Trait ALPFloat

pub trait ALPFloat:
    Sealed
    + Float
    + Display
    + 'static {
    type ALPInt: PrimInt + Display + ToPrimitive;

    const FRACTIONAL_BITS: u8;
    const MAX_EXPONENT: u8;
    const SWEET: Self;
    const F10: &'static [Self];
    const IF10: &'static [Self];

    // Required methods
    fn as_int(self) -> Self::ALPInt;
    fn from_int(n: Self::ALPInt) -> Self;

    // Provided methods
    fn fast_round(self) -> Self { ... }
    fn find_best_exponents(values: &[Self]) -> Exponents { ... }
    fn estimate_encoded_size(
        encoded: &[Self::ALPInt],
        patches: &[Self],
    ) -> usize { ... }
    fn encode(
        values: &[Self],
        exponents: Option<Exponents>,
    ) -> (Exponents, Buffer<Self::ALPInt>, Buffer<u64>, Buffer<Self>) { ... }
    fn encode_single(
        value: Self,
        exponents: Exponents,
    ) -> Result<Self::ALPInt, Self> { ... }
    fn decode(encoded: &[Self::ALPInt], exponents: Exponents) -> Vec<Self> { ... }
    fn decode_buffer(
        encoded: BufferMut<Self::ALPInt>,
        exponents: Exponents,
    ) -> BufferMut<Self> { ... }
    fn decode_single(encoded: Self::ALPInt, exponents: Exponents) -> Self { ... }
    unsafe fn encode_single_unchecked(
        value: Self,
        exponents: Exponents,
    ) -> Self::ALPInt { ... }
}

Required Associated Constants

const FRACTIONAL_BITS: u8

const MAX_EXPONENT: u8

const SWEET: Self

const F10: &'static [Self]

const IF10: &'static [Self]

Required Associated Types

type ALPInt: PrimInt + Display + ToPrimitive

Required Methods

fn as_int(self) -> Self::ALPInt

Equivalent to calling as to cast the primitive float to the target integer type.

fn from_int(n: Self::ALPInt) -> Self

Convert from the integer type back to the float type using as.

Provided Methods

fn fast_round(self) -> Self

Round to the nearest floating integer by shifting in and out of the low precision range.

fn find_best_exponents(values: &[Self]) -> Exponents

fn estimate_encoded_size(encoded: &[Self::ALPInt], patches: &[Self]) -> usize

fn encode( values: &[Self], exponents: Option<Exponents>, ) -> (Exponents, Buffer<Self::ALPInt>, Buffer<u64>, Buffer<Self>)

fn encode_single( value: Self, exponents: Exponents, ) -> Result<Self::ALPInt, Self>

fn decode(encoded: &[Self::ALPInt], exponents: Exponents) -> Vec<Self>

fn decode_buffer( encoded: BufferMut<Self::ALPInt>, exponents: Exponents, ) -> BufferMut<Self>

fn decode_single(encoded: Self::ALPInt, exponents: Exponents) -> Self

unsafe fn encode_single_unchecked( value: Self, exponents: Exponents, ) -> Self::ALPInt

Safety

The returned value may not decode back to the original value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl ALPFloat for f32

const FRACTIONAL_BITS: u8 = 23u8

const MAX_EXPONENT: u8 = 10u8

const SWEET: Self = 12582912f32

const F10: &'static [Self]

const IF10: &'static [Self]

type ALPInt = i32

fn as_int(self) -> Self::ALPInt

fn from_int(n: Self::ALPInt) -> Self

impl ALPFloat for f64

const FRACTIONAL_BITS: u8 = 52u8

const MAX_EXPONENT: u8 = 18u8

const SWEET: Self = 6755399441055744f64

const F10: &'static [Self]

const IF10: &'static [Self]

type ALPInt = i64

fn as_int(self) -> Self::ALPInt

fn from_int(n: Self::ALPInt) -> Self

Implementors