Struct rust_decimal::Decimal [−][src]
#[repr(C)]pub struct Decimal { /* fields omitted */ }
Expand description
Decimal
represents a 128 bit representation of a fixed-precision decimal number.
The finite set of values of type Decimal
are of the form m / 10e,
where m is an integer such that -296 < m < 296, and e is an integer
between 0 and 28 inclusive.
Implementations
impl Decimal
[src]
impl Decimal
[src]#[must_use]pub fn new(num: i64, scale: u32) -> Decimal
[src]
#[must_use]pub fn new(num: i64, scale: u32) -> Decimal
[src]Returns a Decimal
with a 64 bit m
representation and corresponding e
scale.
Arguments
num
- An i64 that represents them
portion of the decimal numberscale
- A u32 representing thee
portion of the decimal number.
Panics
This function panics if scale
is > 28.
Example
use rust_decimal::Decimal; let pi = Decimal::new(3141, 3); assert_eq!(pi.to_string(), "3.141");
#[must_use]pub fn from_i128_with_scale(num: i128, scale: u32) -> Decimal
[src]
#[must_use]pub fn from_i128_with_scale(num: i128, scale: u32) -> Decimal
[src]Creates a Decimal
using a 128 bit signed m
representation and corresponding e
scale.
Arguments
num
- An i128 that represents them
portion of the decimal numberscale
- A u32 representing thee
portion of the decimal number.
Panics
This function panics if scale
is > 28 or if num
exceeds the maximum supported 96 bits.
Example
use rust_decimal::Decimal; let pi = Decimal::from_i128_with_scale(3141i128, 3); assert_eq!(pi.to_string(), "3.141");
pub fn try_from_i128_with_scale(num: i128, scale: u32) -> Result<Decimal>
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pub fn try_from_i128_with_scale(num: i128, scale: u32) -> Result<Decimal>
[src]Checked version of from_i128_with_scale
. Will return Err
instead
of panicking at run-time.
Example
use rust_decimal::Decimal; let max = Decimal::try_from_i128_with_scale(i128::MAX, u32::MAX); assert!(max.is_err());
#[must_use]pub const fn from_parts(
lo: u32,
mid: u32,
hi: u32,
negative: bool,
scale: u32
) -> Decimal
[src]
#[must_use]pub const fn from_parts(
lo: u32,
mid: u32,
hi: u32,
negative: bool,
scale: u32
) -> Decimal
[src]Returns a Decimal
using the instances constituent parts.
Arguments
lo
- The low 32 bits of a 96-bit integer.mid
- The middle 32 bits of a 96-bit integer.hi
- The high 32 bits of a 96-bit integer.negative
-true
to indicate a negative number.scale
- A power of 10 ranging from 0 to 28.
Caution: Undefined behavior
While a scale greater than 28 can be passed in, it will be automatically capped by this function at the maximum precision. The library opts towards this functionality as opposed to a panic to ensure that the function can be treated as constant. This may lead to undefined behavior in downstream applications and should be treated with caution.
Example
use rust_decimal::Decimal; let pi = Decimal::from_parts(1102470952, 185874565, 1703060790, false, 28); assert_eq!(pi.to_string(), "3.1415926535897932384626433832");
pub fn from_scientific(value: &str) -> Result<Decimal, Error>
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pub fn from_scientific(value: &str) -> Result<Decimal, Error>
[src]Returns a Result
which if successful contains the Decimal
constitution of
the scientific notation provided by value
.
Arguments
value
- The scientific notation of theDecimal
.
Example
use rust_decimal::Decimal; let value = Decimal::from_scientific("9.7e-7").unwrap(); assert_eq!(value.to_string(), "0.00000097");
#[must_use]pub const fn scale(&self) -> u32
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#[must_use]pub const fn scale(&self) -> u32
[src]Returns the scale of the decimal number, otherwise known as e
.
Example
use rust_decimal::Decimal; let num = Decimal::new(1234, 3); assert_eq!(num.scale(), 3u32);
#[must_use]pub const fn mantissa(&self) -> i128
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#[must_use]pub const fn mantissa(&self) -> i128
[src]Returns the mantissa of the decimal number.
Example
use rust_decimal::prelude::*; let num = Decimal::from_str("-1.2345678").unwrap(); assert_eq!(num.mantissa(), -12345678i128); assert_eq!(num.scale(), 7);
#[must_use]pub const fn is_zero(&self) -> bool
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#[must_use]pub const fn is_zero(&self) -> bool
[src]Returns true if this Decimal number is equivalent to zero.
