Struct Float

pub struct Float {
    pub format: Format,
    pub bits: BitPattern,
}

A floating point number, also contains the format information.

Fields

format: Format

bits: BitPattern

Implementations

impl Float

pub fn from_str(format: Format, s: &str) -> Result<Self, Error>

Create from the given format and string.

Arguments

• format - The format of the number.
• str - The number in decimal form.

pub fn from_bits(format: Format, bits: BitPattern) -> Result<Float, Error>

Create from the given format and bit pattern.

Arguments

• format - The format of the float.
• bits - The bit pattern of the float.

pub fn from_comps(format: Format, comps: Components) -> Result<Float, Error>

Create from the given format and components.

Arguments

• format - The format of the float.
• comps - The components of the float.

pub fn from_fields( format: Format, sign: Option<bool>, exp: &str, mant: &str, ) -> Result<Float, Error>

Create from the given field bit patterns. The radix of exp and mant is deduced from the first 2 chars. ‘0b’ => binary, ‘0x’ => hexadecimal, ‘0o’ => octal.

Arguments

• format - The format of the float.
• sign - Whether the number is signed and the sign.
• exp - The exponent bit pattern of the number.
• mant - The mantissa bit pattern of the number.
• excess - The excess value of the number.

pub fn get_start_indices(&self) -> (usize, usize)

Get the start indices of exponent and mantissa. 0th element is the start index of exponent, 1st element is the start index of mantissa.

pub fn to_comps(&self) -> Components

Decompose into components.

pub fn to_f32(&self) -> f32

Create a f32 from the given Float. The result may has a lost of information.

pub fn to_f64(&self) -> f64

Create a f64 from the given Float. The result may has a lost of information.

pub fn to_f32_raw(&self) -> f32

Create a f32 from the given Float. Raw transmutation from the bit pattern.

pub fn to_f64_raw(&self) -> f64

Create a f64 from the given Float. Raw transmutation from the bit pattern.

Trait Implementations

impl Clone for Float

fn clone(&self) -> Float

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Float

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

Formats the value using the given formatter.

impl Display for Float

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

Formats the value using the given formatter.

impl From<f32> for Float

fn from(f: f32) -> Float

Create from the given f32, using IEEE binary32 format.

impl From<f64> for Float

fn from(f: f64) -> Float

Create from the given f64, using IEEE binary64 format. Only available for 64 bit systems.

impl PartialEq for Float

fn eq(&self, other: &Float) -> 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 Eq for Float

impl StructuralPartialEq for Float