Struct easyfix::types::basic_types::Decimal
[−]pub struct Decimal { /* private fields */ }
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
impl Decimal
pub const MIN: Decimal = MIN
pub const MIN: Decimal = MIN
The smallest value that can be represented by this decimal type.
Examples
Basic usage:
assert_eq!(Decimal::MIN, dec!(-79_228_162_514_264_337_593_543_950_335));
pub const MAX: Decimal = MAX
pub const MAX: Decimal = MAX
The largest value that can be represented by this decimal type.
Examples
Basic usage:
assert_eq!(Decimal::MAX, dec!(79_228_162_514_264_337_593_543_950_335));
pub const NEGATIVE_ONE: Decimal = NEGATIVE_ONE
pub const NEGATIVE_ONE: Decimal = NEGATIVE_ONE
pub const ONE_HUNDRED: Decimal = ONE_HUNDRED
pub const ONE_HUNDRED: Decimal = ONE_HUNDRED
pub const ONE_THOUSAND: Decimal = ONE_THOUSAND
pub const ONE_THOUSAND: Decimal = ONE_THOUSAND
pub fn new(num: i64, scale: u32) -> Decimal
pub fn new(num: i64, scale: u32) -> Decimal
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
let pi = Decimal::new(3141, 3);
assert_eq!(pi.to_string(), "3.141");
pub const fn try_new(num: i64, scale: u32) -> Result<Decimal, Error>
pub const fn try_new(num: i64, scale: u32) -> Result<Decimal, Error>
Checked version of Decimal::new
. Will return Err
instead of panicking at run-time.
Example
let max = Decimal::try_new(i64::MAX, u32::MAX);
assert!(max.is_err());
pub fn from_i128_with_scale(num: i128, scale: u32) -> Decimal
pub fn from_i128_with_scale(num: i128, scale: u32) -> Decimal
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
let pi = Decimal::from_i128_with_scale(3141i128, 3);
assert_eq!(pi.to_string(), "3.141");
pub const fn try_from_i128_with_scale(
num: i128,
scale: u32
) -> Result<Decimal, Error>
pub const fn try_from_i128_with_scale(
num: i128,
scale: u32
) -> Result<Decimal, Error>
Checked version of Decimal::from_i128_with_scale
. Will return Err
instead
of panicking at run-time.
Example
let max = Decimal::try_from_i128_with_scale(i128::MAX, u32::MAX);
assert!(max.is_err());
pub const fn from_parts(
lo: u32,
mid: u32,
hi: u32,
negative: bool,
scale: u32
) -> Decimal
pub const fn from_parts(
lo: u32,
mid: u32,
hi: u32,
negative: bool,
scale: u32
) -> Decimal
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
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>
pub fn from_scientific(value: &str) -> Result<Decimal, Error>
pub fn from_str_radix(str: &str, radix: u32) -> Result<Decimal, Error>
pub fn from_str_radix(str: &str, radix: u32) -> Result<Decimal, Error>
Converts a string slice in a given base to a decimal.
The string is expected to be an optional + sign followed by digits. Digits are a subset of these characters, depending on radix, and will return an error if outside the expected range:
- 0-9
- a-z
- A-Z
Examples
Basic usage:
assert_eq!(Decimal::from_str_radix("A", 16)?.to_string(), "10");
pub fn from_str_exact(str: &str) -> Result<Decimal, Error>
pub fn from_str_exact(str: &str) -> Result<Decimal, Error>
Parses a string slice into a decimal. If the value underflows and cannot be represented with the given scale then this will return an error.
Examples
Basic usage:
assert_eq!(Decimal::from_str_exact("0.001")?.to_string(), "0.001");
assert_eq!(Decimal::from_str_exact("0.00000_00000_00000_00000_00000_001")?.to_string(), "0.0000000000000000000000000001");
assert_eq!(Decimal::from_str_exact("0.00000_00000_00000_00000_00000_0001"), Err(Error::Underflow));
pub const fn scale(&self) -> u32
pub const fn scale(&self) -> u32
Returns the scale of the decimal number, otherwise known as e
.