Example
use rust_decimal::prelude::*; let num = Decimal::ZERO; assert!(num.is_zero());
pub fn set_sign(&mut self, positive: bool)
[src]
👎 Deprecated since 1.4.0: please use set_sign_positive
instead
pub fn set_sign(&mut self, positive: bool)
[src]please use set_sign_positive
instead
pub fn set_sign_positive(&mut self, positive: bool)
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pub fn set_sign_positive(&mut self, positive: bool)
[src]pub fn set_sign_negative(&mut self, negative: bool)
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pub fn set_sign_negative(&mut self, negative: bool)
[src]pub fn rescale(&mut self, scale: u32)
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pub fn rescale(&mut self, scale: u32)
[src]Modifies the Decimal
to the given scale, attempting to do so without changing the
underlying number itself.
Note that setting the scale to something less then the current Decimal
s scale will
cause the newly created Decimal
to have some rounding.
Scales greater than the maximum precision supported by Decimal
will be automatically
rounded to Decimal::MAX_PRECISION
.
Rounding leverages the half up strategy.
Arguments
scale
: The scale to use for the newDecimal
number.
Example
use rust_decimal::Decimal; let mut number = Decimal::new(1_123, 3); number.rescale(6); assert_eq!(number, Decimal::new(1_123_000, 6)); let mut round = Decimal::new(145, 2); round.rescale(1); assert_eq!(round, Decimal::new(15, 1));
#[must_use]pub const fn serialize(&self) -> [u8; 16]
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#[must_use]pub const fn serialize(&self) -> [u8; 16]
[src]Returns a serialized version of the decimal number. The resulting byte array will have the following representation:
- Bytes 1-4: flags
- Bytes 5-8: lo portion of
m
- Bytes 9-12: mid portion of
m
- Bytes 13-16: high portion of
m
#[must_use]pub const fn deserialize(bytes: [u8; 16]) -> Decimal
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#[must_use]pub const fn deserialize(bytes: [u8; 16]) -> Decimal
[src]Deserializes the given bytes into a decimal number. The deserialized byte representation must be 16 bytes and adhere to the following convention:
- Bytes 1-4: flags
- Bytes 5-8: lo portion of
m
- Bytes 9-12: mid portion of
m
- Bytes 13-16: high portion of
m
#[must_use]pub fn is_negative(&self) -> bool
[src]
👎 Deprecated since 0.6.3: please use is_sign_negative
instead
#[must_use]pub fn is_negative(&self) -> bool
[src]please use is_sign_negative
instead
Returns true
if the decimal is negative.
#[must_use]pub fn is_positive(&self) -> bool
[src]
👎 Deprecated since 0.6.3: please use is_sign_positive
instead
#[must_use]pub fn is_positive(&self) -> bool
[src]please use is_sign_positive
instead
Returns true
if the decimal is positive.
pub const fn is_sign_negative(&self) -> bool
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pub const fn is_sign_negative(&self) -> bool
[src]Returns true
if the sign bit of the decimal is negative.
#[must_use]pub const fn is_sign_positive(&self) -> bool
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#[must_use]pub const fn is_sign_positive(&self) -> bool
[src]Returns true
if the sign bit of the decimal is positive.
#[must_use]pub const fn min_value() -> Decimal
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👎 Deprecated since 1.12.0: Use the associated constant Decimal::MIN
#[must_use]pub const fn min_value() -> Decimal
[src]Use the associated constant Decimal::MIN
Returns the minimum possible number that Decimal
can represent.
#[must_use]pub const fn max_value() -> Decimal
[src]
👎 Deprecated since 1.12.0: Use the associated constant Decimal::MAX
#[must_use]pub const fn max_value() -> Decimal
[src]Use the associated constant Decimal::MAX
Returns the maximum possible number that Decimal
can represent.
#[must_use]pub fn trunc(&self) -> Decimal
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#[must_use]pub fn trunc(&self) -> Decimal
[src]Returns a new Decimal
integral with no fractional portion.
This is a true truncation whereby no rounding is performed.
Example
use rust_decimal::Decimal; let pi = Decimal::new(3141, 3); let trunc = Decimal::new(3, 0); // note that it returns a decimal assert_eq!(pi.trunc(), trunc);
#[must_use]pub fn fract(&self) -> Decimal
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#[must_use]pub fn fract(&self) -> Decimal
[src]Returns a new Decimal
representing the fractional portion of the number.
Example
use rust_decimal::Decimal; let pi = Decimal::new(3141, 3); let fract = Decimal::new(141, 3); // note that it returns a decimal assert_eq!(pi.fract(), fract);
#[must_use]pub fn abs(&self) -> Decimal
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#[must_use]pub fn abs(&self) -> Decimal
[src]Computes the absolute value of self
.
Example
use rust_decimal::Decimal; let num = Decimal::new(-3141, 3); assert_eq!(num.abs().to_string(), "3.141");
#[must_use]pub fn floor(&self) -> Decimal
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#[must_use]pub fn floor(&self) -> Decimal
[src]Returns the largest integer less than or equal to a number.
Example
use rust_decimal::Decimal; let num = Decimal::new(3641, 3); assert_eq!(num.floor().to_string(), "3");
#[must_use]pub fn ceil(&self) -> Decimal
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#[must_use]pub fn ceil(&self) -> Decimal
[src]Returns the smallest integer greater than or equal to a number.
