Trait Unit 

pub trait Unit:
    Copy
    + PartialEq
    + Debug
    + 'static {
    type Dim: Dimension;

    const RATIO: f64;
    const SYMBOL: &'static str;
}

Trait implemented by every unit type.

• RATIO is the conversion factor from this unit to the canonical scaling unit of the same dimension. Example: if metres are canonical (Meter::RATIO == 1.0), then kilometres use Kilometer::RATIO == 1000.0 because 1 km = 1000 m.

• SYMBOL is the printable string (e.g. "m" or "km").

• Dim ties the unit to its underlying Dimension.

Invariants

• Implementations should be zero-sized marker types (this crate’s built-in units are unit structs with no fields).
• RATIO should be finite and non-zero.

Required Associated Constants

const RATIO: f64

Unit-to-canonical conversion factor.

const SYMBOL: &'static str

Printable symbol, shown by core::fmt::Display.

Required Associated Types

type Dim: Dimension

Dimension to which this unit belongs.

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.

Implementors

impl Unit for Unitless

const RATIO: f64 = 1f64

const SYMBOL: &'static str = ""

type Dim = Dimensionless

impl Unit for Arcminute

const RATIO: f64 = 0.016666666666666666f64

const SYMBOL: &'static str = "Arcm"

type Dim = Angular

impl Unit for Arcsecond

const RATIO: f64 = 2.7777777777777778E-4f64

const SYMBOL: &'static str = "Arcs"

type Dim = Angular

impl Unit for Degree

const RATIO: f64 = 1f64

const SYMBOL: &'static str = "Deg"

type Dim = Angular

impl Unit for Gradian

const RATIO: f64 = 0.90000000000000002f64

const SYMBOL: &'static str = "Gon"

type Dim = Angular

impl Unit for HourAngle

const RATIO: f64 = 15f64

const SYMBOL: &'static str = "Hms"

type Dim = Angular

impl Unit for MicroArcsecond

const RATIO: f64 = 2.7777777777777777E-10f64

const SYMBOL: &'static str = "μas"

type Dim = Angular

impl Unit for MilliArcsecond

const RATIO: f64 = 2.7777777777777776E-7f64

const SYMBOL: &'static str = "Mas"

type Dim = Angular

impl Unit for Milliradian

const RATIO: f64 = 0.057295779513082325f64

const SYMBOL: &'static str = "mrad"

type Dim = Angular

impl Unit for Radian

const RATIO: f64 = 57.295779513082323f64

const SYMBOL: &'static str = "Rad"

type Dim = Angular

impl Unit for Turn

const RATIO: f64 = 360f64

const SYMBOL: &'static str = "Turn"

type Dim = Angular

impl Unit for EarthEquatorialRadius

const RATIO: f64 = 6378137f64

const SYMBOL: &'static str = "Rearth_eq"

type Dim = Length

impl Unit for EarthPolarRadius

const RATIO: f64 = 6356752.3141999999f64

const SYMBOL: &'static str = "Rearth_p"

type Dim = Length

impl Unit for EarthRadius

const RATIO: f64 = 6371000f64

const SYMBOL: &'static str = "Rearth"

type Dim = Length

impl Unit for JupiterRadius

const RATIO: f64 = 71492000f64

const SYMBOL: &'static str = "Rjup"

type Dim = Length

impl Unit for LunarDistance

const RATIO: f64 = 3.844E+8f64

const SYMBOL: &'static str = "LD"

type Dim = Length

impl Unit for LunarRadius

const RATIO: f64 = 1737400f64

const SYMBOL: &'static str = "Rmoon"

type Dim = Length

impl Unit for SolarDiameter

const RATIO: f64 = 1.3914E+9f64

const SYMBOL: &'static str = "Dsun"

type Dim = Length

impl Unit for SolarRadius

const RATIO: f64 = 6.957E+8f64

const SYMBOL: &'static str = "Rsun"

type Dim = Length

impl Unit for AstronomicalUnit

const RATIO: f64 = 149597870700f64

const SYMBOL: &'static str = "au"

type Dim = Length

impl Unit for Attometer

const RATIO: f64 = 1.0000000000000001E-18f64

const SYMBOL: &'static str = "am"

type Dim = Length

impl Unit for BohrRadius

const RATIO: f64 = 5.2917721090299998E-11f64

const SYMBOL: &'static str = "a0"

type Dim = Length

impl Unit for Centimeter

const RATIO: f64 = 0.01f64

const SYMBOL: &'static str = "cm"

type Dim = Length

impl Unit for Chain

const RATIO: f64 = 20.116800000000001f64

const SYMBOL: &'static str = "ch"

