Enum dec::Rounding

pub enum Rounding {
    Ceiling,
    Down,
    Floor,
    HalfDown,
    HalfEven,
    HalfUp,
    Up,
    ZeroFiveUp,
}

Algorithms for rounding decimal numbers.

The rounding modes are precisely defined in The Arithmetic Model chapter of the General Decimal Arithmetic specification.

Variants

Ceiling

Round towards positive infinity.

Down

Round towards zero (truncation).

Floor

Round towards negative infinity.

HalfDown

Round to nearest; if equidistant, round down.

HalfEven

Round to nearest; if equidistant, round so that the final digit is even.

HalfUp

Round to nearest; if equidistant, round up.

Up

Round away from zero.

ZeroFiveUp

The same as Rounding::Up, except that rounding up only occurs if the digit to be rounded up is 0 or 5.

After overflow the result is the same as for Rounding::Down.

Trait Implementations

impl Clone for Rounding

fn clone(&self) -> Rounding

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Rounding

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

Formats the value using the given formatter.

impl Default for Rounding

fn default() -> Rounding

Returns the “default value” for a type.

impl Hash for Rounding

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 Rounding

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

impl Eq for Rounding

impl StructuralPartialEq for Rounding