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2026-04-26 01:37:00 +02:00 · 2026-04-26 01:35:37 +02:00 · 2026-04-26 01:33:37 +02:00 · 2026-04-26 01:31:45 +02:00 · 2026-04-25 23:29:30 +00:00 · 2026-04-26 01:28:33 +02:00
15 changed files with 2714 additions and 907 deletions
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@ -0,0 +1,34 @@
 name: Deploy MkDocs to Garage
 on:
  push:
    branches:
      - main  # Adjust to your branch name
 jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.x'
      - name: Install dependencies
        run: pip install mkdocs-material
      - name: Build
        run: mkdocs build
      - name: Sync to Garage S3
        uses: https://github.com/jakejarvis/s3-sync-action@master
        with:
          args: --endpoint-url https://s3.garage.bouvais.lu --acl public-read --delete
        env:
          AWS_S3_BUCKET: 'zig-dimal.bouvais.lu'
          AWS_ACCESS_KEY_ID: ${{ secrets.GARAGE_ACCESS_KEY }}
          AWS_SECRET_ACCESS_KEY: ${{ secrets.GARAGE_SECRET_KEY }}
          AWS_REGION: 'garage' 
          SOURCE_DIR: 'site' # MkDocs defaults to 'site' folder for output
--- a/674
+++ b/674
@ -0,0 +1,674 @@
 GNU GENERAL PUBLIC LICENSE
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 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@ -2,7 +2,7 @@
 A comptime-first dimensional analysis module for Zig. If you try to add meters to seconds, **it won't compile**. That's the point.
-Born from a space simulation where `i128` positions were needed to avoid float imprecision far from the origin, this module grew into a full physical-unit type system with zero runtime overhead.
+Started by a space simulation where `i128` positions were needed to avoid float imprecision far from the origin, this module grew into a full physical-unit type system with zero runtime overhead.
 > **Source:** [git.bouvais.lu/adrien/zig-dimal](https://git.bouvais.lu/adrien/zig-dimal)  
 > **Minimum Zig version:** `0.16.0`
@ -14,10 +14,14 @@ Born from a space simulation where `i128` positions were needed to avoid float i
 - **100% comptime** — all dimension and unit tracking happens at compile time. No added memory, *almost* native performance.
 - **Compile-time dimension errors** — adding `Meter` to `Second` is a compile error, not a runtime panic.
 - **Automatic unit conversion** — use `.to()` to convert between compatible units (e.g. `km/h` → `m/s`). Scale factors are resolved at comptime.
- **Full SI prefix support** — `pico`, `nano`, `micro`, `milli`, `centi`, `deci`, `kilo`, `mega`, `giga`, `tera`, `peta`, and more.
+* **Full SI prefix & Imperial support** — `pico` through `peta`, plus common Imperial units like `inch`, `ft`, `mi`, `lb`, and `oz`.
 - **Time scale support** — `min`, `hour`, `year` built in.
 - **Scalar and Vector types** — operate on individual values or fixed-size arrays with the same dimensional safety.
 - **Built-in physical quantities** — `dma.Base` provides ready-made types for `Velocity`, `Acceleration`, `Force`, `Energy`, `Pressure`, `ElectricCharge`, `ThermalConductivity`, and many more.
 - **Comparison operations** — `eq`, `ne`, `gt`, `gte`, `lt`, `lte` on both `Scalar` and `Vector`, with automatic scale resolution.
 - **Arithmetic with bare numbers** — multiply or divide a dimensioned value by a `comptime_int`, `comptime_float`, or plain `T` directly. The value is treated as dimensionless; dimensions pass through unchanged.
 - **`abs`, `pow`, `sqrt`** — unary operations with correct dimension tracking (`pow(2)` on `L¹` → `L²`, etc.).
 - **Vector geometry** — `dot` product (returns a `Scalar`), `cross` product (Vec3 only), element-wise `product` (all components multiplied).
 - **Rich formatting** — values print with their unit automatically: `9.81m.s⁻²`, `42m.kg.s⁻¹`, `0.172km`.
 - **`i128` support** — the whole reason this exists. Use large integers for high-precision fixed-point positions without manual conversion.
 - **Tests and benchmarks included** — run them and see how it performs on your machine (results welcome!).
@ -43,18 +47,7 @@ Born from a space simulation where `i128` positions were needed to avoid float i
 ### 1. Fetch the dependency
 ```sh
-zig fetch --save git+https://git.bouvais.lu/adrien/zig-dimal#b9647e04266e3f395cfd26b41622b0c119a1e5be
+zig fetch --save git+https://git.bouvais.lu/adrien/zig-dimal#0.1.1
 ```
 This will add the following to your `build.zig.zon` automatically:
 ```zig
 .dependencies = .{
    .dimal = .{
        .url = "git+https://git.bouvais.lu/adrien/zig-dimal#b9647e04266e3f395cfd26b41622b0c119a1e5be",
        .hash = "dimal-0.1.0-WNhSHvomAQAX1ISvq9ZBal-Gam6078y8hE67aC82l63V",
    },
 },
 ```
 ### 2. Wire it up in `build.zig`
@ -96,37 +89,37 @@ const Scales     = dma.Scales;
 ### Defining unit types
-A `Scalar` type is parameterized by three things: the numeric type (`f64`, `i128`, …), the dimensions (which physical quantities, and their exponents), and the scales (SI prefixes or custom time units).
+A `Scalar` type is parameterized by three things: the numeric type (`f64`, `i128`, …), the dimensions (which physical quantities and their exponents), and the scales (SI prefixes or custom time units). Both the dimension and scale arguments are plain struct literals — no wrapper call needed.
 ```zig
-const Meter     = Scalar(f64, .init(.{ .L = 1 }),            .init(.{}));
+const Meter     = Scalar(f64, .{ .L = 1 },           .{});
-const NanoMeter = Scalar(i64, .init(.{ .L = 1 }),            .init(.{ .L = .n }));
+const NanoMeter = Scalar(i64, .{ .L = 1 },           .{ .L = .n });
-const KiloMeter = Scalar(f64, .init(.{ .L = 1 }),            .init(.{ .L = .k }));
+const KiloMeter = Scalar(f64, .{ .L = 1 },           .{ .L = .k });
-const Second    = Scalar(f64, .init(.{ .T = 1 }),            .init(.{}));
+const Second    = Scalar(f64, .{ .T = 1 },           .{});
-const Velocity  = Scalar(f64, .init(.{ .L = 1, .T = -1 }),  .init(.{}));
+const Velocity  = Scalar(f64, .{ .L = 1, .T = -1 },  .{});
-const Kmh       = Scalar(f64, .init(.{ .L = 1, .T = -1 }),  .init(.{ .L = .k, .T = .hour }));
+const Kmh       = Scalar(f64, .{ .L = 1, .T = -1 },  .{ .L = .k, .T = .hour });
 ```
 Or use the pre-built helpers from `dma.Base`:
 ```zig
 const Acceleration = dma.Base.Acceleration.Of(f64);
-const KmhSpeed     = dma.Base.Speed.Scaled(f64, Scales.init(.{ .L = .k, .T = .hour }));
+const KmhSpeed     = dma.Base.Speed.Scaled(f64, .{ .L = .k, .T = .hour });
 ```
 ### Kinematics example
 ```zig
-const v0    = Velocity{ .value = 10.0 };  // 10 m/s
+const v0    = Velocity{ .value = 10.0 };       // 10 m/s
-const accel = Acceleration{ .value = 9.81 }; // 9.81 m/s²
+const accel = Acceleration{ .value = 9.81 };   // 9.81 m/s²
-const time  = Second{ .value = 5.0 };     // 5 s
+const time  = Second{ .value = 5.0 };          // 5 s
 // d = v₀t + ½at²
-const d1 = v0.mulBy(time);                     // → Meter
+const d1   = v0.mul(time);                         // → Meter
-const d2 = accel.mulBy(time.mulBy(time)).scale(0.5); // → Meter
+const d2   = accel.mul(time).mul(time).mul(0.5);   // → Meter  (bare 0.5 is dimensionless)
 const dist = d1.add(d2);
-const v_final = v0.add(accel.mulBy(time));
+const v_final = v0.add(accel.mul(time));
 std.debug.print("Distance: {d} | {d}\n", .{ dist, dist.to(KiloMeter) });
 // Distance: 172.625m | 0.172625km
@ -147,22 +140,117 @@ const speed_ms  = speed_kmh.to(Velocity); // 33.333... m/s — comptime ratio
 // const bad = speed_kmh.to(Second); // "Dimension mismatch in to: L1T-1 vs T1"
 ```
-### Working with Vectors
+#### Imperial
 Every `Scalar` type exposes a `.Vec3` and a generic `.Vec(n)`:
 ```zig
-const Vec3Meter = Meter.Vec3; // or: Vector(3, Meter)
+const Inch      = Scalar(f64, .{ .L = 1 }, .{ .L = .inch });
 const Mile      = Scalar(f64, .{ .L = 1 }, .{ .L = .mi });
 const Pound     = Scalar(f64, .{ .M = 1 }, .{ .M = .lb });
 // Conversion example
 const dist_m = Meter{ .value = 1609.344 };
 const dist_mi = dist_m.to(Mile); // Result: 1.0
 ```
 ### Arithmetic with bare numbers
 Passing a `comptime_int`, `comptime_float`, or plain `T` to `mul` / `div` treats it as a dimensionless value. Dimensions pass through unchanged.
 ```zig
 const Meter = Scalar(f64, .{ .L = 1 }, .{});
 const d     = Meter{ .value = 6.0 };
 const half    = d.mul(0.5);   // comptime_float → still Meter
 const doubled = d.mul(2);     // comptime_int   → still Meter
 const factor: f64 = 3.0;
 const tripled = d.mul(factor); // runtime f64    → still Meter
 ```
 ### Comparisons
 `eq`, `ne`, `gt`, `gte`, `lt`, `lte` work on any two `Scalar` values of the **same dimension**. Scales are resolved automatically before comparing.
 ```zig
 const Meter     = Scalar(i64, .{ .L = 1 }, .{});
 const KiloMeter = Scalar(i64, .{ .L = 1 }, .{ .L = .k });
 const m1000 = Meter{ .value = 1000 };
 const km1   = KiloMeter{ .value = 1 };
 const km2   = KiloMeter{ .value = 2 };
 _ = m1000.eq(km1);   // true  — same magnitude
 _ = km2.gt(m1000);   // true  — 2 km > 1000 m
 _ = m1000.lte(km2);  // true
 // Comparing with a bare number works when the scalar is dimensionless.
 // Comparing incompatible dimensions is a compile error.
 ```
 ### Unary operations: `abs`, `pow`, `sqrt`
 ```zig
 const Meter = Scalar(f64, .{ .L = 1 }, .{});
 const d     = Meter{ .value = -4.0 };
 const magnitude = d.abs();    // 4.0 m      — dimension unchanged
 const area      = d.pow(2);   // 16.0 m²    — dims scaled by exponent
 const side      = area.sqrt(); // 4.0 m     — dims halved (requires even exponents)
 ```
 `pow` accepts any `comptime_int` exponent and adjusts the dimension exponents accordingly. `sqrt` is a compile error unless all dimension exponents are even.
 ### Working with Vectors
 Every `Scalar` type exposes a `.Vec3` alias and a generic `.Vec(n)` type accessor:
 ```zig
 const Vec3Meter = Meter.Vec3; // equivalent to Vector(3, Meter)
 const pos = Vec3Meter{ .data = .{ 100, 200, 300 } };
 const t   = Second{ .value = 10 };
-const vel = pos.divByScalar(t); // → Vec3 of Velocity (m/s)
+const vel = pos.divScalar(t);  // → Vec3 of Velocity (m/s)
 std.debug.print("{d}\n", .{vel}); // (10, 20, 30)m.s⁻¹
 ```
-Vectors support: `add`, `sub`, `mulBy`, `divBy`, `mulByScalar`, `divByScalar`, `negate`, `to`, `length`, `lengthSqr`.
+#### Dot and cross products
 ```zig
 const Newton = Scalar(f32, .{ .M = 1, .L = 1, .T = -2 }, .{});
 const r     = Meter.Vec3{ .data = .{ 10.0, 0.0, 0.0 } };
 const force = Newton.Vec3{ .data = .{ 5.0, 5.0, 0.0 } };
 // Dot product — returns a Scalar (dimensions summed)
 const work   = force.dot(r);     // 50.0 J  (M¹L²T⁻²)
 // Cross product — returns a Vec3 (dimensions summed, Vec3 only)
 const torque = r.cross(force);   // (0, 0, 50) N·m
 ```
 #### Vector comparisons
 Element-wise comparisons return `[len]bool`. Whole-vector equality uses `eqAll` / `neAll`. A single scalar can be broadcast with the `*Scalar` variants.
