Add support for cubic yards

README.md

@@ -65,6 +65,7 @@ Supported units
 
 * cubic inch (in³)
 * cubic foot (ft³)
+* cubic yard (yd³)
 
 ### Imperial fluid volume units
 

src/conversions.rs

@@ -117,6 +117,11 @@ fn get_conversion(unit: NonMetric) -> Conversion {
 			from: inch_from * inch_from * inch_from,
 			to: MetricQuantity { amount: 12.0 * inch_to * 12.0 * inch_to * 12.0 * inch_to, unit: Metric::CubicMetre },
 		},
+		NonMetric::CubicYard => Conversion {
+			offset: 0.0,
+			from: inch_from * inch_from * inch_from,
+			to: MetricQuantity { amount: 3.0 * 12.0 * inch_to * 3.0 * 12.0 * inch_to * 3.0 * 12.0 * inch_to, unit: Metric::CubicMetre },
+		},
 		// Fluid volume
 		NonMetric::ImperialFluidOunce => Conversion {
 			offset: 0.0,
@@ -240,6 +245,7 @@ mod test {
 		let tests = [
 			Test(NonMetric::CubicInch, 1.6387064e-5),
 			Test(NonMetric::CubicFoot, 0.028316846592),
+			Test(NonMetric::CubicYard, 0.764554857984),
 		];
 		run_tests(&tests, Metric::CubicMetre);
 	}

src/lib.rs

@@ -90,6 +90,7 @@ fn unit_to_name(unit: NonMetric) -> &'static str {
 		// Volume
 		NonMetric::CubicInch => "cubic inches",
 		NonMetric::CubicFoot => "cubic feet",
+		NonMetric::CubicYard => "cubic yards",
 		// Fluid volume
 		NonMetric::ImperialFluidOunce => "imperial fluid ounces",
 		NonMetric::ImperialPint => "imperial pints",
@@ -147,6 +148,7 @@ mod test {
 		// Volume
 		assert_eq!(run("1 in³"), Ok("16.39 cm³".to_string()));
 		assert_eq!(run("1 ft³"), Ok("28 317 cm³".to_string()));
+		assert_eq!(run("1 yd³"), Ok("764 555 cm³".to_string()));
 		// Fluid volume
 		assert_eq!(run("1 imp fl oz"), Ok("2.841 cl".to_string()));
 		assert_eq!(run("1 imp pt"), Ok("5.683 dl".to_string()));

src/parse.rs

@@ -213,6 +213,19 @@ fn parse_unit(input: String) -> Result<NonMetric, ParseError> {
 		"feet^3" => Ok(NonMetric::CubicFoot),
 		"ft^3" => Ok(NonMetric::CubicFoot),
 
+		"cubic yard" => Ok(NonMetric::CubicYard),
+		"cubic yards" => Ok(NonMetric::CubicYard),
+		"cubic yd" => Ok(NonMetric::CubicYard),
+		"cu yard" => Ok(NonMetric::CubicYard),
+		"cu yards" => Ok(NonMetric::CubicYard),
+		"cu yd" => Ok(NonMetric::CubicYard),
+		"yard³" => Ok(NonMetric::CubicYard),
+		"yards³" => Ok(NonMetric::CubicYard),
+		"yd³" => Ok(NonMetric::CubicYard),
+		"yard^3" => Ok(NonMetric::CubicYard),
+		"yards^3" => Ok(NonMetric::CubicYard),
+		"yd^3" => Ok(NonMetric::CubicYard),
+
 		// Fluid volume
 		"imperial fluid ounce" => Ok(NonMetric::ImperialFluidOunce),
 		"imperial fluid ounces" => Ok(NonMetric::ImperialFluidOunce),
@@ -630,6 +643,21 @@ mod test {
 			"ft^3",
 		]);
 
+		test_units(NonMetric::CubicYard, &[
+			"cubic yard",
+			"cubic yards",
+			"cubic yd",
+			"cu yard",
+			"cu yards",
+			"cu yd",
+			"yard³",
+			"yards³",
+			"yd³",
+			"yard^3",
+			"yards^3",
+			"yd^3",
+		]);
+
 		// Fluid volume
 		test_units(NonMetric::ImperialFluidOunce, &[
 			"imperial fluid ounce",

src/units.rs

@@ -32,6 +32,7 @@ pub enum NonMetric {
 	// Volume
 	CubicInch,
 	CubicFoot,
+	CubicYard,
 	// Fluid volume
 	ImperialFluidOunce,
 	ImperialPint,