Example
use rust_decimal::Decimal; let num = Decimal::new(3141, 3); assert_eq!(num.ceil().to_string(), "4"); let num = Decimal::new(3, 0); assert_eq!(num.ceil().to_string(), "3");
#[must_use]pub fn max(self, other: Decimal) -> Decimal
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#[must_use]pub fn max(self, other: Decimal) -> Decimal
[src]Returns the maximum of the two numbers.
use rust_decimal::Decimal; let x = Decimal::new(1, 0); let y = Decimal::new(2, 0); assert_eq!(y, x.max(y));
#[must_use]pub fn min(self, other: Decimal) -> Decimal
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#[must_use]pub fn min(self, other: Decimal) -> Decimal
[src]Returns the minimum of the two numbers.
use rust_decimal::Decimal; let x = Decimal::new(1, 0); let y = Decimal::new(2, 0); assert_eq!(x, x.min(y));
#[must_use]pub fn normalize(&self) -> Decimal
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#[must_use]pub fn normalize(&self) -> Decimal
[src]Strips any trailing zero’s from a Decimal
and converts -0 to 0.
Example
use rust_decimal::prelude::*; let number = Decimal::from_str("3.100").unwrap(); assert_eq!(number.normalize().to_string(), "3.1");
pub fn normalize_assign(&mut self)
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pub fn normalize_assign(&mut self)
[src]An in place version of normalize
. Strips any trailing zero’s from a Decimal
and converts -0 to 0.
Example
use rust_decimal::prelude::*; let mut number = Decimal::from_str("3.100").unwrap(); assert_eq!(number.to_string(), "3.100"); number.normalize_assign(); assert_eq!(number.to_string(), "3.1");
#[must_use]pub fn round(&self) -> Decimal
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#[must_use]pub fn round(&self) -> Decimal
[src]Returns a new Decimal
number with no fractional portion (i.e. an integer).
Rounding currently follows “Bankers Rounding” rules. e.g. 6.5 -> 6, 7.5 -> 8
Example
use rust_decimal::Decimal; // Demonstrating bankers rounding... let number_down = Decimal::new(65, 1); let number_up = Decimal::new(75, 1); assert_eq!(number_down.round().to_string(), "6"); assert_eq!(number_up.round().to_string(), "8");
#[must_use]pub fn round_dp_with_strategy(
&self,
dp: u32,
strategy: RoundingStrategy
) -> Decimal
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#[must_use]pub fn round_dp_with_strategy(
&self,
dp: u32,
strategy: RoundingStrategy
) -> Decimal
[src]Returns a new Decimal
number with the specified number of decimal points for fractional
portion.
Rounding is performed using the provided RoundingStrategy
Arguments
dp
: the number of decimal points to round to.strategy
: theRoundingStrategy
to use.
Example
use rust_decimal::{Decimal, RoundingStrategy}; use core::str::FromStr; let tax = Decimal::from_str("3.4395").unwrap(); assert_eq!(tax.round_dp_with_strategy(2, RoundingStrategy::MidpointAwayFromZero).to_string(), "3.44");
#[must_use]pub fn round_dp(&self, dp: u32) -> Decimal
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#[must_use]pub fn round_dp(&self, dp: u32) -> Decimal
[src]Returns a new Decimal
number with the specified number of decimal points for fractional portion.
Rounding currently follows “Bankers Rounding” rules. e.g. 6.5 -> 6, 7.5 -> 8
Arguments
dp
: the number of decimal points to round to.
Example
use rust_decimal::Decimal; use core::str::FromStr; let pi = Decimal::from_str("3.1415926535897932384626433832").unwrap(); assert_eq!(pi.round_dp(2).to_string(), "3.14");
pub const fn unpack(&self) -> UnpackedDecimal
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pub const fn unpack(&self) -> UnpackedDecimal
[src]Convert Decimal
to an internal representation of the underlying struct. This is useful
for debugging the internal state of the object.
Important Disclaimer
This is primarily intended for library maintainers. The internal representation of a
Decimal
is considered “unstable” for public use.
Example
use rust_decimal::Decimal; use core::str::FromStr; let pi = Decimal::from_str("3.1415926535897932384626433832").unwrap(); assert_eq!(format!("{:?}", pi), "3.1415926535897932384626433832"); assert_eq!(format!("{:?}", pi.unpack()), "UnpackedDecimal { \ negative: false, scale: 28, hi: 1703060790, mid: 185874565, lo: 1102470952 \ }");
#[must_use]pub fn checked_add(self, other: Decimal) -> Option<Decimal>
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#[must_use]pub fn checked_add(self, other: Decimal) -> Option<Decimal>
[src]Checked addition. Computes self + other
, returning None
if overflow occurred.
