Enum Sign 

pub enum Sign {
    Clear,
    Of,
}

Where the sign of the answer to one of the sign builtins comes from.

Neither of these is a computation on the value. fabs of a NaN is that NaN with its sign bit clear, payload and all, and copysign of one is that NaN with the other value’s sign bit, so what both do is described entirely in terms of the bits.

Variants

Clear

fabs(x), whose sign is always clear.

Of

copysign(x, y), whose sign is the sign of the second operand.

Implementations

impl Sign

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

How the operation is written in the typed tree’s textual form.

pub const fn is_pair(self) -> bool

Whether it reads a sign from a second operand.

Trait Implementations

impl Clone for Sign

fn clone(&self) -> Sign

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Sign

impl Debug for Sign

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

Formats the value using the given formatter.

impl Eq for Sign

impl PartialEq for Sign

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Sign