Example
let num = Decimal::new(1234, 3);
assert_eq!(num.scale(), 3u32);
pub const fn mantissa(&self) -> i128
pub const fn mantissa(&self) -> i128
Returns the mantissa of the decimal number.
Example
use rust_decimal_macros::dec;
let num = dec!(-1.2345678);
assert_eq!(num.mantissa(), -12345678i128);
assert_eq!(num.scale(), 7);
pub const fn is_zero(&self) -> bool
pub const fn is_zero(&self) -> bool
Returns true if this Decimal number is equivalent to zero.
Example
let num = Decimal::ZERO;
assert!(num.is_zero());
pub fn set_sign(&mut self, positive: bool)
👎 Deprecated since 1.4.0: please use set_sign_positive
instead
pub fn set_sign(&mut self, positive: bool)
please use set_sign_positive
instead
pub fn set_sign_positive(&mut self, positive: bool)
pub fn set_sign_positive(&mut self, positive: bool)
pub fn set_sign_negative(&mut self, negative: bool)
pub fn set_sign_negative(&mut self, negative: bool)
pub fn rescale(&mut self, scale: u32)
pub fn rescale(&mut self, scale: u32)
Modifies the Decimal
towards the desired scale, attempting to do so without changing the
underlying number itself.
Setting the scale to something less then the current Decimal
s scale will
cause the newly created Decimal
to perform rounding using the MidpointAwayFromZero
strategy.
Scales greater than the maximum precision that can be represented by Decimal
will be
automatically rounded to either Decimal::MAX_PRECISION
or the maximum precision that can
be represented with the given mantissa.
Arguments
scale
: The desired scale to use for the newDecimal
number.
Example
use rust_decimal_macros::dec;
// Rescaling to a higher scale preserves the value
let mut number = dec!(1.123);
assert_eq!(number.scale(), 3);
number.rescale(6);
assert_eq!(number.to_string(), "1.123000");
assert_eq!(number.scale(), 6);
// Rescaling to a lower scale forces the number to be rounded
let mut number = dec!(1.45);
assert_eq!(number.scale(), 2);
number.rescale(1);
assert_eq!(number.to_string(), "1.5");
assert_eq!(number.scale(), 1);
// This function never fails. Consequently, if a scale is provided that is unable to be
// represented using the given mantissa, then the maximum possible scale is used.
let mut number = dec!(11.76470588235294);
assert_eq!(number.scale(), 14);
number.rescale(28);
// A scale of 28 cannot be represented given this mantissa, however it was able to represent
// a number with a scale of 27
assert_eq!(number.to_string(), "11.764705882352940000000000000");
assert_eq!(number.scale(), 27);
pub const fn serialize(&self) -> [u8; 16]
pub const fn serialize(&self) -> [u8; 16]
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
pub fn deserialize(bytes: [u8; 16]) -> Decimal
pub fn deserialize(bytes: [u8; 16]) -> Decimal
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
pub fn is_negative(&self) -> bool
👎 Deprecated since 0.6.3: please use is_sign_negative
instead
pub fn is_negative(&self) -> bool
please use is_sign_negative
instead
Returns true
if the decimal is negative.
pub fn is_positive(&self) -> bool
👎 Deprecated since 0.6.3: please use is_sign_positive
instead
pub fn is_positive(&self) -> bool
please use is_sign_positive
instead
Returns true
if the decimal is positive.
pub const fn is_sign_negative(&self) -> bool
pub const fn is_sign_negative(&self) -> bool
Returns true
if the sign bit of the decimal is negative.
Example
assert_eq!(true, Decimal::new(-1, 0).is_sign_negative());
assert_eq!(false, Decimal::new(1, 0).is_sign_negative());
pub const fn is_sign_positive(&self) -> bool
pub const fn is_sign_positive(&self) -> bool
Returns true
if the sign bit of the decimal is positive.