#[must_use]pub fn checked_sub(self, other: Decimal) -> Option<Decimal>
[src]
#[must_use]pub fn checked_sub(self, other: Decimal) -> Option<Decimal>
[src]Checked subtraction. Computes self - other
, returning None
if overflow occurred.
#[must_use]pub fn checked_mul(self, other: Decimal) -> Option<Decimal>
[src]
#[must_use]pub fn checked_mul(self, other: Decimal) -> Option<Decimal>
[src]Checked multiplication. Computes self * other
, returning None
if overflow occurred.
#[must_use]pub fn checked_div(self, other: Decimal) -> Option<Decimal>
[src]
#[must_use]pub fn checked_div(self, other: Decimal) -> Option<Decimal>
[src]Checked division. Computes self / other
, returning None
if other == 0.0
or the
division results in overflow.
#[must_use]pub fn checked_rem(self, other: Decimal) -> Option<Decimal>
[src]
#[must_use]pub fn checked_rem(self, other: Decimal) -> Option<Decimal>
[src]Checked remainder. Computes self % other
, returning None
if other == 0.0
.
pub fn from_str_radix(str: &str, radix: u32) -> Result<Self, Error>
[src]
Trait Implementations
impl<'a> AddAssign<&'a Decimal> for Decimal
[src]
impl<'a> AddAssign<&'a Decimal> for Decimal
[src]fn add_assign(&mut self, other: &'a Decimal)
[src]
fn add_assign(&mut self, other: &'a Decimal)
[src]Performs the +=
operation. Read more
impl<'a> AddAssign<&'a Decimal> for &'a mut Decimal
[src]
impl<'a> AddAssign<&'a Decimal> for &'a mut Decimal
[src]fn add_assign(&mut self, other: &'a Decimal)
[src]
fn add_assign(&mut self, other: &'a Decimal)
[src]Performs the +=
operation. Read more
impl AddAssign<Decimal> for Decimal
[src]
impl AddAssign<Decimal> for Decimal
[src]fn add_assign(&mut self, other: Decimal)
[src]
fn add_assign(&mut self, other: Decimal)
[src]Performs the +=
operation. Read more
impl<'a> AddAssign<Decimal> for &'a mut Decimal
[src]
impl<'a> AddAssign<Decimal> for &'a mut Decimal
[src]fn add_assign(&mut self, other: Decimal)
[src]
fn add_assign(&mut self, other: Decimal)
[src]Performs the +=
operation. Read more
impl Arbitrary<'_> for Decimal
[src]
impl Arbitrary<'_> for Decimal
[src]fn arbitrary(u: &mut Unstructured<'_>) -> ArbitraryResult<Self>
[src]
fn arbitrary(u: &mut Unstructured<'_>) -> ArbitraryResult<Self>
[src]Generate an arbitrary value of Self
from the given unstructured data. Read more
fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>
[src]
fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>
[src]Generate an arbitrary value of Self
from the entirety of the given unstructured data. Read more
impl<'expr> AsExpression<Nullable<Numeric>> for &'expr Decimal
[src]
impl<'expr> AsExpression<Nullable<Numeric>> for &'expr Decimal
[src]type Expression = Bound<Nullable<Numeric>, Self>
type Expression = Bound<Nullable<Numeric>, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
[src]
fn as_expression(self) -> Self::Expression
[src]Perform the conversion
impl AsExpression<Nullable<Numeric>> for Decimal
[src]
impl AsExpression<Nullable<Numeric>> for Decimal
[src]type Expression = Bound<Nullable<Numeric>, Self>
type Expression = Bound<Nullable<Numeric>, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
[src]
fn as_expression(self) -> Self::Expression
[src]Perform the conversion
impl<'expr> AsExpression<Numeric> for &'expr Decimal
[src]
impl<'expr> AsExpression<Numeric> for &'expr Decimal
[src]type Expression = Bound<Numeric, Self>
type Expression = Bound<Numeric, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
[src]
fn as_expression(self) -> Self::Expression
[src]Perform the conversion
impl AsExpression<Numeric> for Decimal
[src]
impl AsExpression<Numeric> for Decimal
[src]type Expression = Bound<Numeric, Self>
type Expression = Bound<Numeric, Self>
The expression being returned
fn as_expression(self) -> Self::Expression
[src]
fn as_expression(self) -> Self::Expression
[src]Perform the conversion
impl CheckedAdd for Decimal
[src]
impl CheckedAdd for Decimal
[src]impl CheckedDiv for Decimal
[src]
impl CheckedDiv for Decimal
[src]impl CheckedMul for Decimal
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impl CheckedMul for Decimal
[src]impl CheckedRem for Decimal
[src]
impl CheckedRem for Decimal
