CPC/src/units.rs

423 lines
19 KiB
Rust

use decimal::d128;
#[derive(Clone, Copy, PartialEq, Debug)]
pub enum UnitType {
NoUnit,
Time,
Length,
Area,
Volume,
Mass,
Information,
Energy,
Power,
Pressure,
Speed,
Temperature,
}
use UnitType::*;
macro_rules! create_units {
( $( $variant:ident : $properties:expr ),*, ) => {
#[derive(Clone, Copy, PartialEq, Debug)]
pub enum Unit {
$($variant),*
}
use Unit::*;
impl Unit {
pub fn category(&self) -> UnitType {
match self {
$(
Unit::$variant => $properties.0
),*
}
}
pub fn weight(&self) -> d128 {
match self {
$(
Unit::$variant => $properties.1
),*
}
}
}
}
}
create_units!(
NoUnit: (UnitType::NoUnit, d128!(1)),
Nanosecond: (Time, d128!(1)),
Microsecond: (Time, d128!(1000)),
Millisecond: (Time, d128!(1000000)),
Second: (Time, d128!(1000000000)),
Minute: (Time, d128!(60000000000)),
Hour: (Time, d128!(3600000000000)),
Day: (Time, d128!(86400000000000)),
Week: (Time, d128!(604800000000000)),
Month: (Time, d128!(2629746000000000)),
Quarter: (Time, d128!(7889238000000000)),
Year: (Time, d128!(31556952000000000)),
Decade: (Time, d128!(315569520000000000)),
Century: (Time, d128!(3155695200000000000)),
Millenium: (Time, d128!(31556952000000000000)),
Millimeter: (Length, d128!(1)),
Centimeter: (Length, d128!(10)),
Decimeter: (Length, d128!(100)),
Meter: (Length, d128!(1000)),
Kilometer: (Length, d128!(1000000)),
Inch: (Length, d128!(25.4)),
Foot: (Length, d128!(304.8)),
Yard: (Length, d128!(914.4)),
Mile: (Length, d128!(1609344)),
// 1-dimensional only:
NauticalMile: (Length, d128!(1852000)),
LightYear: (Length, d128!(9460730472580800000)),
LightSecond: (Length, d128!(299792458000)),
SquareMillimeter: (Area, d128!(1)),
SquareCentimeter: (Area, d128!(100)),
SquareDecimeter: (Area, d128!(10000)),
SquareMeter: (Area, d128!(1000000)),
SquareKilometer: (Area, d128!(1000000000000)),
SquareInch: (Area, d128!(645.16)),
SquareFoot: (Area, d128!(92903.04)),
SquareYard: (Area, d128!(836127.36)),
SquareMile: (Area, d128!(2589988110336.00)),
// 2-dimensional only
Are: (Area, d128!(100000000)),
Decare: (Area, d128!(1000000000)),
Hectare: (Area, d128!(10000000000)),
Acre: (Area, d128!(4046856422.40)),
CubicMillimeter: (Volume, d128!(1)),
CubicCentimeter: (Volume, d128!(1000)),
CubicDecimeter: (Volume, d128!(1000000)),
CubicMeter: (Volume, d128!(1000000000)),
CubicKilometer: (Volume, d128!(1000000000000000000)),
CubicInch: (Volume, d128!(16387.064)),
CubicFoot: (Volume, d128!(28316846.592)),
CubicYard: (Volume, d128!(764554857.984)),
CubicMile: (Volume, d128!(4168181825440579584)),
// 3-dimensional only
Milliliter: (Volume, d128!(1000)),
Centiliter: (Volume, d128!(10000)),
Deciliter: (Volume, d128!(100000)),
Liter: (Volume, d128!(1000000)),
Teaspoon: (Volume, d128!(4928.92159375)),
Tablespoon: (Volume, d128!(14786.76478125)),
FluidOunce: (Volume, d128!(29573.5295625)),
Cup: (Volume, d128!(236588.2365)),
Pint: (Volume, d128!(473176.473)),
Quart: (Volume, d128!(946352.946)),
Gallon: (Volume, d128!(3785411.784)),
OilBarrel: (Volume, d128!(158987294.928)),
Milligram: (Mass, d128!(0.001)),
Gram: (Mass, d128!(1)),
Hectogram: (Mass, d128!(100)),
Kilogram: (Mass, d128!(1000)),
MetricTon: (Mass, d128!(1000000)),
Ounce: (Mass, d128!(28.349523125)),
Pound: (Mass, d128!(453.59237)),
ShortTon: (Mass, d128!(907184.74)),
LongTon: (Mass, d128!(1016046.9088)),