type Dim = Length

impl Unit for ClassicalElectronRadius

const RATIO: f64 = 2.8179403262E-15f64

const SYMBOL: &'static str = "re"

type Dim = Length

impl Unit for Decameter

const RATIO: f64 = 10f64

const SYMBOL: &'static str = "dam"

type Dim = Length

impl Unit for Decimeter

const RATIO: f64 = 0.10000000000000001f64

const SYMBOL: &'static str = "dm"

type Dim = Length

impl Unit for EarthEquatorialCircumference

const RATIO: f64 = 40075017f64

const SYMBOL: &'static str = "Ceq"

type Dim = Length

impl Unit for EarthMeridionalCircumference

const RATIO: f64 = 40007863f64

const SYMBOL: &'static str = "Cmer"

type Dim = Length

impl Unit for ElectronReducedComptonWavelength

const RATIO: f64 = 3.8615926795999998E-13f64

const SYMBOL: &'static str = "lambda_bar_e"

type Dim = Length

impl Unit for Exameter

const RATIO: f64 = 1.0E+18f64

const SYMBOL: &'static str = "Em"

type Dim = Length

impl Unit for Fathom

const RATIO: f64 = 1.8288000000000002f64

const SYMBOL: &'static str = "ftm"

type Dim = Length

impl Unit for Femtometer

const RATIO: f64 = 1.0000000000000001E-15f64

const SYMBOL: &'static str = "fm"

type Dim = Length

impl Unit for Foot

const RATIO: f64 = 0.30480000000000002f64

const SYMBOL: &'static str = "ft"

type Dim = Length

impl Unit for Gigameter

const RATIO: f64 = 1.0E+9f64

const SYMBOL: &'static str = "Gm"

type Dim = Length

impl Unit for Gigaparsec

const RATIO: f64 = 3.0856775814913673E+25f64

const SYMBOL: &'static str = "Gpc"

type Dim = Length

impl Unit for Hectometer

const RATIO: f64 = 100f64

const SYMBOL: &'static str = "hm"

type Dim = Length

impl Unit for Inch

const RATIO: f64 = 0.025399999999999999f64

const SYMBOL: &'static str = "in"

type Dim = Length

impl Unit for Kilometer

const RATIO: f64 = 1000f64

const SYMBOL: &'static str = "Km"

type Dim = Length

impl Unit for Kiloparsec

const RATIO: f64 = 3.0856775814913675E+19f64

const SYMBOL: &'static str = "kpc"

type Dim = Length

impl Unit for LightYear

const RATIO: f64 = 9460730472580800f64

const SYMBOL: &'static str = "ly"

type Dim = Length

impl Unit for Link

const RATIO: f64 = 0.20116800000000001f64

const SYMBOL: &'static str = "lk"

type Dim = Length

impl Unit for Megameter

const RATIO: f64 = 1.0E+6f64

const SYMBOL: &'static str = "Mm"

type Dim = Length

impl Unit for Megaparsec

const RATIO: f64 = 3.0856775814913672E+22f64

const SYMBOL: &'static str = "Mpc"

type Dim = Length

impl Unit for Meter

const RATIO: f64 = 1f64

const SYMBOL: &'static str = "m"

type Dim = Length

impl Unit for Micrometer

const RATIO: f64 = 9.9999999999999995E-7f64

const SYMBOL: &'static str = "um"

type Dim = Length

impl Unit for Mile

const RATIO: f64 = 1609.3440000000001f64

const SYMBOL: &'static str = "mi"

type Dim = Length

impl Unit for Millimeter

const RATIO: f64 = 0.001f64

const SYMBOL: &'static str = "mm"

type Dim = Length

impl Unit for Nanometer

const RATIO: f64 = 1.0000000000000001E-9f64

const SYMBOL: &'static str = "nm"

type Dim = Length

impl Unit for NauticalMile

const RATIO: f64 = 1852f64

const SYMBOL: &'static str = "nmi"

type Dim = Length

impl Unit for Parsec

const RATIO: f64 = 30856775814913672f64

const SYMBOL: &'static str = "pc"

type Dim = Length

impl Unit for Petameter

const RATIO: f64 = 1.0E+15f64

const SYMBOL: &'static str = "Pm"

type Dim = Length

impl Unit for Picometer

const RATIO: f64 = 9.9999999999999998E-13f64

const SYMBOL: &'static str = "pm"

type Dim = Length

impl Unit for PlanckLength

const RATIO: f64 = 1.6162550000000001E-35f64

const SYMBOL: &'static str = "lp"