[src]impl CheckedSub for Decimal
[src]
impl CheckedSub for Decimal
[src]impl<'de> Deserialize<'de> for Decimal
[src]
impl<'de> Deserialize<'de> for Decimal
[src]fn deserialize<D>(deserializer: D) -> Result<Decimal, D::Error> where
D: Deserializer<'de>,
[src]
fn deserialize<D>(deserializer: D) -> Result<Decimal, D::Error> where
D: Deserializer<'de>,
[src]Deserialize this value from the given Serde deserializer. Read more
impl<'a> DivAssign<&'a Decimal> for Decimal
[src]
impl<'a> DivAssign<&'a Decimal> for Decimal
[src]fn div_assign(&mut self, other: &'a Decimal)
[src]
fn div_assign(&mut self, other: &'a Decimal)
[src]Performs the /=
operation. Read more
impl<'a> DivAssign<&'a Decimal> for &'a mut Decimal
[src]
impl<'a> DivAssign<&'a Decimal> for &'a mut Decimal
[src]fn div_assign(&mut self, other: &'a Decimal)
[src]
fn div_assign(&mut self, other: &'a Decimal)
[src]Performs the /=
operation. Read more
impl DivAssign<Decimal> for Decimal
[src]
impl DivAssign<Decimal> for Decimal
[src]fn div_assign(&mut self, other: Decimal)
[src]
fn div_assign(&mut self, other: Decimal)
[src]Performs the /=
operation. Read more
impl<'a> DivAssign<Decimal> for &'a mut Decimal
[src]
impl<'a> DivAssign<Decimal> for &'a mut Decimal
[src]fn div_assign(&mut self, other: Decimal)
[src]
fn div_assign(&mut self, other: Decimal)
[src]Performs the /=
operation. Read more
impl FromPrimitive for Decimal
[src]
impl FromPrimitive for Decimal
[src]fn from_i32(n: i32) -> Option<Decimal>
[src]
fn from_i32(n: i32) -> Option<Decimal>
[src]Converts an i32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_i64(n: i64) -> Option<Decimal>
[src]
fn from_i64(n: i64) -> Option<Decimal>
[src]Converts an i64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_i128(n: i128) -> Option<Decimal>
[src]
fn from_i128(n: i128) -> Option<Decimal>
[src]Converts an i128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_u32(n: u32) -> Option<Decimal>
[src]
fn from_u32(n: u32) -> Option<Decimal>
[src]Converts an u32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_u64(n: u64) -> Option<Decimal>
[src]
fn from_u64(n: u64) -> Option<Decimal>
[src]Converts an u64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_u128(n: u128) -> Option<Decimal>
[src]
fn from_u128(n: u128) -> Option<Decimal>
[src]Converts an u128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_f32(n: f32) -> Option<Decimal>
[src]
fn from_f32(n: f32) -> Option<Decimal>
[src]Converts a f32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_f64(n: f64) -> Option<Decimal>
[src]
fn from_f64(n: f64) -> Option<Decimal>
[src]Converts a f64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_isize(n: isize) -> Option<Self>
[src]
fn from_isize(n: isize) -> Option<Self>
[src]Converts an isize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_i8(n: i8) -> Option<Self>
[src]
fn from_i8(n: i8) -> Option<Self>
[src]Converts an i8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_i16(n: i16) -> Option<Self>
[src]
fn from_i16(n: i16) -> Option<Self>
[src]Converts an i16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
fn from_usize(n: usize) -> Option<Self>
[src]
fn from_usize(n: usize) -> Option<Self>
[src]Converts a usize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
impl<'a> FromSql<'a> for Decimal
[src]
impl<'a> FromSql<'a> for Decimal
[src]fn from_sql(
_: &Type,
raw: &[u8]
) -> Result<Decimal, Box<dyn Error + Sync + Send + 'static>>
[src]
fn from_sql(
_: &Type,
raw: &[u8]
) -> Result<Decimal, Box<dyn Error + Sync + Send + 'static>>
[src]Creates a new value of this type from a buffer of data of the specified
Postgres Type
in its binary format. Read more
fn accepts(ty: &Type) -> bool
[src]
fn accepts(ty: &Type) -> bool
[src]Determines if a value of this type can be created from the specified
Postgres Type
. Read more
impl<__ST, __DB> FromSqlRow<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
[src]
impl<__ST, __DB> FromSqlRow<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
[src]fn build_from_row<R: Row<__DB>>(row: &mut R) -> Result<Self>
[src]
fn build_from_row<R: Row<__DB>>(row: &mut R) -> Result<Self>
[src]See the trait documentation.
