
    X87Extended,
    Quad,
}

A binary floating point format.

Variants

Half

IEEE binary16, which C spells _Float16.

BFloat16

The brain float, an IEEE binary32 with the low sixteen bits of its significand cut off, which C spells __bf16. It has the range of a float and less than half its precision.

Single

IEEE binary32, which C spells float.

Double

IEEE binary64, which C spells double.

X87Extended

The x87 eighty bit format, which is long double on x86. It is the one format here that stores the leading significand bit rather than leaving it implied.

Quad

IEEE binary128, which C spells _Float128, and which is long double on AArch64 Linux and on RISC-V.

Implementations

impl Format

pub const fn precision(self) -> u32

The number of significand bits, counting the leading one whether it is stored or not.

pub const fn max_exponent(self) -> i32

The exponent of the largest finite number, which is also the exponent bias.

pub const fn min_exponent(self) -> i32

The exponent of the smallest normal number.

pub const fn width(self) -> u32

The width of the encoding in bits, which for x87 is the eighty bits that matter and not the ninety six or hundred and twenty eight an ABI pads them out to.

pub const fn has_explicit_integer_bit(self) -> bool

Whether the leading significand bit is stored rather than implied.

Trait Implementations

impl Clone for Format

fn clone(&self) -> Format

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Format

impl Debug for Format

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

Formats the value using the given formatter.

impl Eq for Format

impl Hash for Format

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 PartialEq for Format

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Format