Enum RoundingStrategy

pub enum RoundingStrategy {
    MidpointNearestEven,
    MidpointAwayFromZero,
    MidpointTowardZero,
    ToZero,
    AwayFromZero,
    ToNegativeInfinity,
    ToPositiveInfinity,
    BankersRounding,
    RoundHalfUp,
    RoundHalfDown,
    RoundDown,
    RoundUp,
}

RoundingStrategy represents the different rounding strategies that can be used by round_dp_with_strategy.

Variants

MidpointNearestEven

When a number is halfway between two others, it is rounded toward the nearest even number. Also known as “Bankers Rounding”. e.g. 6.5 -> 6, 7.5 -> 8

MidpointAwayFromZero

When a number is halfway between two others, it is rounded toward the nearest number that is away from zero. e.g. 6.4 -> 6, 6.5 -> 7, -6.5 -> -7

MidpointTowardZero

When a number is halfway between two others, it is rounded toward the nearest number that is toward zero. e.g. 6.4 -> 6, 6.5 -> 6, -6.5 -> -6

ToZero

The number is always rounded toward zero. e.g. -6.8 -> -6, 6.8 -> 6

AwayFromZero

The number is always rounded away from zero. e.g. -6.8 -> -7, 6.8 -> 7

ToNegativeInfinity

The number is always rounded towards negative infinity. e.g. 6.8 -> 6, -6.8 -> -7

ToPositiveInfinity

The number is always rounded towards positive infinity. e.g. 6.8 -> 7, -6.8 -> -6

BankersRounding

👎Deprecated since 1.11.0: Please use RoundingStrategy::MidpointNearestEven instead

When a number is halfway between two others, it is rounded toward the nearest even number. e.g. 6.5 -> 6, 7.5 -> 8

RoundHalfUp

👎Deprecated since 1.11.0: Please use RoundingStrategy::MidpointAwayFromZero instead

Rounds up if the value >= 5, otherwise rounds down, e.g. 6.5 -> 7

RoundHalfDown

👎Deprecated since 1.11.0: Please use RoundingStrategy::MidpointTowardZero instead

Rounds down if the value =< 5, otherwise rounds up, e.g. 6.5 -> 6, 6.51 -> 7 1.4999999 -> 1

RoundDown

👎Deprecated since 1.11.0: Please use RoundingStrategy::ToZero instead

Always round down.

RoundUp

👎Deprecated since 1.11.0: Please use RoundingStrategy::AwayFromZero instead

Always round up.

Trait Implementations

impl Clone for RoundingStrategy

fn clone(&self) -> RoundingStrategy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RoundingStrategy

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

Formats the value using the given formatter.

impl PartialEq for RoundingStrategy

fn eq(&self, other: &RoundingStrategy) -> 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 RoundingStrategy

impl Eq for RoundingStrategy

impl StructuralPartialEq for RoundingStrategy