Example
assert_eq!(false, Decimal::new(-1, 0).is_sign_positive());
assert_eq!(true, Decimal::new(1, 0).is_sign_positive());
pub const fn min_value() -> Decimal
👎 Deprecated since 1.12.0: Use the associated constant Decimal::MIN
pub const fn min_value() -> Decimal
Use the associated constant Decimal::MIN
Returns the minimum possible number that Decimal
can represent.
pub const fn max_value() -> Decimal
👎 Deprecated since 1.12.0: Use the associated constant Decimal::MAX
pub const fn max_value() -> Decimal
Use the associated constant Decimal::MAX
Returns the maximum possible number that Decimal
can represent.
pub fn trunc(&self) -> Decimal
pub fn trunc(&self) -> Decimal
Returns a new Decimal
integral with no fractional portion.
This is a true truncation whereby no rounding is performed.
Example
let pi = Decimal::new(3141, 3);
let trunc = Decimal::new(3, 0);
// note that it returns a decimal
assert_eq!(pi.trunc(), trunc);
pub fn fract(&self) -> Decimal
pub fn fract(&self) -> Decimal
Returns a new Decimal
representing the fractional portion of the number.
Example
let pi = Decimal::new(3141, 3);
let fract = Decimal::new(141, 3);
// note that it returns a decimal
assert_eq!(pi.fract(), fract);
pub fn abs(&self) -> Decimal
pub fn abs(&self) -> Decimal
Computes the absolute value of self
.
Example
let num = Decimal::new(-3141, 3);
assert_eq!(num.abs().to_string(), "3.141");
pub fn floor(&self) -> Decimal
pub fn floor(&self) -> Decimal
Returns the largest integer less than or equal to a number.
Example
let num = Decimal::new(3641, 3);
assert_eq!(num.floor().to_string(), "3");
pub fn ceil(&self) -> Decimal
pub fn ceil(&self) -> Decimal
Returns the smallest integer greater than or equal to a number.
Example
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");
pub fn max(self, other: Decimal) -> Decimal
pub fn max(self, other: Decimal) -> Decimal
Returns the maximum of the two numbers.
let x = Decimal::new(1, 0);
let y = Decimal::new(2, 0);
assert_eq!(y, x.max(y));
pub fn min(self, other: Decimal) -> Decimal
pub fn min(self, other: Decimal) -> Decimal
Returns the minimum of the two numbers.
let x = Decimal::new(1, 0);
let y = Decimal::new(2, 0);
assert_eq!(x, x.min(y));
pub fn normalize(&self) -> Decimal
pub fn normalize(&self) -> Decimal
Strips any trailing zero’s from a Decimal
and converts -0 to 0.
Example
let number = Decimal::from_str("3.100")?;
assert_eq!(number.normalize().to_string(), "3.1");
pub fn normalize_assign(&mut self)
pub fn normalize_assign(&mut self)
An in place version of normalize
. Strips any trailing zero’s from a Decimal
and converts -0 to 0.
Example
let mut number = Decimal::from_str("3.100")?;
assert_eq!(number.to_string(), "3.100");
number.normalize_assign();
assert_eq!(number.to_string(), "3.1");
pub fn round(&self) -> Decimal
pub fn round(&self) -> Decimal
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
// 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");
pub fn round_dp_with_strategy(
&self,
dp: u32,
strategy: RoundingStrategy
) -> Decimal
pub fn round_dp_with_strategy(
&self,
dp: u32,
strategy: RoundingStrategy
) -> Decimal
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
: the [RoundingStrategy
] to use.