const FIELDS_NEEDED: usize
[src]
const FIELDS_NEEDED: usize
[src]The number of fields that this type will consume. Must be equal to
the number of times you would call row.take()
in build_from_row
Read more
impl MathematicalOps for Decimal
[src]
impl MathematicalOps for Decimal
[src]fn exp(&self) -> Decimal
[src]
fn exp(&self) -> Decimal
[src]The estimated exponential function, ex. Stops calculating when it is within
tolerance of roughly 0.0000002
. Read more
fn checked_exp(&self) -> Option<Decimal>
[src]
fn checked_exp(&self) -> Option<Decimal>
[src]The estimated exponential function, ex. Stops calculating when it is within
tolerance of roughly 0.0000002
. Returns None
on overflow. Read more
fn exp_with_tolerance(&self, tolerance: Decimal) -> Decimal
[src]
fn exp_with_tolerance(&self, tolerance: Decimal) -> Decimal
[src]The estimated exponential function, ex using the tolerance
provided as a hint
as to when to stop calculating. A larger tolerance will cause the number to stop calculating
sooner at the potential cost of a slightly less accurate result. Read more
fn checked_exp_with_tolerance(&self, tolerance: Decimal) -> Option<Decimal>
[src]
fn checked_exp_with_tolerance(&self, tolerance: Decimal) -> Option<Decimal>
[src]The estimated exponential function, ex using the tolerance
provided as a hint
as to when to stop calculating. A larger tolerance will cause the number to stop calculating
sooner at the potential cost of a slightly less accurate result.
Returns None
on overflow. Read more
fn checked_powi(&self, exp: i64) -> Option<Decimal>
[src]
fn checked_powi(&self, exp: i64) -> Option<Decimal>
[src]Raise self to the given integer exponent xy returning None
on overflow.
fn checked_powu(&self, exp: u64) -> Option<Decimal>
[src]
fn checked_powu(&self, exp: u64) -> Option<Decimal>
[src]Raise self to the given unsigned integer exponent xy returning None
on overflow.
fn checked_powf(&self, exp: f64) -> Option<Decimal>
[src]
fn checked_powf(&self, exp: f64) -> Option<Decimal>
[src]Raise self to the given floating point exponent xy returning None
on overflow.
fn powd(&self, exp: Decimal) -> Decimal
[src]
fn powd(&self, exp: Decimal) -> Decimal
[src]Raise self to the given Decimal exponent: xy. If exp
is not whole then the approximation
ey*ln(x) is used. Read more
fn checked_powd(&self, exp: Decimal) -> Option<Decimal>
[src]
fn checked_powd(&self, exp: Decimal) -> Option<Decimal>
[src]Raise self to the given Decimal exponent xy returning None
on overflow.
If exp
is not whole then the approximation ey*ln(x) is used. Read more
fn sqrt(&self) -> Option<Decimal>
[src]
fn sqrt(&self) -> Option<Decimal>
[src]The square root of a Decimal. Uses a standard Babylonian method.
fn ln(&self) -> Decimal
[src]
fn ln(&self) -> Decimal
[src]The natural logarithm for a Decimal. Uses a fast estimation algorithm This is more accurate on larger numbers and less on numbers less than 1. Read more
fn checked_norm_pdf(&self) -> Option<Decimal>
[src]
fn checked_norm_pdf(&self) -> Option<Decimal>
[src]The Probability density function for a Normal distribution returning None
on overflow.
impl<'a> MulAssign<&'a Decimal> for Decimal
[src]
impl<'a> MulAssign<&'a Decimal> for Decimal
[src]fn mul_assign(&mut self, other: &'a Decimal)
[src]
fn mul_assign(&mut self, other: &'a Decimal)
[src]Performs the *=
operation. Read more
impl<'a> MulAssign<&'a Decimal> for &'a mut Decimal
[src]
impl<'a> MulAssign<&'a Decimal> for &'a mut Decimal
[src]fn mul_assign(&mut self, other: &'a Decimal)
[src]
fn mul_assign(&mut self, other: &'a Decimal)
[src]Performs the *=
operation. Read more
impl MulAssign<Decimal> for Decimal
[src]
impl MulAssign<Decimal> for Decimal
[src]fn mul_assign(&mut self, other: Decimal)
[src]
fn mul_assign(&mut self, other: Decimal)
[src]Performs the *=
operation. Read more
impl<'a> MulAssign<Decimal> for &'a mut Decimal
[src]
impl<'a> MulAssign<Decimal> for &'a mut Decimal
[src]fn mul_assign(&mut self, other: Decimal)
[src]
fn mul_assign(&mut self, other: Decimal)
[src]Performs the *=
operation. Read more
impl Num for Decimal
[src]
impl Num for Decimal
[src]type FromStrRadixErr = Error
fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr>
[src]
fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr>
[src]Convert from a string and radix (typically 2..=36
). Read more
impl Ord for Decimal
[src]
impl Ord for Decimal
[src]impl PartialOrd<Decimal> for Decimal
[src]
impl PartialOrd<Decimal> for Decimal
[src]fn partial_cmp(&self, other: &Decimal) -> Option<Ordering>
[src]
fn partial_cmp(&self, other: &Decimal) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
1.0.0[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
1.0.0[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<__ST, __DB> Queryable<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
[src]
impl<__ST, __DB> Queryable<__ST, __DB> for Decimal where
__DB: Backend,
Self: FromSql<__ST, __DB>,
[src]impl<'a> RemAssign<&'a Decimal> for Decimal
[src]
impl<'a> RemAssign<&'a Decimal> for Decimal
[src]fn rem_assign(&mut self, other: &'a Decimal)
[src]
fn rem_assign(&mut self, other: &'a Decimal)
[src]Performs the %=
operation. Read more
impl<'a> RemAssign<&'a Decimal> for &'a mut Decimal
[src]
impl<'a> RemAssign<&'a Decimal> for &'a mut Decimal
[src]fn rem_assign(&mut self, other: &'a Decimal)
[src]
fn rem_assign(&mut self, other: &'a Decimal)
[src]Performs the %=
operation. Read more
impl RemAssign<Decimal> for Decimal
[src]
impl RemAssign<Decimal> for Decimal
[src]fn rem_assign(&mut self, other: Decimal)
[src]
fn rem_assign(&mut self, other: Decimal)
[src]Performs the %=
operation. Read more
impl<'a> RemAssign<Decimal> for &'a mut Decimal
[src]
impl<'a> RemAssign<Decimal> for &'a mut Decimal
[src]fn rem_assign(&mut self, other: Decimal)
[src]
fn rem_assign(&mut self, other: Decimal)
[src]Performs the %=
operation. Read more
impl Signed for Decimal
[src]
impl Signed for Decimal
[src]fn is_positive(&self) -> bool
[src]
fn is_positive(&self) -> bool
[src]Returns true if the number is positive and false if the number is zero or negative.
