Struct Numeric 

pub struct Numeric(/* private fields */);

A rational number with 64-bit numerator and denominator.

Used for precise financial calculations without floating-point rounding errors.

Examples

use gnucash_sys::Numeric;

// Create $100.00 (10000 cents / 100)
let amount = Numeric::new(10000, 100);
assert_eq!(amount.to_f64(), 100.0);

// Create from integer
let whole: Numeric = 42i64.into();
assert_eq!(whole.num(), 42);
assert_eq!(whole.denom(), 1);

// Negate a value
let neg = -amount;
assert!(neg.is_negative());

Implementations

impl Numeric

pub fn new(num: i64, denom: i64) -> Self

Creates a new Numeric from numerator and denominator.

pub fn zero() -> Self

Returns zero (0/1).

pub fn num(&self) -> i64

Returns the numerator.

pub fn denom(&self) -> i64

Returns the denominator.

pub fn is_zero(&self) -> bool

Checks if this value represents zero.

pub fn is_negative(&self) -> bool

Checks if this value is negative.

pub fn is_positive(&self) -> bool

Checks if this value is positive.

pub fn to_f64(&self) -> f64

Converts to f64.

pub fn neg(&self) -> Self

Returns the negation of this value.

pub fn abs(&self) -> Self

Returns the absolute value.

Trait Implementations

impl Clone for Numeric

fn clone(&self) -> Numeric

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Numeric

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

Formats the value using the given formatter.

impl Default for Numeric

fn default() -> Self

Returns the “default value” for a type.

impl Display for Numeric

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

Formats the value using the given formatter.

impl From<Numeric> for gnc_numeric

fn from(n: Numeric) -> Self

Converts to this type from the input type.

impl From<_gnc_numeric> for Numeric

fn from(n: gnc_numeric) -> Self

Converts to this type from the input type.

impl From<i64> for Numeric

fn from(n: i64) -> Self

Converts to this type from the input type.

impl Hash for Numeric

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 Neg for Numeric

type Output = Numeric

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl PartialEq for Numeric

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

impl Eq for Numeric

impl StructuralPartialEq for Numeric