Example
let tax = dec!(3.4395);
assert_eq!(tax.round_dp_with_strategy(2, RoundingStrategy::MidpointAwayFromZero).to_string(), "3.44");
pub fn round_dp(&self, dp: u32) -> Decimal
pub fn round_dp(&self, dp: u32) -> Decimal
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
let pi = dec!(3.1415926535897932384626433832);
assert_eq!(pi.round_dp(2).to_string(), "3.14");
pub fn round_sf(&self, digits: u32) -> Option<Decimal>
pub fn round_sf(&self, digits: u32) -> Option<Decimal>
Returns Some(Decimal)
number rounded to the specified number of significant digits. If
the resulting number is unable to be represented by the Decimal
number then None
will
be returned.
When the number of significant figures of the Decimal
being rounded is greater than the requested
number of significant digits then rounding will be performed using MidpointNearestEven
strategy.
Arguments
digits
: the number of significant digits to round to.
Remarks
A significant figure is determined using the following rules:
- Non-zero digits are always significant.
- Zeros between non-zero digits are always significant.
- Leading zeros are never significant.
- Trailing zeros are only significant if the number contains a decimal point.
Example
use rust_decimal_macros::dec;
let value = dec!(305.459);
assert_eq!(value.round_sf(0), Some(dec!(0)));
assert_eq!(value.round_sf(1), Some(dec!(300)));
assert_eq!(value.round_sf(2), Some(dec!(310)));
assert_eq!(value.round_sf(3), Some(dec!(305)));
assert_eq!(value.round_sf(4), Some(dec!(305.5)));
assert_eq!(value.round_sf(5), Some(dec!(305.46)));
assert_eq!(value.round_sf(6), Some(dec!(305.459)));
assert_eq!(value.round_sf(7), Some(dec!(305.4590)));
assert_eq!(Decimal::MAX.round_sf(1), None);
let value = dec!(0.012301);
assert_eq!(value.round_sf(3), Some(dec!(0.0123)));
pub fn round_sf_with_strategy(
&self,
digits: u32,
strategy: RoundingStrategy
) -> Option<Decimal>
pub fn round_sf_with_strategy(
&self,
digits: u32,
strategy: RoundingStrategy
) -> Option<Decimal>
Returns Some(Decimal)
number rounded to the specified number of significant digits. If
the resulting number is unable to be represented by the Decimal
number then None
will
be returned.
When the number of significant figures of the Decimal
being rounded is greater than the requested
number of significant digits then rounding will be performed using the provided [RoundingStrategy].
Arguments
digits
: the number of significant digits to round to.strategy
: if required, the rounding strategy to use.
Remarks
A significant figure is determined using the following rules:
- Non-zero digits are always significant.
- Zeros between non-zero digits are always significant.
- Leading zeros are never significant.
- Trailing zeros are only significant if the number contains a decimal point.
Example
use rust_decimal_macros::dec;
let value = dec!(305.459);
assert_eq!(value.round_sf_with_strategy(0, RoundingStrategy::ToZero), Some(dec!(0)));
assert_eq!(value.round_sf_with_strategy(1, RoundingStrategy::ToZero), Some(dec!(300)));
assert_eq!(value.round_sf_with_strategy(2, RoundingStrategy::ToZero), Some(dec!(300)));
assert_eq!(value.round_sf_with_strategy(3, RoundingStrategy::ToZero), Some(dec!(305)));
assert_eq!(value.round_sf_with_strategy(4, RoundingStrategy::ToZero), Some(dec!(305.4)));
assert_eq!(value.round_sf_with_strategy(5, RoundingStrategy::ToZero), Some(dec!(305.45)));
assert_eq!(value.round_sf_with_strategy(6, RoundingStrategy::ToZero), Some(dec!(305.459)));
assert_eq!(value.round_sf_with_strategy(7, RoundingStrategy::ToZero), Some(dec!(305.4590)));
assert_eq!(Decimal::MAX.round_sf_with_strategy(1, RoundingStrategy::ToZero), Some(dec!(70000000000000000000000000000)));
let value = dec!(0.012301);
assert_eq!(value.round_sf_with_strategy(3, RoundingStrategy::AwayFromZero), Some(dec!(0.0124)));
pub const fn unpack(&self) -> UnpackedDecimal
pub const fn unpack(&self) -> UnpackedDecimal
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_macros::dec;
let pi = dec!(3.1415926535897932384626433832);
assert_eq!(format!("{:?}", pi), "3.1415926535897932384626433832");
assert_eq!(format!("{:?}", pi.unpack()), "UnpackedDecimal { \
negative: false, scale: 28, hi: 1703060790, mid: 185874565, lo: 1102470952 \
}");
pub fn from_f32_retain(n: f32) -> Option<Decimal>
pub fn from_f32_retain(n: f32) -> Option<Decimal>
Parses a 32-bit float into a Decimal number whilst retaining any non-guaranteed precision.
