Crate mag

Mag is a library for dealing with physical quantities and units.

Quantities are created by multiplying scalar values by a unit type. These units are named after common abbreviations:

use mag::{length::{ft, m, mi}, time::{h, s}};

let a = 1.0 * ft;
assert_eq!(a.to_string(), "1 ft");

let b = a.to::<m>();
assert_eq!(b.to_string(), "0.3048 m");

let c = 30 * s;
assert_eq!(c.to_string(), "30 s");

let d = 60.0 / s;
assert_eq!(d.to_string(), "60 ㎐");

let e = 55.0 * mi / h;
assert_eq!(e.to_string(), "55 mi/h");

Highlights

• Easy to understand and use
• Performs conversions between units (SI, imperial)
• Units are not discarded when creating quantities
• Fast compile time
• No external dependencies

Alternative

If mag doesn’t fit your needs, you could try the uom crate, which has many more features.

Modules

• length
  Units of length in one dimension.
• mass
  Units of physical mass.
• quan
• temp
  Units of thermodynamic temperature.
• time
  Units of time.

Macros

• declare_unit
  Define a custom unit of measure.
• length_unit
  Define a custom unit of length
• time_unit
  Define a custom unit of time

Structs

• Area
  Two dimensional area.
• Frequency
  Temporal frequency, or rate over time.
• Length
  One dimensional length, distance or range.
• Period
  Period, duration or interval of time.
• Speed
  Quantity of speed.
• Volume
  Three dimensional volume.