Enum lexical::RoundingKind

#[repr(i32)]
pub enum RoundingKind {
    NearestTieEven,
    NearestTieAwayZero,
    TowardPositiveInfinity,
    TowardNegativeInfinity,
    TowardZero,
    // some variants omitted
}

Rounding type for float-parsing.

Defines the IEEE754 rounding scheme to be used during float parsing. In general, this should be set to NearestTieEven, the default recommended rounding scheme by IEEE754 for binary and decimal operations.

FFI

For interfacing with FFI-code, this may be approximated by:

const int32_t NEAREST_TIE_EVEN = 0;
const int32_t NEAREST_TIE_AWAY_ZERO = 1;
const int32_t TOWARD_POSITIVE_INFINITY = 2;
const int32_t TOWARD_NEGATIVE_INFINITY = 3;
const int32_t TOWARD_ZERO = 4;

Safety

Assigning any value outside the range [1-4] to value of type RoundingKind may invoke undefined-behavior.

Variants

NearestTieEven

Round to the nearest, tie to even.

NearestTieAwayZero

Round to the nearest, tie away from zero.

TowardPositiveInfinity

Round toward positive infinity.

TowardNegativeInfinity

Round toward negative infinity.

TowardZero

Round toward zero.

Trait Implementations

impl Copy for RoundingKind

impl PartialEq<RoundingKind> for RoundingKind

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

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

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Debug for RoundingKind

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

Formats the value using the given formatter.

impl Eq for RoundingKind

impl Clone for RoundingKind

fn clone(&self) -> RoundingKind

Returns a copy of the value.

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

Performs copy-assignment from source.