Typically when a float is parsed in Rust Decimal, any excess bits (after ~7.22 decimal points for f32 as per IEEE-754) are removed due to any digits following this are considered an approximation at best. This function bypasses this additional step and retains these excess bits.
Example
// Usually floats are parsed leveraging float guarantees. i.e. 0.1_f32 => 0.1
assert_eq!("0.1", Decimal::from_f32(0.1_f32).unwrap().to_string());
// Sometimes, we may want to represent the approximation exactly.
assert_eq!("0.100000001490116119384765625", Decimal::from_f32_retain(0.1_f32).unwrap().to_string());
pub fn from_f64_retain(n: f64) -> Option<Decimal>
pub fn from_f64_retain(n: f64) -> Option<Decimal>
Parses a 64-bit float into a Decimal number whilst retaining any non-guaranteed precision.
Typically when a float is parsed in Rust Decimal, any excess bits (after ~15.95 decimal points for f64 as per IEEE-754) are removed due to any digits following this are considered an approximation at best. This function bypasses this additional step and retains these excess bits.
Example
// Usually floats are parsed leveraging float guarantees. i.e. 0.1_f64 => 0.1
assert_eq!("0.1", Decimal::from_f64(0.1_f64).unwrap().to_string());
// Sometimes, we may want to represent the approximation exactly.
assert_eq!("0.1000000000000000055511151231", Decimal::from_f64_retain(0.1_f64).unwrap().to_string());
impl Decimal
impl Decimal
pub fn checked_add(self, other: Decimal) -> Option<Decimal>
pub fn checked_add(self, other: Decimal) -> Option<Decimal>
Checked addition. Computes self + other
, returning None
if overflow occurred.
pub fn saturating_add(self, other: Decimal) -> Decimal
pub fn saturating_add(self, other: Decimal) -> Decimal
Saturating addition. Computes self + other
, saturating at the relevant upper or lower boundary.
pub fn checked_mul(self, other: Decimal) -> Option<Decimal>
pub fn checked_mul(self, other: Decimal) -> Option<Decimal>
Checked multiplication. Computes self * other
, returning None
if overflow occurred.
pub fn saturating_mul(self, other: Decimal) -> Decimal
pub fn saturating_mul(self, other: Decimal) -> Decimal
Saturating multiplication. Computes self * other
, saturating at the relevant upper or lower boundary.
pub fn checked_sub(self, other: Decimal) -> Option<Decimal>
pub fn checked_sub(self, other: Decimal) -> Option<Decimal>
Checked subtraction. Computes self - other
, returning None
if overflow occurred.
pub fn saturating_sub(self, other: Decimal) -> Decimal
pub fn saturating_sub(self, other: Decimal) -> Decimal
Saturating subtraction. Computes self - other
, saturating at the relevant upper or lower boundary.
pub fn checked_div(self, other: Decimal) -> Option<Decimal>
pub fn checked_div(self, other: Decimal) -> Option<Decimal>
Checked division. Computes self / other
, returning None
if overflow occurred.
pub fn checked_rem(self, other: Decimal) -> Option<Decimal>
pub fn checked_rem(self, other: Decimal) -> Option<Decimal>
Checked remainder. Computes self % other
, returning None
if overflow occurred.