 ```zig
 const positions  = Meter.Vec3{ .data = .{ 500.0, 1200.0, 3000.0 } };
 const threshold  = KiloMeter{ .value = 1.0 }; // 1 km
 const exceeded = positions.gtScalar(threshold); // [false, true, true]
 const eq_each  = positions.eq(positions);        // [true, true, true]  (element-wise)
 const all_same = positions.eqAll(positions);     // true  (whole-vector)
 ```
 #### Other Vector operations
 ```zig
 const v = Meter.Vec3{ .data = .{ -2.0, 3.0, -4.0 } };
 const v_abs  = v.abs();       // { 2, 3, 4 } m
 const vol    = v_abs.product(); // 24 m³  (dims × len)
 const area   = v_abs.pow(2);  // { 4, 9, 16 } m²
 const sides  = area.sqrt();   // { 2, 3, 4 } m  (element-wise sqrt)
 ```
 ---
@ -174,37 +262,63 @@ Vectors support: `add`, `sub`, `mulBy`, `divBy`, `mulByScalar`, `divByScalar`, `
 |---|---|
 | `.add(rhs)` | Add two quantities of the same dimension. Auto-converts scales. |
 | `.sub(rhs)` | Subtract. Auto-converts scales. |
-| `.mulBy(rhs)` | Multiply — dimensions are **summed**. `m * s⁻¹` → `m·s⁻¹`. |
+| `.mul(rhs)` | Multiply — dimensions are **summed**. `rhs` may be a `Scalar`, `T`, `comptime_int`, or `comptime_float` (bare numbers are dimensionless). |
-| `.divBy(rhs)` | Divide — dimensions are **subtracted**. `m / s` → `m·s⁻¹`. |
+| `.div(rhs)` | Divide — dimensions are **subtracted**. Same `rhs` flexibility as `mul`. |
 | `.abs()` | Absolute value. Dimensions and scales unchanged. |
 | `.pow(exp)` | Raise to a `comptime_int` exponent. Dimension exponents are multiplied by `exp`. |
 | `.sqrt()` | Square root. Compile error unless all dimension exponents are even. |
 | `.eq(rhs)` / `.ne(rhs)` | Equality / inequality comparison. Scales auto-resolved. |
 | `.gt(rhs)` / `.gte(rhs)` | Greater-than / greater-than-or-equal. |
 | `.lt(rhs)` / `.lte(rhs)` | Less-than / less-than-or-equal. |
 | `.to(DestType)` | Convert to another unit of the same dimension. Compile error on mismatch. |
-| `.vec3()` | Wrap the value in a `Vec3` of the same type. |
+| `.vec(len)` | Return a `Vector(len, Self)` with all components set to this value. |
-| `.Vec(n)` | Get the `Vector(n, Self)` type. |
+| `.vec3()` | Shorthand for `.vec(3)`. |
 | `.Vec3` | Type alias for `Vector(3, Self)`. |
 ### `Vector(len, Q)`
 | Method | Description |
 |---|---|
 | `.add(rhs)` / `.sub(rhs)` | Element-wise add / subtract. |
 | `.mul(rhs)` / `.div(rhs)` | Element-wise multiply / divide (both operands are Vectors). |
 | `.mulScalar(s)` / `.divScalar(s)` | Scale every component by a single `Scalar`, `T`, `comptime_int`, or `comptime_float`. |
 | `.dot(rhs)` | Dot product → `Scalar` with combined dimensions. |
 | `.cross(rhs)` | Cross product → `Vector(3, …)`. Vec3 only. |
 | `.abs()` | Element-wise absolute value. |
 | `.pow(exp)` | Element-wise `comptime_int` power. Dimension exponents scaled. |
 | `.sqrt()` | Element-wise square root. |
 | `.product()` | Multiply all components → `Scalar` with dimensions × `len`. |
 | `.negate()` | Negate all components. |
 | `.length()` | Euclidean length (returns `T`). |
 | `.lengthSqr()` | Sum of squared components (returns `T`). Cheaper than `length`. |
 | `.eq(rhs)` / `.ne(rhs)` | Element-wise comparison → `[len]bool`. |
 | `.gt(rhs)` / `.gte(rhs)` / `.lt(rhs)` / `.lte(rhs)` | Element-wise ordered comparisons → `[len]bool`. |
 | `.eqAll(rhs)` / `.neAll(rhs)` | Whole-vector equality / inequality → `bool`. |
 | `.eqScalar(s)` / `.neScalar(s)` | Broadcast scalar comparison → `[len]bool`. |
 | `.gtScalar(s)` / `.gteScalar(s)` / `.ltScalar(s)` / `.lteScalar(s)` | Broadcast ordered scalar comparisons → `[len]bool`. |
 | `.to(DestQ)` | Convert all components to a compatible scalar type. |
 ### `dma.Base` — Pre-built quantities
-A selection of what's available (call `.Of(T)` for base units, `.Scaled(T, scales)` for custom scales):
+Call `.Of(T)` for base-unit scalars, `.Scaled(T, scales)` for custom scales:
 `Meter`, `Second`, `Gramm`, `Kelvin`, `ElectricCurrent`, `Speed`, `Acceleration`, `Inertia`, `Force`, `Pressure`, `Energy`, `Power`, `Area`, `Volume`, `Density`, `Frequency`, `Viscosity`, `ElectricCharge`, `ElectricPotential`, `ElectricResistance`, `MagneticFlux`, `ThermalCapacity`, `ThermalConductivity`, and more.
-### `Scales` — SI prefixes
+### `Scales` — SI and Imperial Units
-| Tag | Factor |
+| Tag | Factor (Relative to Base) | Type |
-|---|---|
+|---|---|---|
-| `.P` | 10¹⁵ |
+| `.P` ... `.f` | $10^{15}$ ... $10^{-15}$ | SI Prefixes |
-| `.T` | 10¹² |
+| `.min`, `.hour`, `.year` | 60, 3600, 31,536,000 | Time |
-| `.G` | 10⁹ |
+| **`.inch`** | **0.0254** | Imperial Length (m) |
-| `.M` | 10⁶ |
+| **`.ft`** | **0.3048** | Imperial Length (m) |
-| `.k` | 10³ |
+| **`.yd`** | **0.9144** | Imperial Length (m) |
-| `.none` | 1 |
+| **`.mi`** | **1609.344** | Imperial Length (m)  |
-| `.c` | 10⁻² |
+| **`.oz`** | **28.3495231** | Imperial Mass (g) |
-| `.m` | 10⁻³ |
+| **`.lb`** | **453.59237** | Imperial Mass (g)  |
-| `.u` | 10⁻⁶ |
+| **`.st`** | **6350.29318** | Imperial Mass (g)  |
-| `.n` | 10⁻⁹ |
+
-| `.p` | 10⁻¹² |
+Scale entries for dimensions with exponent `0` are ignored — multiplying a dimensionless value by a kilometre-scale value no longer accidentally inherits the `k` prefix.
 | `.f` | 10⁻¹⁵ |
 | `.min` | 60 |
 | `.hour` | 3600 |
 | `.year` | 31 536 000 |
 ---
@ -221,7 +335,6 @@ Benchmark results are very welcome — feel free to share yours!
 ## Roadmap / Known Limitations
 - More operations beyond `add`, `sub`, `mulBy`, `divBy` (e.g. `pow`, `sqrt`).
 - SIMD acceleration for `Vector` operations.
 - Some paths may still fall back to runtime computation — optimization ongoing.
 - More test coverage.
--- a/docs/index.md
+++ b/docs/index.md
@ -0,0 +1,26 @@
 # Welcome to My Project
 This is a static site hosted via **Gitea Actions** and **Garage S3 Storage**.
 !!! info "Status"
    The deployment pipeline is currently **Active**. 
    Updates to the `main` branch are pushed automatically.
 ## Quick Start
 To replicate this setup, you need:
 1. **Traefik** as the reverse proxy.
 2. **Garage** for S3-compatible web hosting.
 3. **Gitea** for version control and CI.
 ### Deployment Details
 | Component | Technology |
 | :--- | :--- |
 | **Engine** | MkDocs Material |
 | **Hosting** | Garage S3 |
 | **Routing** | Traefik |
 ---
 ## Contact
 If you have questions, reach out via the Gitea instance.
--- a/docs/wishlist.md
+++ b/docs/wishlist.md
@ -0,0 +1,3 @@
 ## GPU support with WebGPU
 Example: https://github.com/seyhajin/webgpu-wasm-zig
--- a/mkdocs.yml
+++ b/mkdocs.yml
@ -0,0 +1,48 @@
 site_name: Bouvais Docs
 site_url: https://zig-dimal.bouvais.lu
 site_description: A minimal technical documentation site.
 site_author: Adrien Bouvais
 theme:
  name: material
  language: en
  # Color palette with auto light/dark mode
  palette:
    - media: "(prefers-color-scheme: light)"
      scheme: default
      primary: indigo
      accent: indigo
      toggle:
        icon: material/brightness-7
        name: Switch to dark mode
    - media: "(prefers-color-scheme: dark)"
      scheme: slate
      primary: indigo
      accent: indigo
      toggle:
        icon: material/brightness-4
        name: Switch to light mode
  features:
    - navigation.sections
    - navigation.top
    - content.code.copy
    - content.code.annotate
 # Minimal plugins
 plugins:
  - search
 # Your single page
 nav:
  - Home: index.md
 # Extensions to make your markdown look better
 markdown_extensions:
  - admonition
  - pymdownx.details
  - pymdownx.superfences
  - pymdownx.highlight:
      anchor_linenums: true
  - pymdownx.inlinehilite
  - attr_list
--- a/src/Base.zig
+++ b/src/Base.zig
@ -3,33 +3,92 @@ const std = @import("std");
 // Adjust these imports to match your actual file names
 const Dimensions = @import("Dimensions.zig");
 const Scales = @import("Scales.zig");
-const Scalar = @import("Scalar.zig").Scalar;
+const Scalar = @import("Quantity.zig").Scalar;
-/// Helper function to create a clean namespace for each physical dimension.
+fn PhysicalConstant(comptime d: Dimensions.ArgOpts, comptime val: f64, comptime s: Scales.ArgOpts) type {
 /// It exposes the raw dimensions, and easy type-creators for Base or Scaled variants.
 pub fn BaseScalar(comptime d: anytype) type {
    return struct {
-        pub const dims = Dimensions.init(d);
+        const dims = Dimensions.init(d);
        const scales = Scales.init(s);
-        /// Creates a Scalar of this dimension using default scales.
+        /// Instantiates the constant into a specific numeric type.
-        /// Example: const V = Quantities.Velocity.Base(f32);
+        pub fn Of(comptime T: type) Scalar(T, d, s) {
-        pub fn Of(comptime T: type) type {
+            return .{ .data = @splat(@as(T, @floatCast(val))) };
            return Scalar(T, dims, Scales.init(.{}));
        }
        /// Creates a Scalar of this dimension using custom scales.
        /// Example: const Kmh = Quantities.Velocity.Scaled(f32, Scales.init(.{ .L = .k, .T = .hour }));
        pub fn Scaled(comptime T: type, comptime s: Scales) type {
            return Scalar(T, dims, s);
        }
    };
 }
-pub const Dimless = BaseScalar(.{});
+fn BaseScalar(comptime d: Dimensions.ArgOpts) type {
    return struct {
        const dims = Dimensions.init(d);
        /// Creates a Scalar of this dimension using default scales.
        /// Example: const V = Quantities.Velocity.Base(f32);
        pub fn Of(comptime T: type) type {
            return Scalar(T, d, .{});
        }
        /// Creates a Scalar of this dimension using custom scales.