Bit: (Information, d128!(1)),
Kilobit: (Information, d128!(1000)),
Megabit: (Information, d128!(1000000)),
Gigabit: (Information, d128!(1000000000)),
Terabit: (Information, d128!(1000000000000)),
Petabit: (Information, d128!(1000000000000000)),
Exabit: (Information, d128!(1000000000000000000)),
Zettabit: (Information, d128!(1000000000000000000000)),
Yottabit: (Information, d128!(1000000000000000000000000)),
Kibibit: (Information, d128!(1024)),
Mebibit: (Information, d128!(1048576)),
Gibibit: (Information, d128!(1073741824)),
Tebibit: (Information, d128!(1099511627776)),
Pebibit: (Information, d128!(1125899906842624)),
Exbibit: (Information, d128!(1152921504606846976)),
Zebibit: (Information, d128!(1180591620717411303424)),
Yobibit: (Information, d128!(1208925819614629174706176)),
Byte: (Information, d128!(8)),
Kilobyte: (Information, d128!(8000)),
Megabyte: (Information, d128!(8000000)),
Gigabyte: (Information, d128!(8000000000)),
Terabyte: (Information, d128!(8000000000000)),
Petabyte: (Information, d128!(8000000000000000)),
Exabyte: (Information, d128!(8000000000000000000)),
Zettabyte: (Information, d128!(8000000000000000000000)),
Yottabyte: (Information, d128!(8000000000000000000000000)),
Kibibyte: (Information, d128!(8192)),
Mebibyte: (Information, d128!(8388608)),
Gibibyte: (Information, d128!(8589934592)),
Tebibyte: (Information, d128!(8796093022208)),
Pebibyte: (Information, d128!(9007199254740992)),
Exbibyte: (Information, d128!(9223372036854775808)),
Zebibyte: (Information, d128!(9444732965739290427392)),
Yobibyte: (Information, d128!(9671406556917033397649408)),
Millijoule: (Energy, d128!(0.001)),
Joule: (Energy, d128!(1)),
NewtonMeter: (Energy, d128!(1)),
Kilojoule: (Energy, d128!(1000)),
Megajoule: (Energy, d128!(1000000)),
Gigajoule: (Energy, d128!(1000000000)),
Terajoule: (Energy, d128!(1000000000000)),
Calorie: (Energy, d128!(4.1868)),
KiloCalorie: (Energy, d128!(4186.8)),
BritishThermalUnit: (Energy, d128!(1055.05585262)),
WattHour: (Energy, d128!(3600)),
KilowattHour: (Energy, d128!(3600000)),
MegawattHour: (Energy, d128!(3600000000)),
GigawattHour: (Energy, d128!(3600000000000)),
TerawattHour: (Energy, d128!(3600000000000000)),
PetawattHour: (Energy, d128!(3600000000000000000)),
Milliwatt: (Power, d128!(0.001)),
Watt: (Power, d128!(1)),
Kilowatt: (Power, d128!(1000)),
Megawatt: (Power, d128!(1000000)),
Gigawatt: (Power, d128!(1000000000)),
Terawatt: (Power, d128!(1000000000000)),
Petawatt: (Power, d128!(1000000000000000)),
BritishThermalUnitsPerMinute: (Power, d128!(0.0568690272188)), // probably inexact
BritishThermalUnitsPerHour: (Power, d128!(3.412141633128)), // probably inexact
Horsepower: (Power, d128!(745.69987158227022)), // exact according to wikipedia
MetricHorsepower: (Power, d128!(735.49875)),
Pascal: (Pressure, d128!(1)),
Kilopascal: (Pressure, d128!(1000)),
Atmosphere: (Pressure, d128!(101325)),
Millibar: (Pressure, d128!(100)),
Bar: (Pressure, d128!(100000)),
InchOfMercury: (Pressure, d128!(3386.389)),
PoundsPerSquareInch: (Pressure, d128!(6894.757293168361)), // inexact
Torr: (Pressure, d128!(162.12)),
KilometersPerHour: (Speed, d128!(1)),
MetersPerSecond: (Speed, d128!(3.6)),
MilesPerHour: (Speed, d128!(1.609344)),
FeetPerSecond: (Speed, d128!(1.09728)),
Knot: (Speed, d128!(1.852)),
Kelvin: (Temperature, d128!(0)),