fn is_negative(&self) -> bool
[src]
fn is_negative(&self) -> bool
[src]Returns true if the number is negative and false if the number is zero or positive.
impl<'a> SubAssign<&'a Decimal> for Decimal
[src]
impl<'a> SubAssign<&'a Decimal> for Decimal
[src]fn sub_assign(&mut self, other: &'a Decimal)
[src]
fn sub_assign(&mut self, other: &'a Decimal)
[src]Performs the -=
operation. Read more
impl<'a> SubAssign<&'a Decimal> for &'a mut Decimal
[src]
impl<'a> SubAssign<&'a Decimal> for &'a mut Decimal
[src]fn sub_assign(&mut self, other: &'a Decimal)
[src]
fn sub_assign(&mut self, other: &'a Decimal)
[src]Performs the -=
operation. Read more
impl SubAssign<Decimal> for Decimal
[src]
impl SubAssign<Decimal> for Decimal
[src]fn sub_assign(&mut self, other: Decimal)
[src]
fn sub_assign(&mut self, other: Decimal)
[src]Performs the -=
operation. Read more
impl<'a> SubAssign<Decimal> for &'a mut Decimal
[src]
impl<'a> SubAssign<Decimal> for &'a mut Decimal
[src]fn sub_assign(&mut self, other: Decimal)
[src]
fn sub_assign(&mut self, other: Decimal)
[src]Performs the -=
operation. Read more
impl ToPrimitive for Decimal
[src]
impl ToPrimitive for Decimal
[src]fn to_i64(&self) -> Option<i64>
[src]
fn to_i64(&self) -> Option<i64>
[src]Converts the value of self
to an i64
. If the value cannot be
represented by an i64
, then None
is returned. Read more
fn to_i128(&self) -> Option<i128>
[src]
fn to_i128(&self) -> Option<i128>
[src]Converts the value of self
to an i128
. If the value cannot be
represented by an i128
(i64
under the default implementation), then
None
is returned. Read more
fn to_u64(&self) -> Option<u64>
[src]
fn to_u64(&self) -> Option<u64>
[src]Converts the value of self
to a u64
. If the value cannot be
represented by a u64
, then None
is returned. Read more
fn to_u128(&self) -> Option<u128>
[src]
fn to_u128(&self) -> Option<u128>
[src]Converts the value of self
to a u128
. If the value cannot be
represented by a u128
(u64
under the default implementation), then
None
is returned. Read more
fn to_f64(&self) -> Option<f64>
[src]
fn to_f64(&self) -> Option<f64>
[src]Converts the value of self
to an f64
. Overflows may map to positive
or negative inifinity, otherwise None
is returned if the value cannot
be represented by an f64
. Read more
fn to_isize(&self) -> Option<isize>
[src]
fn to_isize(&self) -> Option<isize>
[src]Converts the value of self
to an isize
. If the value cannot be
represented by an isize
, then None
is returned. Read more
fn to_i8(&self) -> Option<i8>
[src]
fn to_i8(&self) -> Option<i8>
[src]Converts the value of self
to an i8
. If the value cannot be
represented by an i8
, then None
is returned. Read more
fn to_i16(&self) -> Option<i16>
[src]
fn to_i16(&self) -> Option<i16>
[src]Converts the value of self
to an i16
. If the value cannot be
represented by an i16
, then None
is returned. Read more
fn to_i32(&self) -> Option<i32>
[src]
fn to_i32(&self) -> Option<i32>
[src]Converts the value of self
to an i32
. If the value cannot be
represented by an i32
, then None
is returned. Read more
fn to_usize(&self) -> Option<usize>
[src]
fn to_usize(&self) -> Option<usize>
[src]Converts the value of self
to a usize
. If the value cannot be
represented by a usize
, then None
is returned. Read more
fn to_u8(&self) -> Option<u8>
[src]
fn to_u8(&self) -> Option<u8>
[src]Converts the value of self
to a u8
. If the value cannot be
represented by a u8
, then None
is returned. Read more
fn to_u16(&self) -> Option<u16>
[src]