        /// Example: const Kmh = Quantities.Velocity.Scaled(f32, Scales.init(.{ .L = .k, .T = .hour }));
        pub fn Scaled(comptime T: type, comptime s: Scales.ArgOpts) type {
            return Scalar(T, d, s);
        }
    };
 }
 // ==========================================
 // Physical Constants
 // ==========================================
 pub const Constants = struct {
    /// Speed of light in vacuum (c) [m/s]
    pub const SpeedOfLight = PhysicalConstant(.{ .L = 1, .T = -1 }, 299792458.0, .{});
    /// Planck constant (h) [J⋅s = kg⋅m²⋅s⁻¹]
    pub const Planck = PhysicalConstant(.{ .M = 1, .L = 2, .T = -1 }, 6.62607015e-34, .{ .M = .k });
    /// Reduced Planck constant (ℏ) [J⋅s]
    pub const ReducedPlanck = PhysicalConstant(.{ .M = 1, .L = 2, .T = -1 }, 1.054571817e-34, .{ .M = .k });
    /// Boltzmann constant (k_B) [J⋅K⁻¹ = kg⋅m²⋅s⁻²⋅K⁻¹]
    pub const Boltzmann = PhysicalConstant(.{ .M = 1, .L = 2, .T = -2, .Tp = -1 }, 1.380649e-23, .{ .M = .k });
    /// Newtonian constant of gravitation (G) [m³⋅kg⁻¹⋅s⁻²]
    pub const Gravitational = PhysicalConstant(.{ .M = -1, .L = 3, .T = -2 }, 6.67430e-11, .{ .M = .k });
    /// Stefan–Boltzmann constant (σ) [W⋅m⁻²⋅K⁻⁴ = kg⋅s⁻³⋅K⁻⁴]
    pub const StefanBoltzmann = PhysicalConstant(.{ .M = 1, .T = -3, .Tp = -4 }, 5.670374419e-8, .{ .M = .k });
    /// Elementary charge (e) [C = A⋅s]
    pub const ElementaryCharge = PhysicalConstant(.{ .T = 1, .I = 1 }, 1.602176634e-19, .{});
    /// Vacuum magnetic permeability (μ_0) [N⋅A⁻² = kg⋅m⋅s⁻²⋅A⁻²]
    pub const VacuumPermeability = PhysicalConstant(.{ .M = 1, .L = 1, .T = -2, .I = -2 }, 1.25663706127e-6, .{ .M = .k });
    /// Vacuum electric permittivity (ε_0) [F⋅m⁻¹ = A²⋅s⁴⋅kg⁻¹⋅m⁻³]
    pub const VacuumPermittivity = PhysicalConstant(.{ .M = -1, .L = -3, .T = 4, .I = 2 }, 8.8541878188e-12, .{ .M = .k });
    /// Electron mass (m_e) [kg]
    pub const ElectronMass = PhysicalConstant(.{ .M = 1 }, 9.1093837139e-31, .{ .M = .k });
    /// Proton mass (m_p) [kg]
    pub const ProtonMass = PhysicalConstant(.{ .M = 1 }, 1.67262192595e-27, .{ .M = .k });
    /// Neutron mass (m_n) [kg]
    pub const NeutronMass = PhysicalConstant(.{ .M = 1 }, 1.67492750056e-27, .{ .M = .k });
    /// Fine-structure constant (α) [Dimensionless]
    pub const FineStructure = PhysicalConstant(.{}, 0.0072973525643, .{});
    /// Avogadro constant (N_A) [mol⁻¹]
    /// Note: Assuming mol is currently treated as dimensionless in the base system,
    /// otherwise requires adding an `.N` dimension to Dimensions.ArgOpts.
    pub const Avogadro = PhysicalConstant(.{}, 6.02214076e23, .{});
 };
 // ==========================================
 // Base Quantities
 // ==========================================
 pub const Dimless = BaseScalar(.{});
 pub const Meter = BaseScalar(.{ .L = 1 });
 pub const Second = BaseScalar(.{ .T = 1 });
 pub const Gramm = BaseScalar(.{ .M = 1 });
@ -98,58 +157,95 @@ pub const SurfaceTension = BaseScalar(.{ .M = 1, .T = -2 }); // Corrected from M
 test "BaseQuantities - Core dimensions instantiation" {
    // Basic types via generic wrappers
    const M = Meter.Of(f32);
-    const distance = M{ .value = 100.0 };
+    const distance = M.splat(100);
-    try std.testing.expectEqual(100.0, distance.value);
+    try std.testing.expectEqual(100.0, distance.value());
    try std.testing.expectEqual(1, M.dims.get(.L));
    try std.testing.expectEqual(0, M.dims.get(.T));
    // Test specific scale variants
-    const Kmh = Speed.Scaled(f32, Scales.init(.{ .L = .k, .T = .hour }));
+    const Kmh = Speed.Scaled(f32, .{ .L = .k, .T = .hour });
-    const speed = Kmh{ .value = 120.0 };
+    const speed = Kmh.splat(120);
-    try std.testing.expectEqual(120.0, speed.value);
+    try std.testing.expectEqual(120.0, speed.value());
    try std.testing.expectEqual(.k, @TypeOf(speed).scales.get(.L));
    try std.testing.expectEqual(.hour, @TypeOf(speed).scales.get(.T));
 }
 test "BaseQuantities - Kinematics equations" {
-    const d = Meter.Of(f32){ .value = 50.0 };
+    const d = Meter.Of(f32).splat(50.0);
-    const t = Second.Of(f32){ .value = 2.0 };
+    const t = Second.Of(f32).splat(2.0);
    // Velocity = Distance / Time
-    const v = d.divBy(t);
+    const v = d.div(t);
-    try std.testing.expectEqual(25.0, v.value);
+    try std.testing.expectEqual(25.0, v.value());
    try std.testing.expect(Speed.dims.eql(@TypeOf(v).dims));
    // Acceleration = Velocity / Time
-    const a = v.divBy(t);
+    const a = v.div(t);
-    try std.testing.expectEqual(12.5, a.value);
+    try std.testing.expectEqual(12.5, a.value());
    try std.testing.expect(Acceleration.dims.eql(@TypeOf(a).dims));
 }
 test "BaseQuantities - Dynamics (Force and Work)" {
    // 10 kg
-    const m = Gramm.Scaled(f32, Scales.init(.{ .M = .k })){ .value = 10.0 };
+    const m = Gramm.Scaled(f32, .{ .M = .k }).splat(10.0);
    // 9.8 m/s^2
-    const a = Acceleration.Of(f32){ .value = 9.8 };
+    const a = Acceleration.Of(f32).splat(9.8);
    // Force = mass * acceleration
-    const f = m.mulBy(a);
+    const f = m.mul(a);
-    try std.testing.expectEqual(98000, f.value);
+    try std.testing.expectEqual(98, f.value());
    try std.testing.expect(Force.dims.eql(@TypeOf(f).dims));
    // Energy (Work) = Force * distance
-    const distance = Meter.Of(f32){ .value = 5.0 };
+    const distance = Meter.Of(f32).splat(5.0);
-    const energy = f.mulBy(distance);
+    const energy = f.mul(distance);
-    try std.testing.expectEqual(490000, energy.value);
+    try std.testing.expectEqual(490, energy.value());
    try std.testing.expect(Energy.dims.eql(@TypeOf(energy).dims));
 }
 test "BaseQuantities - Electric combinations" {
-    const current = ElectricCurrent.Of(f32){ .value = 2.0 }; // 2 A
+    const current = ElectricCurrent.Of(f32).splat(2); // 2 A
-    const time = Second.Of(f32){ .value = 3.0 }; // 3 s
+    const time = Second.Of(f32).splat(3.0); // 3 s
    // Charge = Current * time
-    const charge = current.mulBy(time);
+    const charge = current.mul(time);
-    try std.testing.expectEqual(6.0, charge.value);
+    try std.testing.expectEqual(6.0, charge.value());
    try std.testing.expect(ElectricCharge.dims.eql(@TypeOf(charge).dims));
 }
 test "Constants - Initialization and dimension checks" {
    // Speed of Light
    const c = Constants.SpeedOfLight.Of(f64);
    try std.testing.expectEqual(299792458.0, c.value());
    try std.testing.expectEqual(1, @TypeOf(c).dims.get(.L));
    try std.testing.expectEqual(-1, @TypeOf(c).dims.get(.T));
    // Electron Mass (verifying scale as well)
    const me = Constants.ElectronMass.Of(f64);
    try std.testing.expectEqual(9.1093837139e-31, me.value());
    try std.testing.expectEqual(1, @TypeOf(me).dims.get(.M));
    try std.testing.expectEqual(.k, @TypeOf(me).scales.get(.M)); // Should be scaled to kg
    // Boltzmann Constant (Complex derived dimensions)
    const kb = Constants.Boltzmann.Of(f64);
    try std.testing.expectEqual(1.380649e-23, kb.value());
    try std.testing.expectEqual(1, @TypeOf(kb).dims.get(.M));
    try std.testing.expectEqual(2, @TypeOf(kb).dims.get(.L));
    try std.testing.expectEqual(-2, @TypeOf(kb).dims.get(.T));
    try std.testing.expectEqual(-1, @TypeOf(kb).dims.get(.Tp));
    try std.testing.expectEqual(.k, @TypeOf(kb).scales.get(.M));
    // Vacuum Permittivity
    const eps0 = Constants.VacuumPermittivity.Of(f64);
    try std.testing.expectEqual(8.8541878188e-12, eps0.value());
    try std.testing.expectEqual(-1, @TypeOf(eps0).dims.get(.M));
    try std.testing.expectEqual(-3, @TypeOf(eps0).dims.get(.L));
    try std.testing.expectEqual(4, @TypeOf(eps0).dims.get(.T));
    try std.testing.expectEqual(2, @TypeOf(eps0).dims.get(.I));
    // Fine Structure Constant (Dimensionless)
    const alpha = Constants.FineStructure.Of(f64);
    try std.testing.expectEqual(0.0072973525643, alpha.value());
    try std.testing.expectEqual(0, @TypeOf(alpha).dims.get(.M));
    try std.testing.expectEqual(0, @TypeOf(alpha).dims.get(.L));
 }
--- a/src/Dimensions.zig
+++ b/src/Dimensions.zig
@ -1,5 +1,15 @@
 const std = @import("std");
 pub const ArgOpts = struct {
    L: comptime_int = 0,
    M: comptime_int = 0,
    T: comptime_int = 0,
    I: comptime_int = 0,
    Tp: comptime_int = 0,
    N: comptime_int = 0,
    J: comptime_int = 0,
 };
 pub const Dimension = enum {
    /// Length
    L,
@ -31,11 +41,15 @@ pub const Dimension = enum {
 // --------- Dimensions struct ---------
 /// Holds the exponent of each SI base dimension for a given quantity (e.g. velocity = L¹T⁻¹).
 /// All values are `comptime_int` — no runtime storage.
 const Self = @This();
 data: std.EnumArray(Dimension, comptime_int),
-pub fn init(comptime init_val: anytype) Self {
+/// Create a `Dimensions` from a struct literal, e.g. `.{ .L = 1, .T = -1 }`.
 /// Unspecified dimensions default to 0.
 pub fn init(comptime init_val: ArgOpts) Self {
    var s = Self{ .data = std.EnumArray(Dimension, comptime_int).initFill(0) };
    inline for (std.meta.fields(@TypeOf(init_val))) |f|
        s.data.set(@field(Dimension, f.name), @field(init_val, f.name));
@ -54,27 +68,57 @@ pub fn set(comptime self: *Self, comptime key: Dimension, comptime val: i8) void
    self.data.set(key, val);
 }
 pub fn argsOpt(self: Self) ArgOpts {
    var args: ArgOpts = undefined;
    inline for (std.enums.values(Dimension)) |d|
        @field(args, @tagName(d)) = self.get(d);
    return args;
 }
 /// Add exponents component-wise. Used internally by `mul`.
 pub fn add(comptime a: Self, comptime b: Self) Self {
    var result = Self.initFill(0);
-    for (std.enums.values(Dimension)) |d|
+    inline for (std.enums.values(Dimension)) |d|
        result.set(d, a.get(d) + b.get(d));
    return result;
 }
 /// Subtract exponents component-wise. Used internally by `div`.
 pub fn sub(comptime a: Self, comptime b: Self) Self {
    @setEvalBranchQuota(10_000);
    var result = Self.initFill(0);
    inline for (std.enums.values(Dimension)) |d|
        result.set(d, a.get(d) - b.get(d));
    return result;
 }
 /// Multiply exponents by a scalar integer. Used internally by `pow` in Scalar.
 pub fn scale(comptime a: Self, comptime exp: comptime_int) Self {
    var result = Self.initFill(0);
    inline for (std.enums.values(Dimension)) |d|
        result.set(d, a.get(d) * exp);
    return result;
 }
 pub fn div(comptime a: Self, comptime exp: comptime_int) Self {
    var result = Self.initFill(0);
    inline for (std.enums.values(Dimension)) |d|
        result.set(d, a.get(d) / exp);
    return result;
 }
 /// Returns true if every dimension exponent is equal. Used to enforce type compatibility in `add`, `sub`, `to`.