Trait Implementations
impl<'a> AddAssign<&'a Decimal> for Decimal
impl<'a> AddAssign<&'a Decimal> for Decimal
fn add_assign(&mut self, other: &'a Decimal)
fn add_assign(&mut self, other: &'a Decimal)
Performs the +=
operation. Read more
impl<'a> AddAssign<&'a Decimal> for &'a mut Decimal
impl<'a> AddAssign<&'a Decimal> for &'a mut Decimal
fn add_assign(&mut self, other: &'a Decimal)
fn add_assign(&mut self, other: &'a Decimal)
Performs the +=
operation. Read more
impl<'a> AddAssign<Decimal> for &'a mut Decimal
impl<'a> AddAssign<Decimal> for &'a mut Decimal
fn add_assign(&mut self, other: Decimal)
fn add_assign(&mut self, other: Decimal)
Performs the +=
operation. Read more
impl AddAssign<Decimal> for Decimal
impl AddAssign<Decimal> for Decimal
fn add_assign(&mut self, other: Decimal)
fn add_assign(&mut self, other: Decimal)
Performs the +=
operation. Read more
impl CheckedAdd for Decimal
impl CheckedAdd for Decimal
fn checked_add(&self, v: &Decimal) -> Option<Decimal>
fn checked_add(&self, v: &Decimal) -> Option<Decimal>
Adds two numbers, checking for overflow. If overflow happens, None
is
returned. Read more
impl CheckedDiv for Decimal
impl CheckedDiv for Decimal
fn checked_div(&self, v: &Decimal) -> Option<Decimal>
fn checked_div(&self, v: &Decimal) -> Option<Decimal>
Divides two numbers, checking for underflow, overflow and division by
zero. If any of that happens, None
is returned. Read more
impl CheckedMul for Decimal
impl CheckedMul for Decimal
fn checked_mul(&self, v: &Decimal) -> Option<Decimal>
fn checked_mul(&self, v: &Decimal) -> Option<Decimal>
Multiplies two numbers, checking for underflow or overflow. If underflow
or overflow happens, None
is returned. Read more
impl CheckedRem for Decimal
impl CheckedRem for Decimal
fn checked_rem(&self, v: &Decimal) -> Option<Decimal>
fn checked_rem(&self, v: &Decimal) -> Option<Decimal>
Finds the remainder of dividing two numbers, checking for underflow, overflow and division
by zero. If any of that happens, None
is returned. Read more
impl CheckedSub for Decimal
impl CheckedSub for Decimal
fn checked_sub(&self, v: &Decimal) -> Option<Decimal>
fn checked_sub(&self, v: &Decimal) -> Option<Decimal>
Subtracts two numbers, checking for underflow. If underflow happens,
None
is returned. Read more
impl<'de> Deserialize<'de> for Decimal
impl<'de> Deserialize<'de> for Decimal
fn deserialize<D>(
deserializer: D
) -> Result<Decimal, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
fn deserialize<D>(
deserializer: D
) -> Result<Decimal, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
impl<'a> DivAssign<&'a Decimal> for &'a mut Decimal
impl<'a> DivAssign<&'a Decimal> for &'a mut Decimal
fn div_assign(&mut self, other: &'a Decimal)
fn div_assign(&mut self, other: &'a Decimal)
Performs the /=
operation. Read more
impl<'a> DivAssign<&'a Decimal> for Decimal
impl<'a> DivAssign<&'a Decimal> for Decimal
fn div_assign(&mut self, other: &'a Decimal)
fn div_assign(&mut self, other: &'a Decimal)
Performs the /=
operation. Read more
impl DivAssign<Decimal> for Decimal
impl DivAssign<Decimal> for Decimal
fn div_assign(&mut self, other: Decimal)
fn div_assign(&mut self, other: Decimal)
Performs the /=
operation. Read more
impl<'a> DivAssign<Decimal> for &'a mut Decimal
impl<'a> DivAssign<Decimal> for &'a mut Decimal
fn div_assign(&mut self, other: Decimal)
fn div_assign(&mut self, other: Decimal)
Performs the /=
operation. Read more
impl FromPrimitive for Decimal
impl FromPrimitive for Decimal
fn from_i32(n: i32) -> Option<Decimal>
fn from_i32(n: i32) -> Option<Decimal>
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>
fn from_i64(n: i64) -> Option<Decimal>
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>
