Enum switchboard_utils::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<(), Error>

Formats the value using the given formatter.

impl PartialEq for RoundingStrategy

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

This method tests for self and other values to be equal, and is used by ==.

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

This method 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 StructuralEq for RoundingStrategy

impl StructuralPartialEq for RoundingStrategy