 pub fn eql(comptime a: Self, comptime b: Self) bool {
    inline for (std.enums.values(Dimension)) |d|
        if (a.get(d) != b.get(d)) return false;
    return true;
 }
 pub fn isSquare(comptime a: Self) bool {
    inline for (std.enums.values(Dimension)) |d|
        if (a.get(d) % 2 != 0) return false;
    return true;
 }
 pub fn str(comptime a: Self) []const u8 {
    var out: []const u8 = "";
    const dims = std.enums.values(Dimension);
--- a/src/Quantity.zig
+++ b/src/Quantity.zig
--- a/src/Scalar.zig
+++ b/src/Scalar.zig
@ -1,396 +0,0 @@
 const std = @import("std");
 const hlp = @import("helper.zig");
 const Vector = @import("Vector.zig").Vector;
 const Scales = @import("Scales.zig");
 const UnitScale = Scales.UnitScale;
 const Dimensions = @import("Dimensions.zig");
 const Dimension = Dimensions.Dimension;
 pub fn Scalar(comptime T: type, comptime d: Dimensions, comptime s: Scales) type {
    @setEvalBranchQuota(10_000_000);
    return struct {
        value: T,
        const Self = @This();
        pub const Vec3: type = Vector(3, Self);
        pub const ValueType: type = T;
        pub const dims: Dimensions = d;
        pub const scales = s;
        pub inline fn add(self: Self, rhs: anytype) Scalar(
            T,
            dims,
            scales.min(@TypeOf(rhs).scales),
        ) {
            if (comptime !dims.eql(@TypeOf(rhs).dims))
                @compileError("Dimension mismatch in add: " ++ dims.str() ++ " vs " ++ @TypeOf(rhs).dims.str());
            if (comptime @TypeOf(rhs) == Self)
                return .{ .value = self.value + rhs.value };
            const TargetType = Scalar(T, dims, scales.min(@TypeOf(rhs).scales));
            const lhs_val = if (comptime @TypeOf(self) == TargetType) self.value else self.to(TargetType).value;
            const rhs_val = if (comptime @TypeOf(rhs) == TargetType) rhs.value else rhs.to(TargetType).value;
            return .{ .value = lhs_val + rhs_val };
        }
        pub inline fn sub(self: Self, rhs: anytype) Scalar(
            T,
            dims,
            scales.min(@TypeOf(rhs).scales),
        ) {
            if (comptime !dims.eql(@TypeOf(rhs).dims))
                @compileError("Dimension mismatch in sub: " ++ dims.str() ++ " vs " ++ @TypeOf(rhs).dims.str());
            if (comptime @TypeOf(rhs) == Self)
                return .{ .value = self.value - rhs.value };
            const TargetType = Scalar(T, dims, scales.min(@TypeOf(rhs).scales));
            const lhs_val = if (comptime @TypeOf(self) == TargetType) self.value else self.to(TargetType).value;
            const rhs_val = if (comptime @TypeOf(rhs) == TargetType) rhs.value else rhs.to(TargetType).value;
            return .{ .value = lhs_val - rhs_val };
        }
        pub inline fn mulBy(self: Self, rhs: anytype) Scalar(
            T,
            dims.add(@TypeOf(rhs).dims),
            scales.min(@TypeOf(rhs).scales),
        ) {
            const RhsType = @TypeOf(rhs);
            const SelfNorm = Scalar(T, dims, scales.min(RhsType.scales));
            const RhsNorm = Scalar(T, RhsType.dims, scales.min(RhsType.scales));
            if (comptime Self == SelfNorm and RhsType == RhsNorm)
                return .{ .value = self.value * rhs.value };
            const lhs_val = if (comptime Self == SelfNorm) self.value else self.to(SelfNorm).value;
            const rhs_val = if (comptime RhsType == RhsNorm) rhs.value else rhs.to(RhsNorm).value;
            return .{ .value = lhs_val * rhs_val };
        }
        pub inline fn divBy(self: Self, rhs: anytype) Scalar(
            T,
            dims.sub(@TypeOf(rhs).dims),
            scales.min(@TypeOf(rhs).scales),
        ) {
            const RhsType = @TypeOf(rhs);
            const SelfNorm = Scalar(T, dims, scales.min(RhsType.scales));
            const RhsNorm = Scalar(T, RhsType.dims, scales.min(RhsType.scales));
            const lhs_val = if (comptime Self == SelfNorm) self.value else self.to(SelfNorm).value;
            const rhs_val = if (comptime RhsType == RhsNorm) rhs.value else rhs.to(RhsNorm).value;
            if (comptime @typeInfo(T) == .int) {
                return .{ .value = @divTrunc(lhs_val, rhs_val) };
            } else {
                return .{ .value = lhs_val / rhs_val };
            }
        }
        pub inline fn to(self: Self, comptime Dest: type) Dest {
            if (comptime !dims.eql(Dest.dims))
                @compileError("Dimension mismatch in to: " ++ dims.str() ++ " vs " ++ Dest.dims.str());
            if (comptime @TypeOf(self) == Dest)
                return self;
            const DestT = Dest.ValueType;
            const ratio = comptime (scales.getFactor(dims) / Dest.scales.getFactor(Dest.dims));
            // Fast-path: Native pure-integer exact conversions
            if (comptime @typeInfo(T) == .int and @typeInfo(DestT) == .int) {
                if (comptime ratio >= 1.0 and @round(ratio) == ratio) {
                    const mult: DestT = comptime @intFromFloat(ratio);
                    return .{ .value = @as(DestT, @intCast(self.value)) * mult };
                } else if (comptime ratio < 1.0 and @round(1.0 / ratio) == 1.0 / ratio) {
                    const div: DestT = comptime @intFromFloat(1.0 / ratio);
                    const val = @as(DestT, @intCast(self.value));
                    const half = comptime div / 2;
                    // Native round-to-nearest
                    const rounded = if (val >= 0) @divTrunc(val + half, div) else @divTrunc(val - half, div);
                    return .{ .value = rounded };
                }
            }
            // Fallback preserving native Float types (e.g., f128 shouldn't downcast to f64)
            if (comptime @typeInfo(DestT) == .float) {
                const val_f = switch (@typeInfo(T)) {
                    inline .int => @as(DestT, @floatFromInt(self.value)),
                    inline .float => @as(DestT, @floatCast(self.value)),
                    else => unreachable,
                };
                return .{ .value = val_f * @as(DestT, @floatCast(ratio)) };
            } else {
                const val_f = switch (@typeInfo(T)) {
                    inline .int => @as(f64, @floatFromInt(self.value)),
                    inline .float => @as(f64, @floatCast(self.value)),
                    else => unreachable,
                };
                return .{ .value = @intFromFloat(@round(val_f * ratio)) };
            }
        }
        pub fn Vec(self: Self, comptime len: comptime_int) Vector(len, Self) {
            return Vector(len, Self).initDefault(self.value);
        }
        pub fn vec3(self: Self) Vec3 {
            return Vec3.initDefault(self.value);
        }
        pub fn formatNumber(
            self: Self,
            writer: *std.Io.Writer,
            options: std.fmt.Number,
        ) !void {
            switch (@typeInfo(T)) {
                .float, .comptime_float => try writer.printFloat(self.value, options),
                .int, .comptime_int => try writer.printInt(self.value, 10, .lower, .{
                    .width = options.width,
                    .alignment = options.alignment,
                    .fill = options.fill,
                    .precision = options.precision,
                }),
                else => unreachable,
            }
            var first = true;
            inline for (std.enums.values(Dimension)) |bu| {
                const v = dims.get(bu);
                if (comptime v == 0) continue;
                if (!first)
                    try writer.writeAll(".");
                first = false;
                const uscale = scales.get(bu);
                if (bu == .T and (uscale == .min or uscale == .hour or uscale == .year))
                    try writer.print("{s}", .{uscale.str()})
                else
                    try writer.print("{s}{s}", .{ uscale.str(), bu.unit() });
                if (v != 1)
                    try hlp.printSuperscript(writer, v);
            }
        }
    };
 }
 test "Generate quantity" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = -3 }));
    const Second = Scalar(f32, Dimensions.init(.{ .T = 1 }), Scales.init(.{ .T = .n }));
    const distance = Meter{ .value = 10 };
    const time = Second{ .value = 2 };
    try std.testing.expectEqual(10, distance.value);
    try std.testing.expectEqual(2, time.value);
 }
 test "Add" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const distance = Meter{ .value = 10 };
    const distance2 = Meter{ .value = 20 };
    const added = distance.add(distance2);
    try std.testing.expectEqual(30, added.value);
    try std.testing.expectEqual(1, @TypeOf(added).dims.get(.L));
    const KiloMeter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const distance3 = KiloMeter{ .value = 2 };
    const added2 = distance.add(distance3);
    try std.testing.expectEqual(2010, added2.value);
    try std.testing.expectEqual(1, @TypeOf(added2).dims.get(.L));
    const added3 = distance3.add(distance).to(KiloMeter);
    try std.testing.expectEqual(2, added3.value);
    try std.testing.expectEqual(1, @TypeOf(added3).dims.get(.L));
    const KiloMeter_f = Scalar(f64, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const distance4 = KiloMeter_f{ .value = 2 };
    const added4 = distance4.add(distance).to(KiloMeter_f);
    try std.testing.expectApproxEqAbs(2.01, added4.value, 0.000001);
    try std.testing.expectEqual(1, @TypeOf(added4).dims.get(.L));
 }
 test "Sub" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const KiloMeter_f = Scalar(f64, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const a = Meter{ .value = 500 };
    const b = Meter{ .value = 200 };
    const diff = a.sub(b);
    try std.testing.expectEqual(300, diff.value);
    const diff2 = b.sub(a);
    try std.testing.expectEqual(-300, diff2.value);
    const km_f = KiloMeter_f{ .value = 2.5 };
    const m_f = Meter{ .value = 500 };
    const diff3 = km_f.sub(m_f);
    try std.testing.expectApproxEqAbs(2000, diff3.value, 1e-4);
 }
 test "MulBy" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const Second = Scalar(f32, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const d = Meter{ .value = 3.0 };
    const t = Second{ .value = 4.0 };
    const area_time = d.mulBy(t);
    try std.testing.expectEqual(12, area_time.value);
    try std.testing.expectEqual(1, @TypeOf(area_time).dims.get(.L));
    try std.testing.expectEqual(1, @TypeOf(area_time).dims.get(.T));
    const d2 = Meter{ .value = 5.0 };
    const area = d.mulBy(d2);
    try std.testing.expectEqual(15, area.value);
    try std.testing.expectEqual(2, @TypeOf(area).dims.get(.L));
    try std.testing.expectEqual(0, @TypeOf(area).dims.get(.T));
 }
 test "MulBy with scale" {
    const KiloMeter = Scalar(f32, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const KiloGram = Scalar(f32, Dimensions.init(.{ .M = 1 }), Scales.init(.{ .M = .k }));
    const dist = KiloMeter{ .value = 2.0 };
    const mass = KiloGram{ .value = 3.0 };
    const prod = dist.mulBy(mass);
    try std.testing.expectEqual(1, @TypeOf(prod).dims.get(.L));
    try std.testing.expectEqual(1, @TypeOf(prod).dims.get(.M));
 }
 test "MulBy with type change" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const Second = Scalar(f64, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const KmSec = Scalar(i64, Dimensions.init(.{ .L = 1, .T = 1 }), Scales.init(.{ .L = .k }));
    const KmSec_f = Scalar(f32, Dimensions.init(.{ .L = 1, .T = 1 }), Scales.init(.{ .L = .k }));
    const d = Meter{ .value = 3.0 };
    const t = Second{ .value = 4.0 };
    const area_time = d.mulBy(t).to(KmSec);
    const area_time_f = d.mulBy(t).to(KmSec_f);
    try std.testing.expectEqual(12, area_time.value);
    try std.testing.expectApproxEqAbs(12, area_time_f.value, 0.0001);
    try std.testing.expectEqual(1, @TypeOf(area_time).dims.get(.L));
    try std.testing.expectEqual(1, @TypeOf(area_time).dims.get(.T));
 }
 test "MulBy small" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .n }));
    const Second = Scalar(f32, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const d = Meter{ .value = 3.0 };
    const t = Second{ .value = 4.0 };
    const area_time = d.mulBy(t);
    try std.testing.expectEqual(12, area_time.value);
    try std.testing.expectEqual(1, @TypeOf(area_time).dims.get(.L));
    try std.testing.expectEqual(1, @TypeOf(area_time).dims.get(.T));
 }
 test "MulBy dimensionless" {
    const DimLess = Scalar(i128, Dimensions.init(.{}), Scales.init(.{}));
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const d = Meter{ .value = 7 };
    const scaled = d.mulBy(DimLess{ .value = 3 });
    try std.testing.expectEqual(21, scaled.value);
    try std.testing.expectEqual(1, @TypeOf(scaled).dims.get(.L));
 }
 test "Chained: velocity and acceleration" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const Second = Scalar(f32, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const dist = Meter{ .value = 100.0 };
    const t1 = Second{ .value = 5.0 };
    const velocity = dist.divBy(t1);
    try std.testing.expectEqual(20, velocity.value);
    try std.testing.expectEqual(1, @TypeOf(velocity).dims.get(.L));
    try std.testing.expectEqual(-1, @TypeOf(velocity).dims.get(.T));
    const t2 = Second{ .value = 4.0 };
    const accel = velocity.divBy(t2);
    try std.testing.expectEqual(5, accel.value);
    try std.testing.expectEqual(1, @TypeOf(accel).dims.get(.L));
    try std.testing.expectEqual(-2, @TypeOf(accel).dims.get(.T));
 }
 test "DivBy integer exact" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const Second = Scalar(f32, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const dist = Meter{ .value = 120 };
    const time = Second{ .value = 4 };
    const vel = dist.divBy(time);
    try std.testing.expectEqual(30, vel.value);
    try std.testing.expectEqual(1, @TypeOf(vel).dims.get(.L));
    try std.testing.expectEqual(-1, @TypeOf(vel).dims.get(.T));
 }
 test "Conversion chain: km -> m -> cm" {
    const KiloMeter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const CentiMeter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .c }));
    const km = KiloMeter{ .value = 15 };
    const m = km.to(Meter);
    const cm = m.to(CentiMeter);
    try std.testing.expectEqual(15_000, m.value);
    try std.testing.expectEqual(1_500_000, cm.value);
 }
 test "Conversion: hours -> minutes -> seconds" {
    const Hour = Scalar(i128, Dimensions.init(.{ .T = 1 }), Scales.init(.{ .T = .hour }));
    const Minute = Scalar(i128, Dimensions.init(.{ .T = 1 }), Scales.init(.{ .T = .min }));
    const Second = Scalar(i128, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const h = Hour{ .value = 1.0 };
    const min = h.to(Minute);
    const sec = min.to(Second);
    try std.testing.expectEqual(60, min.value);
    try std.testing.expectEqual(3600, sec.value);
 }
 test "Negative values" {
    const Meter = Scalar(i128, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const a = Meter{ .value = 5 };
    const b = Meter{ .value = 20 };
    const diff = a.sub(b);
    try std.testing.expectEqual(-15, diff.value);
 }
 test "Format Scalar" {
    const MeterPerSecondSq = Scalar(
        f32,
        Dimensions.init(.{ .L = 1, .T = -2 }),
        Scales.init(.{ .T = .n }),
    );
    const KgMeterPerSecond = Scalar(
        f32,
        Dimensions.init(.{ .M = 1, .L = 1, .T = -1 }),
        Scales.init(.{ .M = .k }),
    );
    const Meter = Scalar(f32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const m = Meter{ .value = 1.23456 };
    const accel = MeterPerSecondSq{ .value = 9.81 };
    const momentum = KgMeterPerSecond{ .value = 42.0 };
    var buf: [64]u8 = undefined;
    var res = try std.fmt.bufPrint(&buf, "{d:.2}", .{m});
    try std.testing.expectEqualStrings("1.23m", res);
    res = try std.fmt.bufPrint(&buf, "{d}", .{accel});
    try std.testing.expectEqualStrings("9.81m.ns⁻²", res);
    res = try std.fmt.bufPrint(&buf, "{d}", .{momentum});
    try std.testing.expectEqualStrings("42m.kg.s⁻¹", res);
    res = try std.fmt.bufPrint(&buf, "{d:_>10.1}", .{m});
    try std.testing.expectEqualStrings("_______1.2m", res);
 }
--- a/src/Scales.zig
+++ b/src/Scales.zig
@ -3,6 +3,22 @@ const hlp = @import("helper.zig");
 const Dimensions = @import("Dimensions.zig");
 const Dimension = @import("Dimensions.zig").Dimension;
 // TODO: add more scales like feet and inch
 /// Use to initiate Scalar and Scales type
 pub const ArgOpts = struct {
    L: UnitScale = .none,
    M: UnitScale = .none,
    T: UnitScale = .none,
    I: UnitScale = .none,
    Tp: UnitScale = .none,
    N: UnitScale = .none,
    J: UnitScale = .none,
 };
 /// SI prefix (pico…peta) plus time-unit aliases (min, hour, year).
