Enum Rounding 

pub enum Rounding {
    Floor,
    Ceil,
    Trunc,
    Expand,
}

The rounding direction of an inexact result.

Math.Rounding in Solidity, with the same four cases and the same discriminant order.

Variants

Floor

Toward negative infinity. For an unsigned value, the same as Trunc.

Ceil

Toward positive infinity. For an unsigned value, the same as Expand.

Trunc

Toward zero.

Expand

Away from zero.

Implementations

impl Rounding

pub const fn unsigned_rounds_up(self) -> bool

Whether this direction rounds an inexact unsigned result up.

Math.unsignedRoundsUp. Both signed directions collapse for a value that cannot be negative: rounding toward positive infinity and rounding away from zero are the same instruction.

pub const fn rounds_away_from_zero(self, negative: bool) -> bool

Whether this direction rounds an inexact result of the given sign away from zero.

The signed counterpart of unsigned_rounds_up: Floor grows a negative magnitude, Ceil a positive one.

Trait Implementations

impl Clone for Rounding

fn clone(&self) -> Rounding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Rounding

impl Debug for Rounding

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

Formats the value using the given formatter.

impl Default for Rounding

fn default() -> Rounding

Returns the “default value” for a type.

impl Eq for Rounding

impl Hash for Rounding

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 Rounding

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Rounding