Enum Decimal

pub enum Decimal {
    NegativeInf,
    Normalized(Decimal),
    PositiveInf,
    NaN,
}

Variants

NegativeInf

Normalized(Decimal)

PositiveInf

NaN

Implementations

impl Decimal

pub fn to_protobuf(self, output: &mut impl Write) -> ArrayResult<usize>

Used by PrimitiveArray to serialize the array to protobuf.

pub fn from_protobuf(input: &mut impl Read) -> ArrayResult<Self>

Used by DecimalValueReader to deserialize the array from protobuf.

pub fn from_scientific(value: &str) -> Option<Self>

pub fn from_str_radix(s: &str, radix: u32) -> Result<Self>

impl Decimal

pub const MAX_PRECISION: u8 = 28u8

pub fn scale(&self) -> Option<i32>

pub fn rescale(&mut self, scale: u32)

pub fn round_dp_ties_away(&self, dp: u32) -> Self

pub fn round_left_ties_away(&self, left: u32) -> Option<Self>

Round to the left of the decimal point, for example 31.5 -> 30.

pub fn ceil(&self) -> Self

pub fn floor(&self) -> Self

pub fn trunc(&self) -> Self

pub fn round_ties_even(&self) -> Self

pub fn from_i128_with_scale(num: i128, scale: u32) -> Self

pub fn normalize(&self) -> Self

pub fn unordered_serialize(&self) -> [u8; 16]

pub fn unordered_deserialize(bytes: [u8; 16]) -> Self

pub fn abs(&self) -> Self

pub fn sign(&self) -> Self

pub fn checked_exp(&self) -> Option<Decimal>

pub fn checked_ln(&self) -> Option<Decimal>

pub fn checked_log10(&self) -> Option<Decimal>

pub fn checked_powd(&self, rhs: &Self) -> Result<Self, PowError>

Trait Implementations

impl Add for Decimal

type Output = Decimal

The resulting type after applying the + operator.

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

Performs the + operation.

impl CheckedAdd for Decimal

fn checked_add(&self, other: &Self) -> Option<Self>

Adds two numbers, checking for overflow. If overflow happens, None is returned.

impl CheckedDiv for Decimal

fn checked_div(&self, other: &Self) -> Option<Self>

Divides two numbers, checking for underflow, overflow and division by zero. If any of that happens, None is returned.

impl CheckedMul for Decimal

fn checked_mul(&self, other: &Self) -> Option<Self>

Multiplies two numbers, checking for underflow or overflow. If underflow or overflow happens, None is returned.

impl CheckedNeg for Decimal

fn checked_neg(&self) -> Option<Self>

Negates a number, returning None for results that can’t be represented, like signed MIN values that can’t be positive, or non-zero unsigned values that can’t be negative.

impl CheckedRem for Decimal

fn checked_rem(&self, other: &Self) -> Option<Self>

Finds the remainder of dividing two numbers, checking for underflow, overflow and division by zero. If any of that happens, None is returned.

impl CheckedSub for Decimal

fn checked_sub(&self, other: &Self) -> Option<Self>

Subtracts two numbers, checking for underflow. If underflow happens, None is returned.

impl Clone for Decimal

fn clone(&self) -> Decimal

Returns a copy 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

Formats the value using the given formatter.

impl Default for Decimal

fn default() -> Self

Returns the “default value” for a type.

impl Display for Decimal

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

Formats the value using the given formatter.

impl Div for Decimal

type Output = Decimal

The resulting type after applying the / operator.

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

Performs the / operation.

impl From<Decimal> for Decimal

fn from(d: Decimal) -> Self

Converts to this type from the input type.

impl From<Decimal> for Decimal

fn from(d: Decimal) -> Self

Converts to this type from the input type.

impl From<Decimal> for Decimal

fn from(d: RustDecimal) -> Self

Converts to this type from the input type.

impl From<Decimal> for ScalarImpl

fn from(val: Decimal) -> Self

Converts to this type from the input type.

impl<'scalar> From<Decimal> for ScalarRefImpl<'scalar>

fn from(val: Decimal) -> Self

Converts to this type from the input type.

impl From<i16> for Decimal

fn from(t: i16) -> Self

Converts to this type from the input type.

impl From<i32> for Decimal

fn from(t: i32) -> Self

Converts to this type from the input type.

impl From<i64> for Decimal

fn from(t: i64) -> Self

Converts to this type from the input type.

impl From<i8> for Decimal

fn from(t: i8) -> Self

Converts to this type from the input type.

impl From<isize> for Decimal

fn from(t: isize) -> Self

Converts to this type from the input type.

impl From<u16> for Decimal

fn from(t: u16) -> Self

Converts to this type from the input type.

impl From<u32> for Decimal

fn from(t: u32) -> Self

Converts to this type from the input type.

impl From<u64> for Decimal

fn from(t: u64) -> Self

Converts to this type from the input type.

impl From<u8> for Decimal

fn from(t: u8) -> Self

Converts to this type from the input type.

impl From<usize> for Decimal

fn from(t: usize) -> Self

Converts to this type from the input type.

impl<'a> FromSql<'a> for Decimal

fn from_sql( ty: &Type, raw: &'a [u8], ) -> Result<Self, Box<dyn Error + Sync + Send + 'static>>

Creates a new value of this type from a buffer of data of the specified Postgres Type in its binary format.

fn accepts(ty: &Type) -> bool

Determines if a value of this type can be created from the specified Postgres Type.

fn from_sql_null(ty: &Type) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a NULL SQL value.

fn from_sql_nullable( ty: &Type, raw: Option<&'a [u8]>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A convenience function that delegates to from_sql and from_sql_null depending on the value of raw.

impl FromStr for Decimal

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for Decimal

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 HashKeyDe for Decimal

fn deserialize(_data_type: &DataType, buf: impl Buf) -> Self

impl HashKeySer<'_> for Decimal

fn serialize_into(self, buf: impl BufMut)

Serialize the scalar into the given buffer.

fn exact_size() -> Option<usize>

Returns Some if the serialized size is known for this scalar type.

fn estimated_size(self) -> usize

Returns the estimated serialized size for this scalar.

impl Mul for Decimal

type Output = Decimal

The resulting type after applying the * operator.