 /// The integer value encodes the exponent for SI prefixes (e.g. `k = 3` → 10³),
 /// and the literal factor for time units (e.g. `hour = 3600`).
 pub const UnitScale = enum(isize) {
    P = 15,
    T = 12,
@ -25,6 +41,18 @@ pub const UnitScale = enum(isize) {
    hour = 3_600,
    year = 31_536_000,
    // Imperial Length (Literal factors in meters)
    // 1 inch = 0.0254 meters. Since enum backing is isize,
    // we use a unique tag and handle the float in getFactor.
    inch = -1001,
    ft = -1002,
    yd = -1003,
    mi = -1004,
    oz = -1005, //  1 oz  = 28.3495231 g
    lb = -1006, //  1 lb  = 453.59237 g  (= 16 oz)
    st = -1007, //  1 stone = 6350.29318 g (= 14 lb)
    // Undefined
    _,
@ -32,34 +60,44 @@ pub const UnitScale = enum(isize) {
        var buf: [16]u8 = undefined;
        return switch (self) {
            inline .none => "",
-            inline .P, .T, .G, .M, .k, .h, .da, .d, .c, .m, .u, .n, .p, .f, .min, .hour, .year => @tagName(self),
+            inline .P, .T, .G, .M, .k, .h, .da, .d, .c, .m, .u, .n, .p, .f, .min, .hour, .year, .inch, .ft, .yd, .mi, .oz, .lb, .st => @tagName(self),
            else => std.fmt.bufPrint(&buf, "[{d}]", .{@intFromEnum(self)}) catch "[]", // This cannot be inline because of non exhaustive enum, but that's ok, it is just str, not calculation
        };
    }
    /// Helper to get the actual scaling factor
    pub inline fn getFactor(self: @This()) comptime_float {
-        return switch (self) {
+        return comptime switch (self) {
            // Standard SI Exponents
            inline .P, .T, .G, .M, .k, .h, .da, .none, .d, .c, .m, .u, .n, .p, .f => std.math.pow(f64, 10.0, @floatFromInt(@intFromEnum(self))),
            inline else => @floatFromInt(@intFromEnum(self)),
        };
    }
-    /// Helper to get the actual scaling factor in i32
+            // Time Factors
-    pub inline fn getFactorInt(self: @This()) comptime_int {
+            inline .min, .hour, .year => @floatFromInt(@intFromEnum(self)),
-        return switch (self) {
+
-            inline .P, .T, .G, .M, .k, .h, .da, .none, .d, .c, .m, .u, .n, .p, .f => comptime std.math.powi(i32, 10.0, @intFromEnum(self)) catch 0,
+            // Imperial Length (metres)
-            inline else => comptime @intFromEnum(self),
+            inline .inch => 0.0254,
            inline .ft => 0.3048,
            inline .yd => 0.9144,
            inline .mi => 1609.344,
            // Imperial Mass (grams — base unit for M is gram, i.e. .none = 1 g)
            inline .oz => 28.3495231,
            inline .lb => 453.59237,
            inline .st => 6350.29318,
            inline else => @floatFromInt(@intFromEnum(self)),
        };
    }
 };
-const Scales = @This();
+/// Maps each SI base dimension to its `UnitScale`. Stored and resolved entirely at comptime.
 const Self = @This();
 data: std.EnumArray(Dimension, UnitScale),
-pub fn init(comptime init_val: anytype) Scales {
+/// Create a `Scales` from a struct literal, e.g. `.{ .L = .k, .T = .hour }`.
-    comptime var s = Scales{ .data = std.EnumArray(Dimension, UnitScale).initFill(.none) };
+/// Unspecified dimensions default to `.none` (factor 1).
 pub fn init(comptime init_val: ArgOpts) Self {
    comptime var s = Self{ .data = std.EnumArray(Dimension, UnitScale).initFill(.none) };
    inline for (std.meta.fields(@TypeOf(init_val))) |f| {
        if (comptime hlp.isInt(@TypeOf(@field(init_val, f.name))))
            s.data.set(@field(Dimension, f.name), @enumFromInt(@field(init_val, f.name)))
@ -69,35 +107,36 @@ pub fn init(comptime init_val: anytype) Scales {
    return s;
 }
-pub fn initFill(comptime val: UnitScale) Scales {
+pub fn initFill(comptime val: UnitScale) Self {
    return comptime .{ .data = std.EnumArray(Dimension, UnitScale).initFill(val) };
 }
-pub fn get(comptime self: Scales, comptime key: Dimension) UnitScale {
+pub fn get(comptime self: Self, comptime key: Dimension) UnitScale {
    return comptime self.data.get(key);
 }
-pub fn set(comptime self: *Scales, comptime key: Dimension, comptime val: UnitScale) void {
+pub fn set(comptime self: *Self, comptime key: Dimension, comptime val: UnitScale) void {
    comptime self.data.set(key, val);
 }
-pub fn min(comptime s1: Scales, comptime s2: Scales) Scales {
+pub fn argsOpt(self: Self) ArgOpts {
-    comptime var out = Scales.initFill(.none);
+    var args: ArgOpts = undefined;
-    inline for (std.enums.values(Dimension)) |dim|
+    inline for (std.enums.values(Dimension)) |d|
-        out.set(dim, if (s1.get(dim).getFactorInt() > s2.get(dim).getFactorInt()) s2.get(dim) else s1.get(dim));
+        @field(args, @tagName(d)) = self.get(d);
-
+    return args;
    return out;
 }
-pub inline fn getFactor(comptime s: Scales, comptime d: Dimensions) comptime_float {
+/// Compute the combined scale factor for a given dimension signature.
-    comptime var factor: f64 = 1.0;
+/// Each dimension's prefix is raised to its exponent and multiplied together.
-    inline for (std.enums.values(Dimension)) |dim| {
+pub inline fn getFactor(comptime s: Self, comptime d: Dimensions) comptime_float {
-        const power = d.get(dim);
+    var factor: f64 = 1.0;
    for (std.enums.values(Dimension)) |dim| {
        const power = comptime d.get(dim);
        if (power == 0) continue;
        const base = s.get(dim).getFactor();
-        var i: i32 = 0;
+        var i: comptime_int = 0;
        const abs_power = if (power < 0) -power else power;
        while (i < abs_power) : (i += 1) {
            if (power > 0)
@ -106,5 +145,5 @@ pub inline fn getFactor(comptime s: Scales, comptime d: Dimensions) comptime_flo
                factor /= base;
        }
    }
-    return factor;
+    return comptime factor;
 }
--- a/src/Vector.zig
+++ b/src/Vector.zig
@ -1,318 +0,0 @@
 const std = @import("std");
 const hlp = @import("helper.zig");
 const Scalar = @import("Scalar.zig").Scalar;
 const Scales = @import("Scales.zig");
 const UnitScale = Scales.UnitScale;
 const Dimensions = @import("Dimensions.zig");
 const Dimension = Dimensions.Dimension;
 pub fn Vector(comptime len: usize, comptime Q: type) type {
    const T = Q.ValueType;
    const d: Dimensions = Q.dims;
    const s: Scales = Q.scales;
    return struct {
        data: [len]T,
        const Self = @This();
        pub const ScalarType = Q;
        pub const ValueType = T;
        pub const dims: Dimensions = d;
        pub const scales = s;
        pub const zero = initDefault(0);
        pub const one = initDefault(1);
        pub fn initDefault(v: T) Self {
            var data: [len]T = undefined;
            inline for (&data) |*item| item.* = v;
            return .{ .data = data };
        }
        pub inline fn add(self: Self, rhs: anytype) Vector(len, Scalar(T, d, s.min(@TypeOf(rhs).scales))) {
            const Tr = @TypeOf(rhs);
            var res: Vector(len, Scalar(T, d, s.min(Tr.scales))) = undefined;
            inline for (self.data, 0..) |v, i| {
                const q = (Q{ .value = v }).add(Tr.ScalarType{ .value = rhs.data[i] });
                res.data[i] = q.value;
            }
            return res;
        }
        pub inline fn sub(self: Self, rhs: anytype) Vector(len, Scalar(T, d, s.min(@TypeOf(rhs).scales))) {
            const Tr = @TypeOf(rhs);
            var res: Vector(len, Scalar(T, d, s.min(Tr.scales))) = undefined;
            inline for (self.data, 0..) |v, i| {
                const q = (Q{ .value = v }).sub(Tr.ScalarType{ .value = rhs.data[i] });
                res.data[i] = q.value;
            }
            return res;
        }
        pub inline fn divBy(
            self: Self,
            rhs: anytype,
        ) Vector(len, Scalar(T, d.sub(@TypeOf(rhs).dims), s.min(@TypeOf(rhs).scales))) {
            const Tr = @TypeOf(rhs);
            var res: Vector(len, Scalar(T, d.sub(Tr.dims), s.min(Tr.scales))) = undefined;
            inline for (self.data, 0..) |v, i| {
                const q = (Q{ .value = v }).divBy(Tr.ScalarType{ .value = rhs.data[i] });
                res.data[i] = q.value;
            }
            return res;
        }
        pub inline fn mulBy(
            self: Self,
            rhs: anytype,
        ) Vector(len, Scalar(T, d.add(@TypeOf(rhs).dims), s.min(@TypeOf(rhs).scales))) {
            const Tr = @TypeOf(rhs);
            var res: Vector(len, Scalar(T, d.add(Tr.dims), s.min(Tr.scales))) = undefined;
            inline for (self.data, 0..) |v, i| {
                const q = (Q{ .value = v }).mulBy(Tr.ScalarType{ .value = rhs.data[i] });
                res.data[i] = q.value;
            }
            return res;
        }
        pub inline fn divByScalar(
            self: Self,
            scalar: anytype,
        ) Vector(len, Scalar(T, d.sub(@TypeOf(scalar).dims), s.min(@TypeOf(scalar).scales))) {
            var res: Vector(len, Scalar(T, d.sub(@TypeOf(scalar).dims), s.min(@TypeOf(scalar).scales))) = undefined;
            inline for (self.data, 0..) |v, i| {
                const q = Q{ .value = v };
                res.data[i] = q.divBy(scalar).value;
            }
            return res;
        }
        pub inline fn mulByScalar(
            self: Self,
            scalar: anytype,
        ) Vector(len, Scalar(T, d.add(@TypeOf(scalar).dims), s.min(@TypeOf(scalar).scales))) {
            var res: Vector(len, Scalar(T, d.add(@TypeOf(scalar).dims), s.min(@TypeOf(scalar).scales))) = undefined;
            inline for (self.data, 0..) |v, i| {
                const q = Q{ .value = v };
                res.data[i] = q.mulBy(scalar).value;
            }
            return res;
        }
        pub fn negate(self: Self) Self {
            var res: Self = undefined;
            inline for (self.data, 0..) |v, i| {
                res.data[i] = -v;
            }
            return res;
        }
        pub inline fn to(self: Self, comptime DestQ: type) Vector(len, DestQ) {
            var res: Vector(len, DestQ) = undefined;
            inline for (self.data, 0..) |v, i| {
                res.data[i] = (Q{ .value = v }).to(DestQ).value;
            }
            return res;
        }
        pub inline fn lengthSqr(self: Self) T {
            var sum: T = 0;
            inline for (self.data) |v| {
                sum += v * v;
            }
            return sum;
        }
        pub inline fn length(self: Self) T {
            const len_sq = self.lengthSqr();
            if (comptime @typeInfo(T) == .int) {
                // Construct the unsigned equivalent of T at comptime (e.g., i32 -> u32)
                const UnsignedT = @Int(.unsigned, @typeInfo(T).int.bits);
                // len_sq is always positive, so @intCast is perfectly safe
                const u_len_sq = @as(UnsignedT, @intCast(len_sq));
                return @as(T, @intCast(std.math.sqrt(u_len_sq)));
            } else {
                return @sqrt(len_sq);
            }
        }
        pub fn formatNumber(
            self: Self,
            writer: *std.Io.Writer,
            options: std.fmt.Number,
        ) !void {
            try writer.writeAll("(");
            for (self.data, 0..) |v, i| {
                if (i > 0) try writer.writeAll(", ");
                switch (@typeInfo(T)) {
                    .float, .comptime_float => try writer.printFloat(v, options),
                    .int, .comptime_int => try writer.printInt(v, 10, .lower, .{
                        .width = options.width,
                        .alignment = options.alignment,
                        .fill = options.fill,
                        .precision = options.precision,
                    }),
                    else => unreachable,
                }
            }
            try writer.writeAll(")");
            var first = true;
            inline for (std.enums.values(Dimension)) |bu| {
                const v = dims.get(bu);
                if (comptime v == 0) continue;
                if (!first)
                    try writer.writeAll(".");
                first = false;
                const uscale = scales.get(bu);
                if (bu == .T and (uscale == .min or uscale == .hour or uscale == .year))
                    try writer.print("{s}", .{uscale.str()})
                else
                    try writer.print("{s}{s}", .{ uscale.str(), bu.unit() });
                if (v != 1)
                    try hlp.printSuperscript(writer, v);
            }
        }
    };
 }
 test "Format VectorX" {
    const MeterPerSecondSq = Scalar(
        f32,
        Dimensions.init(.{ .L = 1, .T = -2 }),