type Dim = Length

impl Unit for Rod

const RATIO: f64 = 5.0292000000000003f64

const SYMBOL: &'static str = "rd"

type Dim = Length

impl Unit for Terameter

const RATIO: f64 = 1.0E+12f64

const SYMBOL: &'static str = "Tm"

type Dim = Length

impl Unit for Yard

const RATIO: f64 = 0.91439999999999999f64

const SYMBOL: &'static str = "yd"

type Dim = Length

impl Unit for Yoctometer

const RATIO: f64 = 9.9999999999999992E-25f64

const SYMBOL: &'static str = "ym"

type Dim = Length

impl Unit for Yottameter

const RATIO: f64 = 9.9999999999999998E+23f64

const SYMBOL: &'static str = "Ym"

type Dim = Length

impl Unit for Zeptometer

const RATIO: f64 = 9.9999999999999991E-22f64

const SYMBOL: &'static str = "zm"

type Dim = Length

impl Unit for Zettameter

const RATIO: f64 = 1.0E+21f64

const SYMBOL: &'static str = "Zm"

type Dim = Length

impl Unit for AtomicMassUnit

const RATIO: f64 = 1.6605390689200001E-24f64

const SYMBOL: &'static str = "u"

type Dim = Mass

impl Unit for Attogram

const RATIO: f64 = 1.0000000000000001E-18f64

const SYMBOL: &'static str = "ag"

type Dim = Mass

impl Unit for Carat

const RATIO: f64 = 0.20000000000000001f64

const SYMBOL: &'static str = "ct"

type Dim = Mass

impl Unit for Centigram

const RATIO: f64 = 0.01f64

const SYMBOL: &'static str = "cg"

type Dim = Mass

impl Unit for Decagram

const RATIO: f64 = 10f64

const SYMBOL: &'static str = "dag"

type Dim = Mass

impl Unit for Decigram

const RATIO: f64 = 0.10000000000000001f64

const SYMBOL: &'static str = "dg"

type Dim = Mass

impl Unit for Exagram

const RATIO: f64 = 1.0E+18f64

const SYMBOL: &'static str = "Eg"

type Dim = Mass

impl Unit for Femtogram

const RATIO: f64 = 1.0000000000000001E-15f64

const SYMBOL: &'static str = "fg"

type Dim = Mass

impl Unit for Gigagram

const RATIO: f64 = 1.0E+9f64

const SYMBOL: &'static str = "Gg"

type Dim = Mass

impl Unit for Grain

const RATIO: f64 = 0.0064798909999999998f64

const SYMBOL: &'static str = "gr"

type Dim = Mass

impl Unit for Gram

const RATIO: f64 = 1f64

const SYMBOL: &'static str = "g"

type Dim = Mass

impl Unit for Hectogram

const RATIO: f64 = 100f64

const SYMBOL: &'static str = "hg"

type Dim = Mass

impl Unit for Kilogram

const RATIO: f64 = 1000f64

const SYMBOL: &'static str = "kg"

type Dim = Mass

impl Unit for LongTon

const RATIO: f64 = 1016046.9088000001f64

const SYMBOL: &'static str = "ton_uk"

type Dim = Mass

impl Unit for Megagram

const RATIO: f64 = 1.0E+6f64

const SYMBOL: &'static str = "Mg"

type Dim = Mass

impl Unit for Microgram

const RATIO: f64 = 9.9999999999999995E-7f64

const SYMBOL: &'static str = "µg"

type Dim = Mass

impl Unit for Milligram

const RATIO: f64 = 0.001f64

const SYMBOL: &'static str = "mg"

type Dim = Mass

impl Unit for Nanogram

const RATIO: f64 = 1.0000000000000001E-9f64

const SYMBOL: &'static str = "ng"

type Dim = Mass

impl Unit for Ounce

const RATIO: f64 = 28.349523125000001f64

const SYMBOL: &'static str = "oz"

type Dim = Mass

impl Unit for Petagram

const RATIO: f64 = 1.0E+15f64

const SYMBOL: &'static str = "Pg"

type Dim = Mass

impl Unit for Picogram

const RATIO: f64 = 9.9999999999999998E-13f64

const SYMBOL: &'static str = "pg"

type Dim = Mass

impl Unit for Pound

const RATIO: f64 = 453.59237000000002f64

const SYMBOL: &'static str = "lb"

type Dim = Mass

impl Unit for ShortTon

const RATIO: f64 = 907184.73999999999f64

const SYMBOL: &'static str = "ton_us"

type Dim = Mass

impl Unit for SolarMass

const RATIO: f64 = 1.9884160000000001E+33f64

const SYMBOL: &'static str = "M☉"