Celcius: (Temperature, d128!(0)),
Fahrenheit: (Temperature, d128!(0)),
);
#[derive(Clone, Debug)]
pub struct Number {
pub value: d128,
pub unit: Unit,
}
impl Number {
pub fn new(value: d128, unit: Unit) -> Number {
Number {
value: value,
unit: unit,
}
}
}
fn get_convertion_factor(unit: Unit, to_unit: Unit) -> d128 {
return unit.weight() / to_unit.weight();
}
pub fn convert(number: Number, to_unit: Unit) -> Result<Number, String> {
let value = number.value;
let ok = |new_value| {
Ok(Number::new(new_value, to_unit))
};
if number.unit.category() == UnitType::Temperature {
match (number.unit, to_unit) {
(Kelvin, Kelvin) => ok(value),
(Kelvin, Celcius) => ok(value-d128!(273.15)),
(Kelvin, Fahrenheit) => ok(value*d128!(1.8)-d128!(459.67)),
(Celcius, Celcius) => ok(value),
(Celcius, Kelvin) => ok(value+d128!(273.15)),
(Celcius, Fahrenheit) => ok(value*d128!(1.8)+d128!(32)),
(Fahrenheit, Fahrenheit) => ok(value),
(Fahrenheit, Kelvin) => ok((value+d128!(459.67))*d128!(5)/d128!(9)),
(Fahrenheit, Celcius) => ok((value-d128!(32))/d128!(1.8)),
_ => Err(format!("Error converting temperature {:?} to {:?}", number.unit, to_unit)),
}
} else {
let convertion_factor = get_convertion_factor(number.unit, to_unit);
ok(number.value * convertion_factor)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_convert() {
pub fn convert_test(value: f64, unit: Unit, to_unit: Unit) -> f64 {
use std::str::FromStr;
let value_string = &value.to_string();
let value_d128 = d128::from_str(value_string).unwrap();
let number = Number::new(value_d128, unit);
let result = convert(number, to_unit);
let string_result = &result.unwrap().value.to_string();
let float_result = f64::from_str(string_result).unwrap();
return float_result;
}
assert_eq!(convert_test(1000.0, Nanosecond, Microsecond), 1.0);
assert_eq!(convert_test(1000.0, Nanosecond, Microsecond), 1.0);
assert_eq!(convert_test(1000.0, Microsecond, Millisecond), 1.0);
assert_eq!(convert_test(1000.0, Millisecond, Second), 1.0);
assert_eq!(convert_test(60.0, Second, Minute), 1.0);
assert_eq!(convert_test(60.0, Minute, Hour), 1.0);
assert_eq!(convert_test(24.0, Hour, Day), 1.0);
assert_eq!(convert_test(7.0, Day, Week), 1.0);
assert_eq!(convert_test(30.436875, Day, Month), 1.0);
assert_eq!(convert_test(3.0, Month, Quarter), 1.0);
assert_eq!(convert_test(4.0, Quarter, Year), 1.0);
assert_eq!(convert_test(10.0, Year, Decade), 1.0);
assert_eq!(convert_test(10.0, Decade, Century), 1.0);
assert_eq!(convert_test(10.0, Century, Millenium), 1.0);
assert_eq!(convert_test(10.0, Millimeter, Centimeter), 1.0);
assert_eq!(convert_test(10.0, Centimeter, Decimeter), 1.0);
assert_eq!(convert_test(10.0, Decimeter, Meter), 1.0);
assert_eq!(convert_test(1000.0, Meter, Kilometer), 1.0);
assert_eq!(convert_test(2.54, Centimeter, Inch), 1.0);
assert_eq!(convert_test(12.0, Inch, Foot), 1.0);
assert_eq!(convert_test(3.0, Foot, Yard), 1.0);
assert_eq!(convert_test(1760.0, Yard, Mile), 1.0);
assert_eq!(convert_test(1852.0, Meter, NauticalMile), 1.0);
assert_eq!(convert_test(9460730472580800.0, Meter, LightYear), 1.0);
assert_eq!(convert_test(299792458.0, Meter, LightSecond), 1.0);
assert_eq!(convert_test(100.0, SquareMillimeter, SquareCentimeter), 1.0);
assert_eq!(convert_test(100.0, SquareCentimeter, SquareDecimeter), 1.0);