        Scales.init(.{ .T = .n }),
    );
    const KgMeterPerSecond = Scalar(
        f32,
        Dimensions.init(.{ .M = 1, .L = 1, .T = -1 }),
        Scales.init(.{ .M = .k }),
    );
    const accel = MeterPerSecondSq.Vec3.initDefault(9.81);
    const momentum = KgMeterPerSecond.Vec3{ .data = .{ 43, 0, 11 } };
    var buf: [64]u8 = undefined;
    var res = try std.fmt.bufPrint(&buf, "{d}", .{accel});
    try std.testing.expectEqualStrings("(9.81, 9.81, 9.81)m.ns⁻²", res);
    res = try std.fmt.bufPrint(&buf, "{d:.2}", .{momentum});
    try std.testing.expectEqualStrings("(43.00, 0.00, 11.00)m.kg.s⁻¹", res);
 }
 test "VecX Init and Basic Arithmetic" {
    const Meter = Scalar(i32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const Vec3M = Meter.Vec3;
    // Test zero, one, initDefault
    const v_zero = Vec3M.zero;
    try std.testing.expectEqual(0, v_zero.data[0]);
    try std.testing.expectEqual(0, v_zero.data[1]);
    try std.testing.expectEqual(0, v_zero.data[2]);
    const v_one = Vec3M.one;
    try std.testing.expectEqual(1, v_one.data[0]);
    try std.testing.expectEqual(1, v_one.data[1]);
    try std.testing.expectEqual(1, v_one.data[2]);
    const v_def = Vec3M.initDefault(5);
    try std.testing.expectEqual(5, v_def.data[0]);
    try std.testing.expectEqual(5, v_def.data[1]);
    try std.testing.expectEqual(5, v_def.data[2]);
    // Test add and sub
    const v1 = Vec3M{ .data = .{ 10, 20, 30 } };
    const v2 = Vec3M{ .data = .{ 2, 4, 6 } };
    const added = v1.add(v2);
    try std.testing.expectEqual(12, added.data[0]);
    try std.testing.expectEqual(24, added.data[1]);
    try std.testing.expectEqual(36, added.data[2]);
    const subbed = v1.sub(v2);
    try std.testing.expectEqual(8, subbed.data[0]);
    try std.testing.expectEqual(16, subbed.data[1]);
    try std.testing.expectEqual(24, subbed.data[2]);
    // Test negate
    const neg = v1.negate();
    try std.testing.expectEqual(-10, neg.data[0]);
    try std.testing.expectEqual(-20, neg.data[1]);
    try std.testing.expectEqual(-30, neg.data[2]);
 }
 test "VecX Kinematics (Scalar Mul/Div)" {
    const Meter = Scalar(i32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const Second = Scalar(i32, Dimensions.init(.{ .T = 1 }), Scales.init(.{}));
    const Vec3M = Meter.Vec3;
    const pos = Vec3M{ .data = .{ 100, 200, 300 } };
    const time = Second{ .value = 10 };
    // Vector divided by scalar (Velocity = Position / Time)
    const vel = pos.divByScalar(time);
    try std.testing.expectEqual(10, vel.data[0]);
    try std.testing.expectEqual(20, vel.data[1]);
    try std.testing.expectEqual(30, vel.data[2]);
    try std.testing.expectEqual(1, @TypeOf(vel).dims.get(.L));
    try std.testing.expectEqual(-1, @TypeOf(vel).dims.get(.T));
    // Vector multiplied by scalar (Position = Velocity * Time)
    const new_pos = vel.mulByScalar(time);
    try std.testing.expectEqual(100, new_pos.data[0]);
    try std.testing.expectEqual(200, new_pos.data[1]);
    try std.testing.expectEqual(300, new_pos.data[2]);
    try std.testing.expectEqual(1, @TypeOf(new_pos).dims.get(.L));
    try std.testing.expectEqual(0, @TypeOf(new_pos).dims.get(.T));
 }
 test "VecX Element-wise Math and Scaling" {
    const Meter = Scalar(i32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const Vec3M = Meter.Vec3;
    const v1 = Vec3M{ .data = .{ 10, 20, 30 } };
    const v2 = Vec3M{ .data = .{ 2, 5, 10 } };
    // Element-wise division
    const div = v1.divBy(v2);
    try std.testing.expectEqual(5, div.data[0]);
    try std.testing.expectEqual(4, div.data[1]);
    try std.testing.expectEqual(3, div.data[2]);
    try std.testing.expectEqual(0, @TypeOf(div).dims.get(.L)); // M / M = Dimensionless
 }
 test "VecX Conversions" {
    const KiloMeter = Scalar(i32, Dimensions.init(.{ .L = 1 }), Scales.init(.{ .L = .k }));
    const Meter = Scalar(i32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const v_km = KiloMeter.Vec3{ .data = .{ 1, 2, 3 } };
    const v_m = v_km.to(Meter);
    try std.testing.expectEqual(1000, v_m.data[0]);
    try std.testing.expectEqual(2000, v_m.data[1]);
    try std.testing.expectEqual(3000, v_m.data[2]);
    // Type checking the result
    try std.testing.expectEqual(1, @TypeOf(v_m).dims.get(.L));
    try std.testing.expectEqual(UnitScale.none, @TypeOf(v_m).scales.get(.L));
 }
 test "VecX Length" {
    const MeterInt = Scalar(i32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    const MeterFloat = Scalar(f32, Dimensions.init(.{ .L = 1 }), Scales.init(.{}));
    // Integer length (using your custom isqrt)
    // 3-4-5 triangle on XY plane
    const v_int = MeterInt.Vec3{ .data = .{ 3, 4, 0 } };
    try std.testing.expectEqual(25, v_int.lengthSqr());
    try std.testing.expectEqual(5, v_int.length());
    // Float length
    const v_float = MeterFloat.Vec3{ .data = .{ 3.0, 4.0, 0.0 } };
    try std.testing.expectApproxEqAbs(@as(f32, 25.0), v_float.lengthSqr(), 1e-4);
    try std.testing.expectApproxEqAbs(@as(f32, 5.0), v_float.length(), 1e-4);
 }
--- a/src/benchmark.zig
+++ b/src/benchmark.zig
@ -1,7 +1,7 @@
 const std = @import("std");
 const Io = std.Io;
-const Scalar = @import("Scalar.zig").Scalar;
+const Scalar = @import("Quantity.zig").Scalar;
-const Vector = @import("Vector.zig").Vector;
+const Vector = @import("Quantity.zig").Vector;
 var io: Io = undefined;
 pub fn main(init: std.process.Init) !void {
@ -11,6 +11,17 @@ pub fn main(init: std.process.Init) !void {
    io = init.io;
    // try vectorSIMDvsNative(f64, &stdout_writer.interface);
    // try stdout_writer.flush();
    // try vectorSIMDvsNative(f32, &stdout_writer.interface);
    // try stdout_writer.flush();
    // try vectorSIMDvsNative(i32, &stdout_writer.interface);
    // try stdout_writer.flush();
    // try vectorSIMDvsNative(i64, &stdout_writer.interface);
    // try stdout_writer.flush();
    // try vectorSIMDvsNative(i128, &stdout_writer.interface);
    // try stdout_writer.flush();
    try bench_Scalar(&stdout_writer.interface);
    try stdout_writer.flush();
    try bench_vsNative(&stdout_writer.interface);
@ -78,17 +89,17 @@ fn bench_Scalar(writer: *std.Io.Writer) !void {
        \\
    , .{ ITERS, SAMPLES });
-    const Types = .{ i16, i32, i64, i128, i256, f32, f64, f128 };
+    const Types = .{ i16, i32, i64, i128, i256, f32, f64 };
-    const TNames = .{ "i16", "i32", "i64", "i128", "i256", "f32", "f64", "f128" };
+    const TNames = .{ "i16", "i32", "i64", "i128", "i256", "f32", "f64" };
-    const Ops = .{ "add", "sub", "mulBy", "divBy", "to" };
+    const Ops = .{ "add", "sub", "mul", "div", "to", "abs", "pow", "eq", "gt", "mul(n)" };
    var results_matrix: [Ops.len][Types.len]f64 = undefined;
    comptime var tidx: usize = 0;
    inline for (Types, TNames) |T, tname| {
-        const M = Scalar(T, .init(.{ .L = 1 }), .init(.{}));
+        const M = Scalar(T, .{ .L = 1 }, .{});
-        const KM = Scalar(T, .init(.{ .L = 1 }), .init(.{ .L = .k }));
+        const KM = Scalar(T, .{ .L = 1 }, .{ .L = .k });
-        const S = Scalar(T, .init(.{ .T = 1 }), .init(.{}));
+        const S = Scalar(T, .{ .T = 1 }, .{});
        inline for (Ops, 0..) |op_name, oidx| {
            var samples: [SAMPLES]f64 = undefined;
@ -100,15 +111,23 @@ fn bench_Scalar(writer: *std.Io.Writer) !void {
                    std.mem.doNotOptimizeAway(
                        {
                            _ = if (comptime std.mem.eql(u8, op_name, "add"))
-                                (M{ .value = getVal(T, i, 63) }).add(M{ .value = getVal(T, i +% 7, 63) })
+                                (M.splat(getVal(T, i, 63))).add(M.splat(getVal(T, i +% 7, 63)))
                            else if (comptime std.mem.eql(u8, op_name, "sub"))
-                                (M{ .value = getVal(T, i +% 10, 63) }).sub(M{ .value = getVal(T, i, 63) })
+                                (M.splat(getVal(T, i +% 10, 63))).sub(M.splat(getVal(T, i, 63)))
-                            else if (comptime std.mem.eql(u8, op_name, "mulBy"))
+                            else if (comptime std.mem.eql(u8, op_name, "mul"))
-                                (M{ .value = getVal(T, i, 63) }).mulBy(M{ .value = getVal(T, i +% 1, 63) })
+                                (M.splat(getVal(T, i, 63))).mul(M.splat(getVal(T, i +% 1, 63)))
-                            else if (comptime std.mem.eql(u8, op_name, "divBy"))
+                            else if (comptime std.mem.eql(u8, op_name, "div"))
-                                (M{ .value = getVal(T, i +% 10, 63) }).divBy(S{ .value = getVal(T, i, 63) })
+                                (M.splat(getVal(T, i +% 10, 63))).div(S.splat(getVal(T, i, 63)))
                            else if (comptime std.mem.eql(u8, op_name, "to"))
                                (KM.splat(getVal(T, i, 15))).to(M)
                            else if (comptime std.mem.eql(u8, op_name, "abs"))
                                (M.splat(getVal(T, i, 63))).abs()
                            else if (comptime std.mem.eql(u8, op_name, "eq"))
                                (M.splat(getVal(T, i, 63))).eq(M.splat(getVal(T, i +% 3, 63)))
                            else if (comptime std.mem.eql(u8, op_name, "gt"))
                                (M.splat(getVal(T, i, 63))).gt(M.splat(getVal(T, i +% 3, 63)))
                            else
-                                (KM{ .value = getVal(T, i, 15) }).to(M);
+                                (M.splat(getVal(T, i, 63))).mul(3);
                        },
                    );
                }
@ -133,9 +152,9 @@ fn bench_Scalar(writer: *std.Io.Writer) !void {
    try writer.print("└───────────────────┴──────┴─────────────────────┴─────────────────────┘\n\n", .{});
    try writer.print("Median Summary (ns/op):\n", .{});
-    try writer.print("┌──────────────┬───────┬───────┬───────┬───────┬───────┬───────┬───────┬───────┐\n", .{});
+    try writer.print("┌──────────────┬───────┬───────┬───────┬───────┬───────┬───────┬───────┐\n", .{});
-    try writer.print("│  Operation   │  i16  │  i32  │  i64  │  i128 │  i256 │  f32  │  f64  │  f128 │\n", .{});
+    try writer.print("│  Operation   │  i16  │  i32  │  i64  │  i128 │  i256 │  f32  │  f64  │\n", .{});
-    try writer.print("├──────────────┼───────┼───────┼───────┼───────┼───────┼───────┼───────┼───────┤\n", .{});
+    try writer.print("├──────────────┼───────┼───────┼───────┼───────┼───────┼───────┼───────┤\n", .{});
    inline for (Ops, 0..) |op_name, oidx| {
        try writer.print("│  {s:<11} │", .{op_name});
@ -146,14 +165,13 @@ fn bench_Scalar(writer: *std.Io.Writer) !void {
        try writer.print("\n", .{});
    }
-    try writer.print("└──────────────┴───────┴───────┴───────┴───────┴───────┴───────┴───────┴───────┘\n", .{});
+    try writer.print("└──────────────┴───────┴───────┴───────┴───────┴───────┴───────┴───────┘\n", .{});
 }
 fn bench_vsNative(writer: *std.Io.Writer) !void {
    const ITERS: usize = 100_000;
    const SAMPLES: usize = 5;
    // Helper to safely get a value of type T from a loop index
    const getValT = struct {
        fn f(comptime TT: type, i: usize) TT {
            const v = (i % 100) + 1;
@ -163,7 +181,8 @@ fn bench_vsNative(writer: *std.Io.Writer) !void {
    const Types = .{ i32, i64, i128, f32, f64 };
    const TNames = .{ "i32", "i64", "i128", "f32", "f64" };
-    const Ops = .{ "add", "mulBy", "divBy" };
+    // Expanded Ops to match bench_Scalar
    const Ops = .{ "add", "sub", "mul", "div", "abs", "eq", "gt" };
    try writer.print(
        \\
@ -180,8 +199,8 @@ fn bench_vsNative(writer: *std.Io.Writer) !void {
            var native_total_ns: f64 = 0;
            var quantity_total_ns: f64 = 0;
-            const M = Scalar(T, .init(.{ .L = 1 }), .init(.{}));
+            const M = Scalar(T, .{ .L = 1 }, .{});
-            const S = Scalar(T, .init(.{ .T = 1 }), .init(.{}));
+            const S = Scalar(T, .{ .T = 1 }, .{});
            std.mem.doNotOptimizeAway({
                for (0..SAMPLES) |_| {
@ -190,11 +209,24 @@ fn bench_vsNative(writer: *std.Io.Writer) !void {
                    for (0..ITERS) |i| {
                        const a = getValT(T, i);
                        const b = getValT(T, 2);
                        // Native logic branch
                        _ = if (comptime std.mem.eql(u8, op_name, "add"))
                            a + b
-                        else if (comptime std.mem.eql(u8, op_name, "mulBy"))
+                        else if (comptime std.mem.eql(u8, op_name, "sub"))
                            a - b
