Struct Context 

pub struct Context { /* private fields */ }

Decimal Context

The context represents the user-selectable parameters and rules which govern the results of arithmetic operations (for example, the rounding mode when rounding occurs).

Implementations

impl Context

pub const fn default() -> Self

Returns the Default Decimal Context.

pub const fn with_rounding_mode(self, rm: RoundingMode) -> Self

Apply the given RoundingMode to the Context.

pub const fn without_traps(self) -> Self

Apply no traps to given Context.

pub const fn with_signal_traps(self, traps: SignalsTraps) -> Self

Method applies specified SignalsTraps to the given context.

Examples

use fastnum::{*, decimal::*};

let ctx = Context::default().without_traps();

// No panic! We can divide by zero!
let res = dec256!(1.0).with_ctx(ctx) / dec256!(0).with_ctx(ctx);

assert!(res.is_infinite());
assert!(res.is_op_div_by_zero());
assert!(res.is_op_invalid());

pub const fn rounding_mode(&self) -> RoundingMode

Get RoundingMode of given Context.

pub const fn signal_traps(&self) -> SignalsTraps

Get SignalsTraps of given Context.

Trait Implementations

impl Clone for Context

fn clone(&self) -> Context

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Context

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

Formats the value using the given formatter.

impl Display for Context

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

Formats the value using the given formatter.

impl Hash for Context

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 Context

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

impl Eq for Context

impl StructuralPartialEq for Context