type Dim = Mass

impl Unit for Stone

const RATIO: f64 = 6350.2931800000006f64

const SYMBOL: &'static str = "st"

type Dim = Mass

impl Unit for Teragram

const RATIO: f64 = 1.0E+12f64

const SYMBOL: &'static str = "Tg"

type Dim = Mass

impl Unit for Tonne

const RATIO: f64 = 1.0E+6f64

const SYMBOL: &'static str = "t"

type Dim = Mass

impl Unit for Yoctogram

const RATIO: f64 = 9.9999999999999992E-25f64

const SYMBOL: &'static str = "yg"

type Dim = Mass

impl Unit for Yottagram

const RATIO: f64 = 9.9999999999999998E+23f64

const SYMBOL: &'static str = "Yg"

type Dim = Mass

impl Unit for Zeptogram

const RATIO: f64 = 9.9999999999999991E-22f64

const SYMBOL: &'static str = "zg"

type Dim = Mass

impl Unit for Zettagram

const RATIO: f64 = 1.0E+21f64

const SYMBOL: &'static str = "Zg"

type Dim = Mass

impl Unit for Attowatt

const RATIO: f64 = 1.0000000000000001E-18f64

const SYMBOL: &'static str = "aW"

type Dim = Power

impl Unit for Decawatt

const RATIO: f64 = 10f64

const SYMBOL: &'static str = "daW"

type Dim = Power

impl Unit for Deciwatt

const RATIO: f64 = 0.10000000000000001f64

const SYMBOL: &'static str = "dW"

type Dim = Power

impl Unit for ErgPerSecond

const RATIO: f64 = 9.9999999999999995E-8f64

const SYMBOL: &'static str = "erg/s"

type Dim = Power

impl Unit for Exawatt

const RATIO: f64 = 1.0E+18f64

const SYMBOL: &'static str = "EW"

type Dim = Power

impl Unit for Femtowatt

const RATIO: f64 = 1.0000000000000001E-15f64

const SYMBOL: &'static str = "fW"

type Dim = Power

impl Unit for Gigawatt

const RATIO: f64 = 1.0E+9f64

const SYMBOL: &'static str = "GW"

type Dim = Power

impl Unit for Hectowatt

const RATIO: f64 = 100f64

const SYMBOL: &'static str = "hW"

type Dim = Power

impl Unit for HorsepowerElectric

const RATIO: f64 = 746f64

const SYMBOL: &'static str = "hp_e"

type Dim = Power

impl Unit for HorsepowerMetric

const RATIO: f64 = 735.49874999999997f64

const SYMBOL: &'static str = "PS"

type Dim = Power

impl Unit for Kilowatt

const RATIO: f64 = 1000f64

const SYMBOL: &'static str = "kW"

type Dim = Power

impl Unit for Megawatt

const RATIO: f64 = 1.0E+6f64

const SYMBOL: &'static str = "MW"

type Dim = Power

impl Unit for Microwatt

const RATIO: f64 = 9.9999999999999995E-7f64

const SYMBOL: &'static str = "µW"

type Dim = Power

impl Unit for Milliwatt

const RATIO: f64 = 0.001f64

const SYMBOL: &'static str = "mW"

type Dim = Power

impl Unit for Nanowatt

const RATIO: f64 = 1.0000000000000001E-9f64

const SYMBOL: &'static str = "nW"

type Dim = Power

impl Unit for Petawatt

const RATIO: f64 = 1.0E+15f64

const SYMBOL: &'static str = "PW"

type Dim = Power

impl Unit for Picowatt

const RATIO: f64 = 9.9999999999999998E-13f64

const SYMBOL: &'static str = "pW"

type Dim = Power

impl Unit for SolarLuminosity

const RATIO: f64 = 3.8280000000000001E+26f64

const SYMBOL: &'static str = "L☉"

type Dim = Power

impl Unit for Terawatt

const RATIO: f64 = 1.0E+12f64

const SYMBOL: &'static str = "TW"

type Dim = Power

impl Unit for Watt

const RATIO: f64 = 1f64

const SYMBOL: &'static str = "W"

type Dim = Power

impl Unit for Yoctowatt

const RATIO: f64 = 9.9999999999999992E-25f64

const SYMBOL: &'static str = "yW"

type Dim = Power

impl Unit for Yottawatt

const RATIO: f64 = 9.9999999999999998E+23f64

const SYMBOL: &'static str = "YW"

type Dim = Power

impl Unit for Zeptowatt

const RATIO: f64 = 9.9999999999999991E-22f64

const SYMBOL: &'static str = "zW"