assert_eq!(convert_test(100.0, SquareDecimeter, SquareMeter), 1.0);
assert_eq!(convert_test(1000000.0, SquareMeter, SquareKilometer), 1.0);
assert_eq!(convert_test(645.16, SquareMillimeter, SquareInch), 1.0);
assert_eq!(convert_test(144.0, SquareInch, SquareFoot), 1.0);
assert_eq!(convert_test(9.0, SquareFoot, SquareYard), 1.0);
assert_eq!(convert_test(3097600.0, SquareYard, SquareMile), 1.0);
assert_eq!(convert_test(100.0, SquareMeter, Are), 1.0);
assert_eq!(convert_test(10.0, Are, Decare), 1.0);
assert_eq!(convert_test(10.0, Decare, Hectare), 1.0);
assert_eq!(convert_test(640.0, Acre, SquareMile), 1.0);
assert_eq!(convert_test(1000.0, CubicMillimeter, CubicCentimeter), 1.0);
assert_eq!(convert_test(1000.0, CubicCentimeter, CubicDecimeter), 1.0);
assert_eq!(convert_test(1000.0, CubicDecimeter, CubicMeter), 1.0);
assert_eq!(convert_test(1000000000.0, CubicMeter, CubicKilometer), 1.0);
assert_eq!(convert_test(1728.0, CubicInch, CubicFoot), 1.0);
assert_eq!(convert_test(27.0, CubicFoot, CubicYard), 1.0);
assert_eq!(convert_test(5451776000.0, CubicYard, CubicMile), 1.0);
assert_eq!(convert_test(1.0, Milliliter, CubicCentimeter), 1.0);
assert_eq!(convert_test(10.0, Milliliter, Centiliter), 1.0);
assert_eq!(convert_test(10.0, Centiliter, Deciliter), 1.0);
assert_eq!(convert_test(10.0, Deciliter, Liter), 1.0);
assert_eq!(convert_test(4.92892159375, Milliliter, Teaspoon), 1.0);
assert_eq!(convert_test(3.0, Teaspoon, Tablespoon), 1.0);
assert_eq!(convert_test(2.0, Tablespoon, FluidOunce), 1.0);
assert_eq!(convert_test(8.0, FluidOunce, Cup), 1.0);
assert_eq!(convert_test(2.0, Cup, Pint), 1.0);
assert_eq!(convert_test(2.0, Pint, Quart), 1.0);
assert_eq!(convert_test(4.0, Quart, Gallon), 1.0);
assert_eq!(convert_test(42.0, Gallon, OilBarrel), 1.0);
assert_eq!(convert_test(1000.0, Milligram, Gram), 1.0);
assert_eq!(convert_test(100.0, Gram, Hectogram), 1.0);
assert_eq!(convert_test(1000.0, Gram, Kilogram), 1.0);
assert_eq!(convert_test(1000.0, Kilogram, MetricTon), 1.0);
assert_eq!(convert_test(0.45359237, Kilogram, Pound), 1.0);
assert_eq!(convert_test(16.0, Ounce, Pound), 1.0);
assert_eq!(convert_test(2000.0, Pound, ShortTon), 1.0);
assert_eq!(convert_test(2240.0, Pound, LongTon), 1.0);
assert_eq!(convert_test(1000.0, Bit, Kilobit), 1.0);
assert_eq!(convert_test(1000.0, Kilobit, Megabit), 1.0);
assert_eq!(convert_test(1000.0, Megabit, Gigabit), 1.0);
assert_eq!(convert_test(1000.0, Gigabit, Terabit), 1.0);
assert_eq!(convert_test(1000.0, Terabit, Petabit), 1.0);
assert_eq!(convert_test(1000.0, Petabit, Exabit), 1.0);
assert_eq!(convert_test(1000.0, Exabit, Zettabit), 1.0);
assert_eq!(convert_test(1000.0, Zettabit, Yottabit), 1.0);
assert_eq!(convert_test(1024.0, Bit, Kibibit), 1.0);
assert_eq!(convert_test(1024.0, Kibibit, Mebibit), 1.0);
assert_eq!(convert_test(1024.0, Mebibit, Gibibit), 1.0);
assert_eq!(convert_test(1024.0, Gibibit, Tebibit), 1.0);
assert_eq!(convert_test(1024.0, Tebibit, Pebibit), 1.0);
assert_eq!(convert_test(1024.0, Pebibit, Exbibit), 1.0);
assert_eq!(convert_test(1024.0, Exbibit, Zebibit), 1.0);
assert_eq!(convert_test(1024.0, Zebibit, Yobibit), 1.0);
assert_eq!(convert_test(8.0, Bit, Byte), 1.0);
assert_eq!(convert_test(1000.0, Byte, Kilobyte), 1.0);
assert_eq!(convert_test(1000.0, Kilobyte, Megabyte), 1.0);
assert_eq!(convert_test(1000.0, Megabyte, Gigabyte), 1.0);
