Struct sqlx::types::BigDecimal[−]

pub struct BigDecimal { /* fields omitted */ }

Expand description

A big decimal type.

Implementations

`impl BigDecimal`

`pub fn new(digits: BigInt, scale: i64) -> BigDecimal`

Creates and initializes a BigDecimal.

`pub fn parse_bytes(buf: &[u8], radix: u32) -> Option<BigDecimal>`

Creates and initializes a BigDecimal.

Decodes using str::from_utf8 and forwards to BigDecimal::from_str_radix. Only base-10 is supported.

Examples

use bigdecimal::{BigDecimal, Zero};

assert_eq!(BigDecimal::parse_bytes(b"0", 10).unwrap(), BigDecimal::zero());
assert_eq!(BigDecimal::parse_bytes(b"13", 10).unwrap(), BigDecimal::from(13));

`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 into_bigint_and_exponent(self) -> (BigInt, i64)`

Convert into 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().into_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

`#[must_use] pub fn normalized(&self) -> BigDecimal`

Trait Implementations

`impl<'a> Add<&'a BigDecimal> for BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: &'a BigDecimal) -> BigDecimal`

Performs the + operation. Read more

`impl<'a> Add<&'a BigInt> for BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: &BigInt) -> BigDecimal`

Performs the + operation. Read more

`impl<'a, 'b> Add<&'a BigInt> for &'b BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: &BigInt) -> BigDecimal`

Performs the + operation. Read more

`impl<'a, 'b> Add<&'b BigDecimal> for &'a BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: &BigDecimal) -> BigDecimal`

Performs the + operation. Read more

`impl Add<BigDecimal> for BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: BigDecimal) -> BigDecimal`

Performs the + operation. Read more

`impl<'a> Add<BigDecimal> for &'a BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: BigDecimal) -> BigDecimal`

Performs the + operation. Read more

`impl<'a> Add<BigInt> for &'a BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: BigInt) -> BigDecimal`

Performs the + operation. Read more

`impl Add<BigInt> for BigDecimal`

`type Output = BigDecimal`

The resulting type after applying the + operator.

`pub fn add(self, rhs: BigInt) -> BigDecimal`

Performs the + operation. Read more

`impl<'a> AddAssign<&'a BigDecimal> for BigDecimal`

`pub fn add_assign(&mut self, rhs: &BigDecimal)`

Performs the += operation. Read more

`impl<'a> AddAssign<&'a BigInt> for BigDecimal`

`pub fn add_assign(&mut self, rhs: &BigInt)`

Performs the += operation. Read more

`impl AddAssign<BigDecimal> for BigDecimal`

`pub fn add_assign(&mut self, other: BigDecimal)`

Performs the += operation. Read more

`impl<'a> AddAssign<BigInt> for BigDecimal`

`pub fn add_assign(&mut self, rhs: BigInt)`

Performs the += operation. Read more

`impl Clone for BigDecimal`

`pub fn clone(&self) -> BigDecimal`

Returns a copy of the value. Read more

`fn clone_from(&mut self, source: &Self)`1.0.0 [src]

Performs copy-assignment from source. Read more

`impl Debug for BigDecimal`

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

Formats the value using the given formatter. Read more

`impl<'_> Decode<'_, MySql> for BigDecimal`[src]

`pub fn decode( value: MySqlValueRef<'_> ) -> Result<BigDecimal, Box<dyn Error + 'static + Sync + Send, Global>>`[src]

Decode a new value of this type using a raw value from the database.

`impl<'_> Decode<'_, Postgres> for BigDecimal`[src]

`pub fn decode( value: PgValueRef<'_> ) -> Result<BigDecimal, Box<dyn Error + 'static + Sync + Send, Global>>`[src]

Decode a new value of this type using a raw value from the database.

`impl Default for BigDecimal`

`pub fn default() -> BigDecimal`

Returns the “default value” for a type. Read more

`impl Display for BigDecimal`

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

Formats the value using the given formatter. Read more