Struct tfm::Number

pub struct Number(pub i32);

Fixed-width numeric type used in TFM files.

This numeric type has 11 bits for the integer part, 20 bits for the fractional part, and a single signed bit. The inner value is the number multiplied by 2^20. It is called a fix_word in TFtoPL.

In property list files, this type is represented as a decimal number with up to 6 digits after the decimal point. This is a non-lossy representation because 10^(-6) is larger than 2^(-20).

Tuple Fields

0: i32

Implementations

impl Number

pub const ZERO: Number = _

Representation of the number 0 as a Number.

pub const UNITY: Number = _

Representation of the number 1 as a Number.

pub fn is_abs_less_than_16(&self) -> bool

Returns true if the number is less than 16.0 in magnitude according to Knuth.

The number +16.0 is not allowed. This is covered in the E2E tests. See check_fix in TFtoPL.2014.60.

Trait Implementations

impl Add<Number> for Number

type Output = Number

The resulting type after applying the + operator.

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

Performs the + operation.

impl<'arbitrary> Arbitrary<'arbitrary> for Number

fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl Clone for Number

fn clone(&self) -> Number

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Number

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

Formats the value using the given formatter.

impl Default for Number

fn default() -> Number

Returns the “default value” for a type.

impl Display for Number

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

Formats the value using the given formatter.

impl Div<i32> for Number

type Output = Number

The resulting type after applying the / operator.

fn div(self, rhs: i32) -> Self::Output

Performs the / operation.

impl From<Number> for DesignSize

fn from(value: Number) -> Self

Converts to this type from the input type.

impl Hash for Number

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<i32> for Number

type Output = Number

The resulting type after applying the * operator.

fn mul(self, rhs: i32) -> Self::Output

Performs the * operation.

impl Ord for Number

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<Number> for Number

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<Number> for Number

fn partial_cmp(&self, other: &Number) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub<Number> for Number

type Output = Number

The resulting type after applying the - operator.

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

Performs the - operation.

impl Copy for Number

impl Eq for Number

impl StructuralEq for Number

impl StructuralPartialEq for Number