Struct Real 

pub struct Real {
    pub negative: bool,
    pub digits: [u8; 12],
    pub exponent: i32,
}

A real number exactly as the calculator stores it: sign, 12 decimal digits with the point after the first, exponent -499..=499.

Fields

negative: bool

Negative.

digits: [u8; 12]

Mantissa digits, most significant first; the first is nonzero unless the number is 0.

exponent: i32

Decimal exponent.

Implementations

impl Real

pub const ZERO: Real

Zero.

pub fn from_body(body: &[u8]) -> Result<Real>

Decode a 16-nibble real body: 3-nibble tens-complement exponent, 12 mantissa digits from the least significant up, sign (0 or 9).

pub fn to_body(&self) -> [u8; 16]

The 16-nibble body.

pub fn to_f64(&self) -> f64

The nearest f64 (exact to 12 digits within F64_EXPONENTS).

pub fn to_source(&self) -> String

RPL source that compiles to exactly this real: 5., -1.5E-300, 4.79425538604E-1.

pub fn parse(text: &str) -> Result<Real>

Parse decimal text (0.5, -1.5E-300, 12, .479425538604), rounding to 12 significant digits (half away from zero).

pub fn from_f64(v: f64) -> Result<Real>

The real nearest to v, rounded to 12 digits.

Trait Implementations

impl Clone for Real

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Real

impl Debug for Real

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Real

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Real, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Real

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

Formats the value using the given formatter.

impl Eq for Real

impl PartialEq for Real

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Real

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Real