fn to_u16(&self) -> Option<u16>
[src]Converts the value of self
to a u16
. If the value cannot be
represented by a u16
, then None
is returned. Read more
impl ToSql for Decimal
[src]
impl ToSql for Decimal
[src]fn to_sql(
&self,
_: &Type,
out: &mut BytesMut
) -> Result<IsNull, Box<dyn Error + Sync + Send + 'static>>
[src]
fn to_sql(
&self,
_: &Type,
out: &mut BytesMut
) -> Result<IsNull, Box<dyn Error + Sync + Send + 'static>>
[src]Converts the value of self
into the binary format of the specified
Postgres Type
, appending it to out
. Read more
impl<__DB> ToSql<Nullable<Numeric>, __DB> for Decimal where
__DB: Backend,
Self: ToSql<Numeric, __DB>,
[src]
impl<__DB> ToSql<Nullable<Numeric>, __DB> for Decimal where
__DB: Backend,
Self: ToSql<Numeric, __DB>,
[src]impl Copy for Decimal
[src]
impl Eq for Decimal
[src]
Auto Trait Implementations
impl RefUnwindSafe for Decimal
impl Send for Decimal
impl Sync for Decimal
impl Unpin for Decimal
impl UnwindSafe for Decimal
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]
impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
[src]
pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<T> BorrowToSql for T where
T: ToSql,
[src]
impl<T> BorrowToSql for T where
T: ToSql,
[src]pub fn borrow_to_sql(&self) -> &dyn ToSql
[src]
pub fn borrow_to_sql(&self) -> &dyn ToSql
[src]Returns a reference to self
as a ToSql
trait object.
impl<T> IntoSql for T
[src]
impl<T> IntoSql for T
[src]fn into_sql<T>(self) -> Self::Expression where
Self: AsExpression<T>,
[src]
fn into_sql<T>(self) -> Self::Expression where
Self: AsExpression<T>,
[src]Convert self
to an expression for Diesel’s query builder. Read more
fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression where
&'a Self: AsExpression<T>,
[src]
fn as_sql<'a, T>(&'a self) -> <&'a Self as AsExpression<T>>::Expression where
&'a Self: AsExpression<T>,
[src]Convert &self
to an expression for Diesel’s query builder. Read more
impl<T> Same<T> for T
impl<T> Same<T> for T
type Output = T
type Output = T
Should always be Self
impl<T> ToOwned for T where
T: Clone,
[src]
impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
[src]
pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
[src]
pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
pub fn vzip(self) -> V
impl<T> DeserializeOwned for T where
T: for<'de> Deserialize<'de>,
[src]
T: for<'de> Deserialize<'de>,
impl<T> FromSqlOwned for T where
T: for<'a> FromSql<'a>,
[src]
T: for<'a> FromSql<'a>,
impl<T> NumAssign for T where
T: Num + NumAssignOps<T>,
[src]
T: Num + NumAssignOps<T>,
impl<T, Rhs> NumAssignOps<Rhs> for T where
T: AddAssign<Rhs> + SubAssign<Rhs> + MulAssign<Rhs> + DivAssign<Rhs> + RemAssign<Rhs>,
[src]
T: AddAssign<Rhs> + SubAssign<Rhs> + MulAssign<Rhs> + DivAssign<Rhs> + RemAssign<Rhs>,
impl<T> NumAssignRef for T where
T: NumAssign + for<'r> NumAssignOps<&'r T>,
[src]
T: NumAssign + for<'r> NumAssignOps<&'r T>,
impl<T, Rhs, Output> NumOps<Rhs, Output> for T where
T: Sub<Rhs, Output = Output> + Mul<Rhs, Output = Output> + Div<Rhs, Output = Output> + Add<Rhs, Output = Output> + Rem<Rhs, Output = Output>,
[src]
T: Sub<Rhs, Output = Output> + Mul<Rhs, Output = Output> + Div<Rhs, Output = Output> + Add<Rhs, Output = Output> + Rem<Rhs, Output = Output>,
impl<T> NumRef for T where
T: Num + for<'r> NumOps<&'r T, T>,
[src]
T: Num + for<'r> NumOps<&'r T, T>,
impl<T, Base> RefNum<Base> for T where
T: NumOps<Base, Base> + for<'r> NumOps<&'r Base, Base>,
[src]
T: NumOps<Base, Base> + for<'r> NumOps<&'r Base, Base>,