                        else if (comptime std.mem.eql(u8, op_name, "mul"))
                            a * b
-                        else if (comptime @typeInfo(T) == .int) @divTrunc(a, b) else a / b;
+                        else if (comptime std.mem.eql(u8, op_name, "div"))
                            if (comptime @typeInfo(T) == .int) @divTrunc(a, b) else a / b
                        else if (comptime std.mem.eql(u8, op_name, "abs"))
                            if (comptime @typeInfo(T) == .int) @abs(a) else @as(T, @abs(a))
                        else if (comptime std.mem.eql(u8, op_name, "eq"))
                            a == b
                        else if (comptime std.mem.eql(u8, op_name, "gt"))
                            a > b
                        else
                            unreachable;
                    }
                    const n_end = getTime();
                    native_total_ns += @as(f64, @floatFromInt(n_start.durationTo(n_end).toNanoseconds()));
@ -202,15 +234,26 @@ fn bench_vsNative(writer: *std.Io.Writer) !void {
                    // --- 2. Benchmark Scalar ---
                    const q_start = getTime();
                    for (0..ITERS) |i| {
-                        const qa = M{ .value = getValT(T, i) };
+                        const qa = M.splat(getValT(T, i));
-                        const qb = if (comptime std.mem.eql(u8, op_name, "divBy")) S{ .value = getValT(T, 2) } else M{ .value = getValT(T, 2) };
+                        const qb = if (comptime std.mem.eql(u8, op_name, "div")) S.splat(getValT(T, 2)) else M.splat(getValT(T, 2));
                        // Scalar logic branch
                        _ = if (comptime std.mem.eql(u8, op_name, "add"))
                            qa.add(qb)
-                        else if (comptime std.mem.eql(u8, op_name, "mulBy"))
+                        else if (comptime std.mem.eql(u8, op_name, "sub"))
-                            qa.mulBy(qb)
+                            qa.sub(qb)
                        else if (comptime std.mem.eql(u8, op_name, "mul"))
                            qa.mul(qb)
                        else if (comptime std.mem.eql(u8, op_name, "div"))
                            qa.div(qb)
                        else if (comptime std.mem.eql(u8, op_name, "abs"))
                            qa.abs()
                        else if (comptime std.mem.eql(u8, op_name, "eq"))
                            qa.eq(qb)
                        else if (comptime std.mem.eql(u8, op_name, "gt"))
                            qa.gt(qb)
                        else
-                            qa.divBy(qb);
+                            unreachable;
                    }
                    const q_end = getTime();
                    quantity_total_ns += @as(f64, @floatFromInt(q_start.durationTo(q_end).toNanoseconds()));
@ -260,7 +303,7 @@ fn bench_crossTypeVsNative(writer: *std.Io.Writer) !void {
    const Types = .{ i16, i64, i128, f32, f64 };
    const TNames = .{ "i16", "i64", "i128", "f32", "f64" };
-    const Ops = .{ "add", "mulBy", "divBy" };
+    const Ops = .{ "add", "mul", "div" };
    try writer.print(
        \\
@ -278,9 +321,9 @@ fn bench_crossTypeVsNative(writer: *std.Io.Writer) !void {
                var native_total_ns: f64 = 0;
                var quantity_total_ns: f64 = 0;
-                const M1 = Scalar(T1, .init(.{ .L = 1 }), .init(.{}));
+                const M1 = Scalar(T1, .{ .L = 1 }, .{});
-                const M2 = Scalar(T2, .init(.{ .L = 1 }), .init(.{}));
+                const M2 = Scalar(T2, .{ .L = 1 }, .{});
-                const S2 = Scalar(T2, .init(.{ .T = 1 }), .init(.{}));
+                const S2 = Scalar(T2, .{ .T = 1 }, .{});
                std.mem.doNotOptimizeAway({
                    for (0..SAMPLES) |_| {
@ -293,7 +336,7 @@ fn bench_crossTypeVsNative(writer: *std.Io.Writer) !void {
                            _ = if (comptime std.mem.eql(u8, op_name, "add"))
                                a + b
-                            else if (comptime std.mem.eql(u8, op_name, "mulBy"))
+                            else if (comptime std.mem.eql(u8, op_name, "mul"))
                                a * b
                            else if (comptime @typeInfo(T1) == .int)
                                @divTrunc(a, b)
@ -306,18 +349,18 @@ fn bench_crossTypeVsNative(writer: *std.Io.Writer) !void {
                        // --- 2. Benchmark Scalar ---
                        const q_start = getTime();
                        for (0..ITERS) |i| {
-                            const qa = M1{ .value = getValT(T1, i) };
+                            const qa = M1.splat(getValT(T1, i));
-                            const qb = if (comptime std.mem.eql(u8, op_name, "divBy"))
+                            const qb = if (comptime std.mem.eql(u8, op_name, "div"))
-                                S2{ .value = getValT(T2, 2) }
+                                S2.splat(getValT(T2, 2))
                            else
-                                M2{ .value = getValT(T2, 2) };
+                                M2.splat(getValT(T2, 2));
                            _ = if (comptime std.mem.eql(u8, op_name, "add"))
                                qa.add(qb)
-                            else if (comptime std.mem.eql(u8, op_name, "mulBy"))
+                            else if (comptime std.mem.eql(u8, op_name, "mul"))
-                                qa.mulBy(qb)
+                                qa.mul(qb)
                            else
-                                qa.divBy(qb);
+                                qa.div(qb);
                        }
                        const q_end = getTime();
                        quantity_total_ns += @as(f64, @floatFromInt(q_start.durationTo(q_end).toNanoseconds()));
@ -367,44 +410,63 @@ fn bench_Vector(writer: *std.Io.Writer) !void {
    try writer.print(
        \\
        \\ Vector<N, T> benchmark — {d} iterations, {d} samples/cell
-        \\ (Results in ns/op)
+        \\ (Results in ns/op; "---" = not applicable for this length)
        \\
-        \\┌─────────────┬──────┬─────────┬─────────┬─────────┐
+        \\┌──────────────────┬──────┬─────────┬─────────┬─────────┬─────────┬─────────┐
-        \\│ Operation   │ Type │   Len=3 │   Len=4 │  Len=16 │
+        \\│ Operation        │ Type │   Len=1 │   Len=3 │   Len=4 │  Len=16 │ Len=100 │
-        \\├─────────────┼──────┼─────────┼─────────┼─────────┤
+        \\├──────────────────┼──────┼─────────┼─────────┼─────────┼─────────┼─────────┤
        \\
    , .{ ITERS, SAMPLES });
    const Types = .{ i32, i64, i128, f32, f64 };
    const TNames = .{ "i32", "i64", "i128", "f32", "f64" };
-    const Lengths = .{ 3, 4, 16 };
+    const Lengths = .{ 1, 3, 4, 16, 100 };
-    const Ops = .{ "add", "divBy", "mulByScalar", "length" };
+    // "cross" is only valid for len=3; other cells will show "  ---  "
    const Ops = .{ "add", "div", "mulScalar", "dot", "cross", "product", "pow", "length" };
    inline for (Ops, 0..) |op_name, o_idx| {
        inline for (Types, TNames) |T, tname| {
-            try writer.print("│ {s:<11} │ {s:<4} │", .{ op_name, tname });
+            try writer.print("│ {s:<16} │ {s:<4} │", .{ op_name, tname });
            inline for (Lengths) |len| {
-                const Q_base = Scalar(T, .init(.{ .L = 1 }), .init(.{}));
+                const Q_base = Scalar(T, .{ .L = 1 }, .{});
-                const Q_time = Scalar(T, .init(.{ .T = 1 }), .init(.{}));
+                const Q_time = Scalar(T, .{ .T = 1 }, .{});
                const V = Vector(len, Q_base);
                // cross product is only defined for len == 3
                const is_cross = comptime std.mem.eql(u8, op_name, "cross");
                if (comptime is_cross and len != 3) {
                    try writer.print("     --- │", .{});
                    continue;
                }
                var samples: [SAMPLES]f64 = undefined;
                std.mem.doNotOptimizeAway({
                    for (0..SAMPLES) |s_idx| {
                        const t_start = getTime();
                        for (0..ITERS) |i| {
-                            const v1 = V.initDefault(getVal(T, i, 63));
+                            const v1 = V.splat(getVal(T, i, 63));
                            if (comptime std.mem.eql(u8, op_name, "add")) {
-                                const v2 = V.initDefault(getVal(T, i +% 7, 63));
+                                const v2 = V.splat(getVal(T, i +% 7, 63));
                                _ = v1.add(v2);
-                            } else if (comptime std.mem.eql(u8, op_name, "divBy")) {
+                            } else if (comptime std.mem.eql(u8, op_name, "div")) {
-                                _ = v1.divBy(V.initDefault(getVal(T, i +% 2, 63)));
+                                _ = v1.div(V.splat(getVal(T, i +% 2, 63)));
-                            } else if (comptime std.mem.eql(u8, op_name, "mulByScalar")) {
+                            } else if (comptime std.mem.eql(u8, op_name, "mulScalar")) {
-                                const s_val = Q_time{ .value = getVal(T, i +% 2, 63) };
+                                const s_val = Q_time.splat(getVal(T, i +% 2, 63));
-                                _ = v1.mulByScalar(s_val);
+                                _ = v1.mulScalar(s_val);
                            } else if (comptime std.mem.eql(u8, op_name, "dot")) {
                                const v2 = V.splat(getVal(T, i +% 5, 63));
                                _ = v1.dot(v2);
                            } else if (comptime std.mem.eql(u8, op_name, "cross")) {
                                // len == 3 guaranteed by the guard above
                                const v2 = V.splat(getVal(T, i +% 5, 63));
                                _ = v1.cross(v2);
                            } else if (comptime std.mem.eql(u8, op_name, "product")) {
                                _ = v1.product();
                            } else if (comptime std.mem.eql(u8, op_name, "pow")) {
                                _ = v1.pow(2);
                            } else if (comptime std.mem.eql(u8, op_name, "length")) {
                                _ = v1.length();
                            }
@ -422,8 +484,67 @@ fn bench_Vector(writer: *std.Io.Writer) !void {
        }
        if (o_idx < Ops.len - 1) {
-            try writer.print("├─────────────┼──────┼─────────┼─────────┼─────────┤\n", .{});
+            try writer.print("├──────────────────┼──────┼─────────┼─────────┼─────────┼─────────┼─────────┤\n", .{});
        }
    }
-    try writer.print("└─────────────┴──────┴─────────┴─────────┴─────────┘\n", .{});
+    try writer.print("└──────────────────┴──────┴─────────┴─────────┴─────────┴─────────┴─────────┘\n", .{});
 }
 fn vectorSIMDvsNative(comptime T: type, writer: *std.Io.Writer) !void {
    const iterations: u64 = 10_000;
    const lens = [_]u32{ 1, 2, 3, 4, 5, 10, 100, 1_000, 10_000 };
    try writer.print("\nSIMD Speedup Analysis: {s}\n", .{@typeName(T)});
    try writer.print("┌────────────┬────────────┬────────────┬────────────┐\n", .{});
    try writer.print("│ Vector Len │ Scalar (us)│ Vector (us)│ Speedup    │\n", .{});
    try writer.print("├────────────┼────────────┼────────────┼────────────┤\n", .{});
    inline for (lens) |vector_len| {
        // --- Scalar Test ---
        var scalar_val: T = 10;
        const start_scalar = getTime();
        var i: u64 = 0;
        while (i < iterations * vector_len) : (i += 1) {
            if (comptime @typeInfo(T) == .int)
                scalar_val = scalar_val +% 1
            else
                scalar_val = scalar_val + 1;
        }
        const scalar_time = start_scalar.durationTo(getTime()).toMicroseconds();
        // --- Vector Test ---
        var vector_val: @Vector(vector_len, T) = @splat(20);
        const start_vector = getTime();
        i = 0;
        const increment: @Vector(vector_len, T) = @splat(1);
        while (i < iterations) : (i += 1) {
            if (comptime @typeInfo(T) == .int)
                vector_val = vector_val +% increment
            else
                vector_val = vector_val + increment;
        }
        const vector_time = start_vector.durationTo(getTime()).toMicroseconds();
        // --- Results ---
        const s_float = @as(f64, @floatFromInt(scalar_time));
        const v_float = @as(f64, @floatFromInt(vector_time));
        // Speedup = ScalarTime / VectorTime.
