feat(units): add/update units, aliases

thi-ng · Mar 14, 2023 · 850e604 · 850e604
1 parent c7dda99
commit 850e604
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Showing 6 changed files with 34 additions and 3 deletions.
diff --git a/packages/units/src/data.ts b/packages/units/src/data.ts
@@ -6,8 +6,6 @@ export const Mbit = defUnit("Mbit", "megabit", prefix("M", bit));
 export const Gbit = defUnit("Gbit", "gigabit", prefix("G", bit));
 export const Tbit = defUnit("Tbit", "terabit", prefix("T", bit));
 
-// https://en.wikipedia.org/wiki/Byte#Multiple-byte_units
-
 export const B = defUnit("B", "byte", mul(bit, 8, true));
 export const kB = defUnit("kB", "kilobyte", prefix("k", B));
 export const MB = defUnit("MB", "megabyte", prefix("M", B));
@@ -16,6 +14,15 @@ export const TB = defUnit("TB", "terabyte", prefix("T", B));
 export const PB = defUnit("PB", "petabyte", prefix("P", B));
 export const EB = defUnit("EB", "exabyte", prefix("E", B));
 
+// https://en.wikipedia.org/wiki/Byte#Multiple-byte_units
+
+export const Kibit = defUnit("Kibit", "kibibit", mul(bit, 1024));
+export const Mibit = defUnit("Mibit", "mebibit", mul(Kibit, 1024));
+export const Gibit = defUnit("Gibit", "gibibit", mul(Mibit, 1024));
+export const Tibit = defUnit("Tibit", "tebibit", mul(Gibit, 1024));
+export const Pibit = defUnit("Pibit", "pebibit", mul(Tibit, 1024));
+export const Eibit = defUnit("Eibit", "exbibit", mul(Pibit, 1024));
+
 export const KiB = defUnit("KiB", "kibibyte", mul(B, 1024));
 export const MiB = defUnit("MiB", "mebibyte", mul(KiB, 1024));
 export const GiB = defUnit("GiB", "gibibyte", mul(MiB, 1024));

diff --git a/packages/units/src/electric.ts b/packages/units/src/electric.ts
@@ -23,6 +23,12 @@ export const kΩ = defUnit("kΩ", "kiloohm", prefix("k", Ω));
 export const MΩ = defUnit("MΩ", "megaohm", prefix("M", Ω));
 export const GΩ = defUnit("GΩ", "gigaohm", prefix("G", Ω));
 
+// latin aliases
+export const ohm = Ω;
+export const kohm = kΩ;
+export const Mohm = MΩ;
+export const Gohm = GΩ;
+
 export const S = defUnit("S", "siemens", div(A, V, true));
 export const Wb = defUnit("Wb", "weber", mul(V, s, true));
 export const T = defUnit("T", "tesla", div(Wb, m2, true));

diff --git a/packages/units/src/frequency.ts b/packages/units/src/frequency.ts
@@ -9,3 +9,4 @@ export const THz = defUnit("THz", "terahertz", prefix("T", Hz));
 export const rpm = defUnit("rpm", "rotation per minute", mul(Hz, 1 / 60));
 
 export const ω = defUnit("ω", "radian per second", div(Hz, 2 * Math.PI));
+export const omega = ω;
diff --git a/packages/units/src/index.ts b/packages/units/src/index.ts
@@ -12,6 +12,7 @@ export * from "./frequency.js";
 export * from "./length.js";
 export * from "./luminous.js";
 export * from "./mass.js";
+export * from "./parts.js";
 export * from "./power.js";
 export * from "./pressure.js";
 export * from "./speed.js";

diff --git a/packages/units/src/length.ts b/packages/units/src/length.ts
@@ -1,14 +1,21 @@
 import { coherent, defUnit, mul, prefix } from "./unit.js";
 
 export const m = defUnit("m", "meter", coherent(1));
+export const km = defUnit("km", "kilometer", prefix("k", m));
 export const cm = defUnit("cm", "centimeter", prefix("c", m));
 export const mm = defUnit("mm", "millimeter", prefix("m", m));
 export const µm = defUnit("µm", "micrometer", prefix("µ", m));
 export const nm = defUnit("nm", "nanometer", prefix("n", m));
-export const km = defUnit("km", "kilometer", prefix("k", m));
+export const angstrom = defUnit("Å", "angstrom", mul(m, 1e-10));
+
 export const au = defUnit("au", "astronomical unit", mul(m, 149597870700));
+export const ly = defUnit("ly", "light year", mul(m, 9.4607304725808e15));
+export const pc = defUnit("pc", "parsec", mul(au, (180 * 60 * 60) / Math.PI));
 
 export const inch = defUnit("in", "inch", mul(m, 0.0254));
+export const mil = defUnit("mil", "mil", mul(inch, 1e-3));
+export const thou = mil;
+
 export const ft = defUnit("ft", "foot", mul(inch, 12));
 export const yd = defUnit("yd", "yard", mul(ft, 3));
 export const mi = defUnit("mi", "mile", mul(yd, 1760));

diff --git a/packages/units/src/parts.ts b/packages/units/src/parts.ts
@@ -0,0 +1,9 @@
+import { defUnit, dimensionless } from "./unit.js";
+
+export const percent = defUnit("%", "percent", dimensionless(1e-2));
+export const permille = defUnit("‰", "permille", dimensionless(1e-3));
+export const permyriad = defUnit("‱", "permyriad", dimensionless(1e-4));
+export const pcm = defUnit("pcm", "part per cent mille", dimensionless(1e-5));
+export const ppm = defUnit("ppm", "part per million", dimensionless(1e-6));
+export const ppb = defUnit("ppb", "part per billion", dimensionless(1e-9));
+export const ppt = defUnit("ppt", "part per trillion", dimensionless(1e-12));
Original file line number	Diff line number	Diff line change
Expand Up		@@ -9,3 +9,4 @@ export const THz = defUnit("THz", "terahertz", prefix("T", Hz));
		export const rpm = defUnit("rpm", "rotation per minute", mul(Hz, 1 / 60));

		export const ω = defUnit("ω", "radian per second", div(Hz, 2 * Math.PI));
		export const omega = ω;