fn from_i128(n: i128) -> Option<Decimal>
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>
fn from_u32(n: u32) -> Option<Decimal>
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>
fn from_u64(n: u64) -> Option<Decimal>
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>
fn from_u128(n: u128) -> Option<Decimal>
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>
fn from_f32(n: f32) -> Option<Decimal>
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>
fn from_f64(n: f64) -> Option<Decimal>
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
sourcefn from_isize(n: isize) -> Option<Self>
fn from_isize(n: isize) -> Option<Self>
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
sourcefn from_i8(n: i8) -> Option<Self>
fn from_i8(n: i8) -> Option<Self>
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
sourcefn from_i16(n: i16) -> Option<Self>
fn from_i16(n: i16) -> Option<Self>
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
sourcefn from_usize(n: usize) -> Option<Self>
fn from_usize(n: usize) -> Option<Self>
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> MulAssign<&'a Decimal> for &'a mut Decimal
impl<'a> MulAssign<&'a Decimal> for &'a mut Decimal
fn mul_assign(&mut self, other: &'a Decimal)
fn mul_assign(&mut self, other: &'a Decimal)
Performs the *=
operation. Read more
impl<'a> MulAssign<&'a Decimal> for Decimal
impl<'a> MulAssign<&'a Decimal> for Decimal
fn mul_assign(&mut self, other: &'a Decimal)
fn mul_assign(&mut self, other: &'a Decimal)
Performs the *=
operation. Read more
impl MulAssign<Decimal> for Decimal
impl MulAssign<Decimal> for Decimal
fn mul_assign(&mut self, other: Decimal)
fn mul_assign(&mut self, other: Decimal)
Performs the *=
operation. Read more
impl<'a> MulAssign<Decimal> for &'a mut Decimal
impl<'a> MulAssign<Decimal> for &'a mut Decimal
fn mul_assign(&mut self, other: Decimal)
fn mul_assign(&mut self, other: Decimal)
Performs the *=
operation. Read more
impl Num for Decimal
impl Num for Decimal
type FromStrRadixErr = Error
fn from_str_radix(
str: &str,
radix: u32
) -> Result<Decimal, <Decimal as Num>::FromStrRadixErr>
fn from_str_radix(
str: &str,
radix: u32
) -> Result<Decimal, <Decimal as Num>::FromStrRadixErr>
Convert from a string and radix (typically 2..=36
). Read more
impl Ord for Decimal
impl Ord for Decimal
impl PartialOrd<Decimal> for Decimal
impl PartialOrd<Decimal> for Decimal
fn partial_cmp(&self, other: &Decimal) -> Option<Ordering>
fn partial_cmp(&self, other: &Decimal) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl<'a> RemAssign<&'a Decimal> for Decimal
impl<'a> RemAssign<&'a Decimal> for Decimal
fn rem_assign(&mut self, other: &'a Decimal)
fn rem_assign(&mut self, other: &'a Decimal)
Performs the %=
operation. Read more
impl<'a> RemAssign<&'a Decimal> for &'a mut Decimal
impl<'a> RemAssign<&'a Decimal> for &'a mut Decimal
fn rem_assign(&mut self, other: &'a Decimal)
fn rem_assign(&mut self, other: &'a Decimal)
Performs the %=
operation. Read more
impl<'a> RemAssign<Decimal> for &'a mut Decimal
impl<'a> RemAssign<Decimal> for &'a mut Decimal
fn rem_assign(&mut self, other: Decimal)
fn rem_assign(&mut self, other: Decimal)
Performs the %=
operation. Read more
impl RemAssign<Decimal> for Decimal
impl RemAssign<Decimal> for Decimal
fn rem_assign(&mut self, other: Decimal)
fn rem_assign(&mut self, other: Decimal)
Performs the %=
operation. Read more
impl Serialize for Decimal
impl Serialize for Decimal
fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,
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. Read more
impl Signed for Decimal
impl Signed for Decimal
fn is_positive(&self) -> bool
fn is_positive(&self) -> bool
Returns true if the number is positive and false if the number is zero or negative.