        // > 1.0 means SIMD is faster.
        const speedup = if (vector_time > 0) s_float / v_float else 0;
        try writer.print("│ {d:<10} │ {d:>10} │ {d:>10} │ {d:>9.2}x │\n", .{
            vector_len,
            scalar_time,
            vector_time,
            speedup,
        });
        try writer.flush();
        std.mem.doNotOptimizeAway(scalar_val);
        std.mem.doNotOptimizeAway(vector_val);
    }
    try writer.print("└────────────┴────────────┴────────────┴────────────┘\n", .{});
 }
--- a/src/helper.zig
+++ b/src/helper.zig
@ -30,3 +30,68 @@ pub fn printSuperscript(writer: *std.Io.Writer, n: i32) !void {
        try writer.writeAll(s);
    }
 }
 const Scales = @import("Scales.zig");
 const Dimensions = @import("Dimensions.zig");
 const Dimension = @import("Dimensions.zig").Dimension;
 pub fn finerScales(comptime T1: type, comptime T2: type) Scales {
    const d1: Dimensions = T1.dims;
    const d2: Dimensions = T2.dims;
    const s1: Scales = T1.scales;
    const s2: Scales = T2.scales;
    comptime var out = Scales.initFill(.none);
    inline for (std.enums.values(Dimension)) |dim| {
        const scale1 = comptime s1.get(dim);
        const scale2 = comptime s2.get(dim);
        out.set(dim, if (comptime d1.get(dim) == 0 and d2.get(dim) == 0)
            .none
        else if (comptime d1.get(dim) == 0)
            scale2
        else if (comptime d2.get(dim) == 0)
            scale1
        else if (comptime scale1.getFactor() > scale2.getFactor())
            scale2
        else
            scale1);
    }
    comptime return out;
 }
 // ---------------------------------------------------------------------------
 // RHS normalisation helpers
 // ---------------------------------------------------------------------------
 const Quantity = @import("Quantity.zig").Quantity;
 /// Returns true if `T` is a `Scalar_` type (has `dims`, `scales`, and `value`).
 pub fn isScalarType(comptime T: type) bool {
    return @typeInfo(T) == .@"struct" and
        @hasDecl(T, "ISQUANTITY") and
        @field(T, "ISQUANTITY");
 }
 /// Resolve the Scalar type that `rhs` will be treated as.
 ///
 /// Accepted rhs types:
 ///   - Any `Scalar_` type               → returned as-is
 ///   - `comptime_int` / `comptime_float` → dimensionless `Scalar_(BaseT, {}, {})`
 ///   - `BaseT` (the scalar's value type) → dimensionless `Scalar_(BaseT, {}, {})`
 ///
 /// Everything else is a compile error, including other int/float types.
 pub fn rhsQuantityType(comptime ValueType: type, N: usize, comptime RhsT: type) type {
    if (comptime isScalarType(RhsT)) return RhsT;
    if (comptime RhsT == comptime_int or RhsT == comptime_float or RhsT == ValueType)
        return Quantity(ValueType, N, .{}, .{});
    @compileError(
        "rhs must be a Scalar, " ++ @typeName(ValueType) ++
            ", comptime_int, or comptime_float; got " ++ @typeName(RhsT),
    );
 }
 /// Convert `rhs` to its normalised Scalar form (see `rhsScalarType`).
 pub inline fn toRhsQuantity(comptime BaseT: type, N: usize, rhs: anytype) rhsQuantityType(BaseT, N, @TypeOf(rhs)) {
    if (comptime isScalarType(@TypeOf(rhs))) return rhs;
    const DimLess = Quantity(BaseT, N, .{}, .{});
    return DimLess{ .data = @splat(@as(BaseT, rhs)) };
 }
--- a/src/main.zig
+++ b/src/main.zig
@ -1,14 +1,13 @@
 const std = @import("std");
-pub const Scalar = @import("Scalar.zig").Scalar;
+pub const Vector = @import("Quantity.zig").Vector;
-pub const Vector = @import("Vector.zig").Vector;
+pub const Scalar = @import("Quantity.zig").Scalar;
 pub const Dimensions = @import("Dimensions.zig");
 pub const Scales = @import("Scales.zig");
 pub const Base = @import("Base.zig");
 test {
-    _ = @import("Scalar.zig");
+    _ = @import("Quantity.zig");
    _ = @import("Vector.zig");
    _ = @import("Dimensions.zig");
    _ = @import("Scales.zig");
    _ = @import("Base.zig");
Author	SHA1	Message	Date
adrien	1dcfd58189	. All checks were successful Deploy MkDocs to Garage / build-and-deploy (push) Successful in 29s Details	2026-04-26 01:37:00 +02:00
adrien	0914ea0a60	. Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 1m1s Details	2026-04-26 01:35:37 +02:00
adrien	37a95607b3	. Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 28s Details	2026-04-26 01:33:37 +02:00
adrien	fe7ee54601	Moved mkdocs.yml to /docs Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 34s Details	2026-04-26 01:31:45 +02:00
Adrien Bouvais	81effc9815	Merge pull request 'Replace Scalar and Vector to a single Quantity that use @Vector' (#1 ) from simd into main Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 33s Details Reviewed-on: #1	2026-04-25 23:29:30 +00:00
adrien	4a2d45b384	Fix benchmarks to work with new Scalar and Vector	2026-04-26 01:28:33 +02:00
adrien	d32de3fe82	Converted Base test to new Scalar	2026-04-26 01:18:41 +02:00
adrien	58fd4d5797	Fix Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 29s Details	2026-04-26 01:11:51 +02:00
adrien	ae6b069da1	Added simd ref to action Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 27s Details	2026-04-26 01:09:20 +02:00
adrien	4b01dfe412	Replaced Vector with Quantity Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 25s Details	2026-04-26 01:07:12 +02:00
adrien	c350ffd1d6	Working vector initiate Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 30s Details	2026-04-26 00:40:10 +02:00
adrien	a591736b19	Totally replaced Scalar with Quantity Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 49s Details	2026-04-26 00:29:00 +02:00
adrien	89e46f4cd4	. Some checks failed Deploy MkDocs to Garage / build-and-deploy (push) Failing after 2m17s Details	2026-04-25 23:29:51 +02:00
adrien	db6aaf433d	Added mkdocs	2026-04-25 23:29:06 +02:00
adrien	0257ee5d21	Added Quantity that will be both Scalar and Vector, using only @Vector I did some benchmark, and @Vector(1, type) is just as fast as type for float and around 40% slower for int. But the traide off is ok for me, because for @Vector(>1, type), we are between 2 and 32x faster! And I dont think single value int will be use for high performance computing, so I am ok with how simple it make everything. Because now I dont have to one struct that use @Vector and one that use just type, I can just use one. Making it even easier to integrate GPU later. I will even be able to have a single place in my code with a + - * and / basically. A single function for all, so I only need to optimize that one.	2026-04-25 22:36:48 +02:00
adrien	7fc7193206	FLush	2026-04-25 18:57:38 +02:00
adrien	3a4783cfa1	Benchmark SIMD vs Native	2026-04-25 18:47:13 +02:00
adrien	80cdcd134e	Added some function to benchmark	2026-04-24 23:50:16 +02:00
adrien	c2675f5117	Added imperial to README	2026-04-23 00:28:49 +02:00
adrien	f26f6086ca	Added Imperial unit scales	2026-04-23 00:14:57 +02:00
adrien	a91a509368	Added GNU License	2026-04-23 00:00:32 +02:00
adrien	5e7b7c5302	Added some constants	2026-04-22 23:53:43 +02:00
adrien	719679aabc	Updated README + Renamed mulBy and divBy to mul div	2026-04-22 23:33:58 +02:00
adrien	2c94df7f4a	Added overflaw security + made benchmark work (set to max)	2026-04-22 23:11:42 +02:00
adrien	5efa42c2e1	Made possible to use comptime float, int and T for Scalar operation of Vector	2026-04-22 22:34:46 +02:00
adrien	1129acc542	Same for Scalar	2026-04-22 22:10:57 +02:00
adrien	9544bb584a	Removed s and d in Vector (duplicate of dims and scales)	2026-04-22 22:10:04 +02:00
adrien	6c50a01d6e	Removed ugly Scalar_	2026-04-22 22:08:05 +02:00
adrien	e4d55e36ab	Added the posibility to use comptime_float, int and T for Scalar operation	2026-04-22 16:45:02 +02:00
adrien	82bdb96746	Changed how Scalar is generated to use Dimensions.ArgOpts and Scales.ArgOpts	2026-04-22 16:31:07 +02:00
adrien	a2d46e3f55	Added sqrt to Scalar and Vector	2026-04-22 15:43:17 +02:00
adrien	0dd9e02f59	Added abs, pow and product operations	2026-04-22 14:50:21 +02:00
adrien	c4e462add3	Added dot and cross function for Vector	2026-04-22 12:32:10 +02:00
adrien	4c910319d5	Added comparison operation to Scalar and Vector	2026-04-22 12:26:17 +02:00
adrien	86841318f2	Added some doc comments	2026-04-22 10:58:14 +02:00
adrien	ec05b60fc3	Replaced Scales.min to helper.finerScales	2026-04-22 10:31:04 +02:00
		`@ -0,0 +1,3 @@`
							`## GPU support with WebGPU`

							`Example: https://github.com/seyhajin/webgpu-wasm-zig`