type Dim = Power

impl Unit for Zettawatt

const RATIO: f64 = 1.0E+21f64

const SYMBOL: &'static str = "ZW"

type Dim = Power

impl Unit for Attosecond

const RATIO: f64 = 1.0000000000000001E-18f64

const SYMBOL: &'static str = "as"

type Dim = Time

impl Unit for Centisecond

const RATIO: f64 = 0.01f64

const SYMBOL: &'static str = "cs"

type Dim = Time

impl Unit for Century

const RATIO: f64 = 3155695200f64

const SYMBOL: &'static str = "cent"

type Dim = Time

impl Unit for Day

const RATIO: f64 = 86400f64

const SYMBOL: &'static str = "d"

type Dim = Time

impl Unit for Decade

const RATIO: f64 = 315569520f64

const SYMBOL: &'static str = "dec"

type Dim = Time

impl Unit for Decasecond

const RATIO: f64 = 10f64

const SYMBOL: &'static str = "das"

type Dim = Time

impl Unit for Decisecond

const RATIO: f64 = 0.10000000000000001f64

const SYMBOL: &'static str = "ds"

type Dim = Time

impl Unit for Femtosecond

const RATIO: f64 = 1.0000000000000001E-15f64

const SYMBOL: &'static str = "fs"

type Dim = Time

impl Unit for Fortnight

const RATIO: f64 = 1209600f64

const SYMBOL: &'static str = "fn"

type Dim = Time

impl Unit for Gigasecond

const RATIO: f64 = 1.0E+9f64

const SYMBOL: &'static str = "Gs"

type Dim = Time

impl Unit for Hectosecond

const RATIO: f64 = 100f64

const SYMBOL: &'static str = "hs"

type Dim = Time

impl Unit for Hour

const RATIO: f64 = 3600f64

const SYMBOL: &'static str = "h"

type Dim = Time

impl Unit for JulianCentury

const RATIO: f64 = 3.15576E+9f64

const SYMBOL: &'static str = "JC"

type Dim = Time

impl Unit for JulianYear

const RATIO: f64 = 31557600f64

const SYMBOL: &'static str = "a"

type Dim = Time

impl Unit for Kilosecond

const RATIO: f64 = 1000f64

const SYMBOL: &'static str = "ks"

type Dim = Time

impl Unit for Megasecond

const RATIO: f64 = 1.0E+6f64

const SYMBOL: &'static str = "Ms"

type Dim = Time

impl Unit for Microsecond

const RATIO: f64 = 9.9999999999999995E-7f64

const SYMBOL: &'static str = "µs"

type Dim = Time

impl Unit for Millennium

const RATIO: f64 = 31556952000f64

const SYMBOL: &'static str = "mill"

type Dim = Time

impl Unit for Millisecond

const RATIO: f64 = 0.001f64

const SYMBOL: &'static str = "ms"

type Dim = Time

impl Unit for Minute

const RATIO: f64 = 60f64

const SYMBOL: &'static str = "min"

type Dim = Time

impl Unit for Nanosecond

const RATIO: f64 = 1.0000000000000001E-9f64

const SYMBOL: &'static str = "ns"

type Dim = Time

impl Unit for Picosecond

const RATIO: f64 = 9.9999999999999998E-13f64

const SYMBOL: &'static str = "ps"

type Dim = Time

impl Unit for Second

const RATIO: f64 = 1f64

const SYMBOL: &'static str = "s"

type Dim = Time

impl Unit for SiderealDay

const RATIO: f64 = 86164.090500000006f64

const SYMBOL: &'static str = "sd"

type Dim = Time

impl Unit for SiderealYear

const RATIO: f64 = 31558149.763545599f64

const SYMBOL: &'static str = "syr"

type Dim = Time

impl Unit for SynodicMonth

const RATIO: f64 = 2551442.8032f64

const SYMBOL: &'static str = "synmo"

type Dim = Time

impl Unit for Terasecond

const RATIO: f64 = 1.0E+12f64

const SYMBOL: &'static str = "Ts"

type Dim = Time

impl Unit for Week

const RATIO: f64 = 604800f64

const SYMBOL: &'static str = "wk"

type Dim = Time

impl Unit for Year

const RATIO: f64 = 31556952f64

const SYMBOL: &'static str = "yr"

type Dim = Time

impl<N: Unit, D: Unit> Unit for Per<N, D>

const RATIO: f64

const SYMBOL: &'static str = ""

type Dim = DivDim<<N as Unit>::Dim, <D as Unit>::Dim>