fn is_negative(&self) -> bool
fn is_negative(&self) -> bool
Returns true if the number is negative and false if the number is zero or positive.
impl<'a> SubAssign<&'a Decimal> for &'a mut Decimal
impl<'a> SubAssign<&'a Decimal> for &'a mut Decimal
fn sub_assign(&mut self, other: &'a Decimal)
fn sub_assign(&mut self, other: &'a Decimal)
Performs the -=
operation. Read more
impl<'a> SubAssign<&'a Decimal> for Decimal
impl<'a> SubAssign<&'a Decimal> for Decimal
fn sub_assign(&mut self, other: &'a Decimal)
fn sub_assign(&mut self, other: &'a Decimal)
Performs the -=
operation. Read more
impl<'a> SubAssign<Decimal> for &'a mut Decimal
impl<'a> SubAssign<Decimal> for &'a mut Decimal
fn sub_assign(&mut self, other: Decimal)
fn sub_assign(&mut self, other: Decimal)
Performs the -=
operation. Read more
impl SubAssign<Decimal> for Decimal
impl SubAssign<Decimal> for Decimal
fn sub_assign(&mut self, other: Decimal)
fn sub_assign(&mut self, other: Decimal)
Performs the -=
operation. Read more
impl ToPrimitive for Decimal
impl ToPrimitive for Decimal
fn to_i64(&self) -> Option<i64>
fn to_i64(&self) -> Option<i64>
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>
fn to_i128(&self) -> Option<i128>
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>
fn to_u64(&self) -> Option<u64>
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>
fn to_u128(&self) -> Option<u128>
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>
fn to_f64(&self) -> Option<f64>
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
sourcefn to_isize(&self) -> Option<isize>
fn to_isize(&self) -> Option<isize>
Converts the value of self
to an isize
. If the value cannot be
represented by an isize
, then None
is returned. Read more
sourcefn to_i8(&self) -> Option<i8>
fn to_i8(&self) -> Option<i8>
Converts the value of self
to an i8
. If the value cannot be
represented by an i8
, then None
is returned. Read more
sourcefn to_i16(&self) -> Option<i16>
fn to_i16(&self) -> Option<i16>
Converts the value of self
to an i16
. If the value cannot be
represented by an i16
, then None
is returned. Read more
sourcefn to_i32(&self) -> Option<i32>
fn to_i32(&self) -> Option<i32>
Converts the value of self
to an i32
. If the value cannot be
represented by an i32
, then None
is returned. Read more
sourcefn to_usize(&self) -> Option<usize>
fn to_usize(&self) -> Option<usize>
Converts the value of self
to a usize
. If the value cannot be
represented by a usize
, then None
is returned. Read more
sourcefn to_u8(&self) -> Option<u8>
fn to_u8(&self) -> Option<u8>
Converts the value of self
to a u8
. If the value cannot be
represented by a u8
, then None
is returned. Read more
sourcefn to_u16(&self) -> Option<u16>
fn to_u16(&self) -> Option<u16>
Converts the value of self
to a u16
. If the value cannot be
represented by a u16
, then None
is returned. Read more
impl TryFrom<f32> for Decimal
impl TryFrom<f32> for Decimal
Try to convert a f32
into a Decimal
.
Can fail if the value is out of range for Decimal
.
impl TryFrom<f64> for Decimal
impl TryFrom<f64> for Decimal
Try to convert a f64
into a Decimal
.
Can fail if the value is out of range for Decimal
.
impl Copy for Decimal
impl Eq for Decimal
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
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more