Enum BuiltinConst 

pub enum BuiltinConst {
    Pi,
    E,
    Tau,
    Sqrt2,
    Ln2,
    Ln10,
}

Built-in constants with closed semantic meaning.

Variants

Pi

E

Tau

Sqrt2

Ln2

Ln10

Implementations

impl BuiltinConst

pub const ALL: &'static [Self]

Every variant, for cross-table consistency tests.

pub fn parse(name: &str) -> Option<Self>

Parse a source name into the typed variant — the only place these strings cross into the typed core.

pub const fn as_str(self) -> &'static str

Canonical source spelling.

impl BuiltinConst

pub const fn value(self) -> f64

Numeric value of the constant. Must agree with crate::registry::builtins::builtin_constants (enforced by test).

Trait Implementations

impl Clone for BuiltinConst

fn clone(&self) -> BuiltinConst

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BuiltinConst

impl Debug for BuiltinConst

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

Formats the value using the given formatter.

impl Eq for BuiltinConst

impl Hash for BuiltinConst

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 BuiltinConst

fn eq(&self, other: &BuiltinConst) -> 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 StructuralPartialEq for BuiltinConst