assert_eq!(convert_test(1000.0, Gigabyte, Terabyte), 1.0);
assert_eq!(convert_test(1000.0, Terabyte, Petabyte), 1.0);
assert_eq!(convert_test(1000.0, Petabyte, Exabyte), 1.0);
assert_eq!(convert_test(1000.0, Exabyte, Zettabyte), 1.0);
assert_eq!(convert_test(1000.0, Zettabyte, Yottabyte), 1.0);
assert_eq!(convert_test(1024.0, Kibibyte, Mebibyte), 1.0);
assert_eq!(convert_test(1024.0, Mebibyte, Gibibyte), 1.0);
assert_eq!(convert_test(1024.0, Gibibyte, Tebibyte), 1.0);
assert_eq!(convert_test(1024.0, Tebibyte, Pebibyte), 1.0);
assert_eq!(convert_test(1024.0, Pebibyte, Exbibyte), 1.0);
assert_eq!(convert_test(1024.0, Exbibyte, Zebibyte), 1.0);
assert_eq!(convert_test(1024.0, Zebibyte, Yobibyte), 1.0);
assert_eq!(convert_test(1000.0, Millijoule, Joule), 1.0);
assert_eq!(convert_test(1000.0, Joule, Kilojoule), 1.0);
assert_eq!(convert_test(1.0, NewtonMeter, Joule), 1.0);
assert_eq!(convert_test(1000.0, Kilojoule, Megajoule), 1.0);
assert_eq!(convert_test(1000.0, Megajoule, Gigajoule), 1.0);
assert_eq!(convert_test(1000.0, Gigajoule, Terajoule), 1.0);
assert_eq!(convert_test(4.1868, Joule, Calorie), 1.0);
assert_eq!(convert_test(1000.0, Calorie, KiloCalorie), 1.0);
assert_eq!(convert_test(1055.05585262, Joule, BritishThermalUnit), 1.0);
assert_eq!(convert_test(3600.0, Joule, WattHour), 1.0);
assert_eq!(convert_test(1000.0, WattHour, KilowattHour), 1.0);
assert_eq!(convert_test(1000.0, KilowattHour, MegawattHour), 1.0);
assert_eq!(convert_test(1000.0, MegawattHour, GigawattHour), 1.0);
assert_eq!(convert_test(1000.0, GigawattHour, TerawattHour), 1.0);
assert_eq!(convert_test(1000.0, TerawattHour, PetawattHour), 1.0);
assert_eq!(convert_test(1000.0, Watt, Kilowatt), 1.0);
assert_eq!(convert_test(1000.0, Kilowatt, Megawatt), 1.0);
assert_eq!(convert_test(1000.0, Megawatt, Gigawatt), 1.0);
assert_eq!(convert_test(1000.0, Gigawatt, Terawatt), 1.0);
assert_eq!(convert_test(1000.0, Terawatt, Petawatt), 1.0);
assert_eq!(convert_test(0.0568690272188, Watt, BritishThermalUnitsPerMinute), 1.0);
assert_eq!(convert_test(60.0, BritishThermalUnitsPerMinute, BritishThermalUnitsPerHour), 1.0);
assert_eq!(convert_test(745.6998715822702, Watt, Horsepower), 1.0);
assert_eq!(convert_test(735.49875, Watt, MetricHorsepower), 1.0);
assert_eq!(convert_test(1000.0, Pascal, Kilopascal), 1.0);
assert_eq!(convert_test(101325.0, Pascal, Atmosphere), 1.0);
assert_eq!(convert_test(100.0, Pascal, Millibar), 1.0);
assert_eq!(convert_test(1000.0, Millibar, Bar), 1.0);
assert_eq!(convert_test(3386.389, Pascal, InchOfMercury), 1.0);
assert_eq!(convert_test(6894.757293168361, Pascal, PoundsPerSquareInch), 1.0);
assert_eq!(convert_test(162.12, Pascal, Torr), 1.0);
assert_eq!(convert_test(3.6, KilometersPerHour, MetersPerSecond), 1.0);
assert_eq!(convert_test(0.3048, MetersPerSecond, FeetPerSecond), 1.0);
assert_eq!(convert_test(1.609344, KilometersPerHour, MilesPerHour), 1.0);
assert_eq!(convert_test(1.852, KilometersPerHour, Knot), 1.0);
assert_eq!(convert_test(274.15, Kelvin, Celcius), 1.0);
assert_eq!(convert_test(300.0, Kelvin, Fahrenheit), 80.33);
assert_eq!(convert_test(-272.15, Celcius, Kelvin), 1.0);
assert_eq!(convert_test(-15.0, Celcius, Fahrenheit), 5.0);
assert_eq!(convert_test(80.33, Fahrenheit, Kelvin), 300.0);
assert_eq!(convert_test(5.0, Fahrenheit, Celcius), -15.0);
}
}