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

Performs the * operation.

impl Neg for Decimal

type Output = Decimal

The resulting type after applying the - operator.

fn neg(self) -> Self

Performs the unary - operation.

impl Num for Decimal

type FromStrRadixErr = Error

fn from_str_radix(str: &str, radix: u32) -> Result<Self, Self::FromStrRadixErr>

Convert from a string and radix (typically 2..=36).

impl One for Decimal

fn one() -> Self

Returns the multiplicative identity element of Self, 1.

fn set_one(&mut self)

Sets self to the multiplicative identity element of Self, 1.

fn is_one(&self) -> bool

where Self: PartialEq,

Returns true if self is equal to the multiplicative identity.

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 PrimitiveArrayItemType for Decimal

const DATA_TYPE: DataType = DataType::Decimal

The data type.

fn erase_array_type(arr: PrimitiveArray<Self>) -> ArrayImpl

A helper to convert a primitive array to ArrayImpl.

fn try_into_array(arr: ArrayImpl) -> Option<PrimitiveArray<Self>>

A helper to convert ArrayImpl to self.

fn try_into_array_ref(arr: &ArrayImpl) -> Option<&PrimitiveArray<Self>>

A helper to convert ArrayImpl to self.

fn array_type() -> ArrayType

Returns array type of the primitive array

fn to_protobuf<T: Write>(self, output: &mut T) -> ArrayResult<usize>

fn from_protobuf(cur: &mut Cursor<&[u8]>) -> ArrayResult<Self>

impl RandValue for Decimal

fn rand_value<R: Rng>(rand: &mut R) -> Self

impl Rem for Decimal

type Output = Decimal

The resulting type after applying the % operator.

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

Performs the % operation.

impl Scalar for Decimal

Implement Scalar for Decimal.

type ScalarRefType<'a> = Decimal

Type for reference of Scalar

fn as_scalar_ref(&self) -> Decimal

Get a reference to current scalar.

fn to_scalar_value(self) -> ScalarImpl

impl ScalarRef<'_> for Decimal

Implement ScalarRef for Decimal.

type ScalarType = Decimal

ScalarType is the owned type of current ScalarRef.

fn to_owned_scalar(&self) -> Decimal

Convert ScalarRef to an owned scalar.

fn hash_scalar<H: Hasher>(&self, state: &mut H)

A wrapped hash function to get the hash value for this scaler.

impl Sub for Decimal

type Output = Decimal

The resulting type after applying the - operator.

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

Performs the - operation.

impl ToBinary for Decimal

fn to_binary_with_type(&self, ty: &DataType) -> Result<Bytes, ToBinaryError>

impl ToSql for Decimal

fn accepts(ty: &Type) -> bool

Determines if a value of this type can be converted to the specified Postgres Type.

fn to_sql_checked( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

An adaptor method used internally by Rust-Postgres.

fn to_sql( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Converts the value of self into the binary format of the specified Postgres Type, appending it to out.

fn encode_format(&self, _ty: &Type) -> Format

Specify the encode format

impl ToText for Decimal

fn write<W: Write>(&self, f: &mut W) -> Result

Write the text to the writer regardless of its data type

fn write_with_type<W: Write>(&self, ty: &DataType, f: &mut W) -> Result

Write the text to the writer according to its data type

fn to_text_with_type(&self, ty: &DataType) -> String

Convert to text according to its data type

fn to_text(&self) -> String

to_text is a special version of to_text_with_type, it convert the scalar to default type text. E.g. for Int64, it will convert to text as a Int64 type. We should prefer to use to_text_with_type because it’s more clear and readable.

impl TryFrom<Decimal> for OrderedFloat<f32>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for OrderedFloat<f64>

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for f32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for f64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for i16

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for i32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for i64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for i8

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for isize

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for u16

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for u32

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for u64

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for u8

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Decimal> for usize

type Error = Error

The type returned in the event of a conversion error.

fn try_from(d: Decimal) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OrderedFloat<f32>> for Decimal

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: OrderedFloat<f32>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<OrderedFloat<f64>> for Decimal

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: OrderedFloat<f64>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ScalarImpl> for Decimal

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarImpl) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Decimal

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl TryFrom<f32> for Decimal

type Error = Error

The type returned in the event of a conversion error.

fn try_from(num: f32) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<f64> for Decimal

type Error = Error

The type returned in the event of a conversion error.

fn try_from(num: f64) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> WithDataType for &'a Decimal

fn default_data_type() -> DataType

Returns the most obvious DataType for the rust type.

impl<'a> WithDataType for &'a mut Decimal

fn default_data_type() -> DataType

Returns the most obvious DataType for the rust type.

impl WithDataType for Box<Decimal>

fn default_data_type() -> DataType

Returns the most obvious DataType for the rust type.

impl WithDataType for Decimal

fn default_data_type() -> DataType

Returns the most obvious DataType for the rust type.

impl Zero for Decimal

fn zero() -> Self

Returns the additive identity element of Self, 0.

fn is_zero(&self) -> bool

Returns true if self is equal to the additive identity.

fn set_zero(&mut self)

Sets self to the additive identity element of Self, 0.

impl Copy for Decimal

impl Eq for Decimal

impl StructuralPartialEq for Decimal

impl ZeroHeapSize for Decimal