Struct Decimal

pub struct Decimal {
    pub inner: BigDecimal,
}

Mybatis Decimal

Fields

inner: BigDecimal

Implementations

impl Decimal

pub fn from(s: &str) -> Decimal

pub fn from_str(arg: &str) -> Result<Decimal, Error>

create from str

Methods from Deref<Target = BigDecimal>

pub fn with_scale(&self, new_scale: i64) -> BigDecimal

Return a new BigDecimal object equivalent to self, with internal scaling set to the number specified. If the new_scale is lower than the current value (indicating a larger power of 10), digits will be dropped (as precision is lower)

pub fn with_prec(&self, prec: u64) -> BigDecimal

Return a new BigDecimal object with precision set to new value

pub fn sign(&self) -> Sign

Return the sign of the BigDecimal as num::bigint::Sign.

Examples

extern crate num_bigint;
extern crate bigdecimal;
use std::str::FromStr;

assert_eq!(bigdecimal::BigDecimal::from_str("-1").unwrap().sign(), num_bigint::Sign::Minus);
assert_eq!(bigdecimal::BigDecimal::from_str("0").unwrap().sign(), num_bigint::Sign::NoSign);
assert_eq!(bigdecimal::BigDecimal::from_str("1").unwrap().sign(), num_bigint::Sign::Plus);

pub fn as_bigint_and_exponent(&self) -> (BigInt, i64)

Return the internal big integer value and an exponent. Note that a positive exponent indicates a negative power of 10.

Examples

extern crate num_bigint;
extern crate bigdecimal;
use std::str::FromStr;

assert_eq!(bigdecimal::BigDecimal::from_str("1.1").unwrap().as_bigint_and_exponent(),
           (num_bigint::BigInt::from_str("11").unwrap(), 1));

pub fn digits(&self) -> u64

Number of digits in the non-scaled integer representation

pub fn abs(&self) -> BigDecimal

Compute the absolute value of number

pub fn double(&self) -> BigDecimal

pub fn half(&self) -> BigDecimal

Divide this efficiently by 2

Note, if this is odd, the precision will increase by 1, regardless of the context’s limit.

pub fn square(&self) -> BigDecimal

pub fn cube(&self) -> BigDecimal

pub fn sqrt(&self) -> Option<BigDecimal>

Take the square root of the number

If the value is < 0, None is returned

pub fn cbrt(&self) -> BigDecimal

Take the cube root of the number

pub fn inverse(&self) -> BigDecimal

Compute the reciprical of the number: x^-1

pub fn round(&self, round_digits: i64) -> BigDecimal

Return number rounded to round_digits precision after the decimal point

pub fn is_integer(&self) -> bool

Return true if this number has zero fractional part (is equal to an integer)

pub fn exp(&self) -> BigDecimal

Evaluate the natural-exponential function e^x

pub fn normalized(&self) -> BigDecimal

Trait Implementations

impl Clone for Decimal

fn clone(&self) -> Decimal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Decimal

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

Formats the value using the given formatter.

impl Deref for Decimal

type Target = BigDecimal

The resulting type after dereferencing.

fn deref(&self) -> &<Decimal as Deref>::Target

Dereferences the value.

impl DerefMut for Decimal

fn deref_mut(&mut self) -> &mut <Decimal as Deref>::Target

Mutably dereferences the value.

impl<'de> Deserialize<'de> for Decimal

Decimal allow deserialize by an String or Binary

fn deserialize<D>( deserializer: D, ) -> Result<Decimal, <D as Deserializer<'de>>::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Decimal

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

Formats the value using the given formatter.

impl From<&BigDecimal> for Decimal

fn from(arg: &BigDecimal) -> Decimal

Converts to this type from the input type.

impl From<BigDecimal> for Decimal

fn from(arg: BigDecimal) -> Decimal

Converts to this type from the input type.

impl Hash for Decimal

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 Ord for Decimal

fn cmp(&self, other: &Decimal) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Decimal

fn eq(&self, other: &Decimal) -> 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 PartialOrd for Decimal

fn partial_cmp(&self, other: &Decimal) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Decimal

fn serialize<S>( &self, serializer: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Decimal

impl StructuralPartialEq for Decimal