Enum Num 

pub enum Num {
    Int(isize),
    BigInt(Rc<BigInt>),
    Float(f64),
    Dec(Rc<String>),
}

Integer / decimal number.

The speciality of this type is that numbers are distinguished into integers and 64-bit floating-point numbers. This allows using integers to index arrays, while using floating-point numbers to do general math.

Operations on numbers follow a few principles:

• The sum, difference, product, and remainder of two integers is integer.
• Any other operation between two numbers yields a float.

Variants

Int(isize)

Machine-size integer

BigInt(Rc<BigInt>)

Arbitrarily large integer

Float(f64)

Floating-point number

Dec(Rc<String>)

Decimal number

Implementations

impl Num

pub fn big_int(i: BigInt) -> Self

Create a big integer.

pub fn from_integral<T: Copy + TryInto<isize> + Into<BigInt>>(x: T) -> Self

Convert from an integral type to a machine-sized or big integer.

pub fn from_str_radix(i: &str, radix: u32) -> Option<Self>

Try to parse an integer from a string with given radix.

pub fn from_dec_str(n: &str) -> Self

Try to parse a decimal string to a Self::Float, else return NaN.

pub fn as_isize(&self) -> Option<isize>

If the value is a machine-sized integer, return it, else fail.

Trait Implementations

impl Add for Num

type Output = Num

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation.

impl Clone for Num

fn clone(&self) -> Num

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Num

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

Formats the value using the given formatter.

impl Display for Num

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

Formats the value using the given formatter.

impl Div for Num

type Output = Num

The resulting type after applying the / operator.

fn div(self, rhs: Self) -> Self::Output

Performs the / operation.

impl Hash for Num

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 Mul for Num

type Output = Num

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self::Output

Performs the * operation.

impl Neg for Num

type Output = Num

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl Ord for Num

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Num

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 Num

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 Rem for Num

type Output = Num

The resulting type after applying the % operator.

fn rem(self, rhs: Self) -> Self::Output

Performs the % operation.

impl Sub for Num

type Output = Num

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation.

impl Eq for Num