mrubyedge · udzura · Feb 10, 2026 · Feb 10, 2026 · Feb 10, 2026 · Feb 10, 2026
diff --git a/.github/workflows/mruby-math.yml b/.github/workflows/mruby-math.yml
@@ -0,0 +1,43 @@
+name: mruby-math CI
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'mruby-math/**'
+  pull_request:
+    branches:
+      - master
+    paths:
+      - 'mruby-math/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        BUILD_TARGET: [release]
+    steps:
+      - uses: actions/checkout@v5
+      - name: Cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-math-${{ hashFiles('**/Cargo.lock') }}
+      # - name: Install C compiler
+      #   run: sudo apt-get update && sudo apt-get install -y build-essential
+      - name: Run formatter
+        run: |
+          cargo fmt -p mruby-math --check
+      - name: Run tests for "${{ matrix.BUILD_TARGET }}" profile
+        run: |
+          cargo test -p mruby-math \
+            --profile ${{ matrix.BUILD_TARGET }}
+      - name: Build binaries for "${{ matrix.BUILD_TARGET }}" profile
+        run: |
+          cargo build -p mruby-math \
+            --profile ${{ matrix.BUILD_TARGET }}
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/Cargo.toml b/Cargo.toml
@@ -1,4 +1,4 @@
 [workspace]
 resolver = "2"
 
-members = ["mruby-serde-json", "mrubyedge", "mrubyedge-cli"]
+members = ["mruby-math", "mruby-serde-json", "mrubyedge", "mrubyedge-cli"]
diff --git a/mruby-math/Cargo.toml b/mruby-math/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "mruby-math"
+version = "0.1.0"
+edition = "2024"
+authors = ["Uchio Kondo <[email protected]>"]
+description = "mruby-math provides Math module for mruby/edge"
+license = "BSD-3-Clause"
+
+[dependencies]
+mrubyedge = { version = ">= 1.1.3" }
+
+[dev-dependencies]
+mrubyedge = { version = ">= 1.1.3", features = ["default"] }
+mec-mrbc-sys = "3.3.1"
diff --git a/mruby-math/README.md b/mruby-math/README.md
@@ -0,0 +1,89 @@
+# mruby-math
+
+A Rust implementation of the Math module for mruby/edge.
+
+## Features
+
+This crate provides mathematical functions and constants for mruby/edge:
+
+### Constants
+
+- `Math::PI` - π (pi)
+- `Math::E` - e (Euler's number)
+
+### Trigonometric Functions
+
+- `Math.sin(x)` - Sine
+- `Math.cos(x)` - Cosine
+- `Math.tan(x)` - Tangent
+- `Math.asin(x)` - Arcsine
+- `Math.acos(x)` - Arccosine
+- `Math.atan(x)` - Arctangent
+- `Math.atan2(y, x)` - Arctangent of y/x
+
+### Hyperbolic Functions
+
+- `Math.sinh(x)` - Hyperbolic sine
+- `Math.cosh(x)` - Hyperbolic cosine
+- `Math.tanh(x)` - Hyperbolic tangent
+- `Math.asinh(x)` - Inverse hyperbolic sine
+- `Math.acosh(x)` - Inverse hyperbolic cosine
+- `Math.atanh(x)` - Inverse hyperbolic tangent
+
+### Exponential and Logarithmic Functions
+
+- `Math.exp(x)` - e^x
+- `Math.log(x)` - Natural logarithm (ln)
+- `Math.log(x, base)` - Logarithm with custom base
+- `Math.log10(x)` - Base-10 logarithm
+- `Math.log2(x)` - Base-2 logarithm
+
+### Root Functions
+
+- `Math.sqrt(x)` - Square root
+- `Math.cbrt(x)` - Cube root
+
+### Other Functions
+
+- `Math.hypot(x, y)` - Hypotenuse (√(x² + y²))
+- `Math.ldexp(fraction, exponent)` - fraction × 2^exponent
+- `Math.erf(x)` - Error function
+- `Math.erfc(x)` - Complementary error function
+
+## Usage
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+mruby-math = "0.1.0"
+mrubyedge = "1.1.1"
+```
+
+Initialize the Math module in your VM:
+
+```rust
+use mruby_math::init_math;
+use mrubyedge::yamrb::vm::VM;
+
+let mut vm = VM::open(&mut rite);
+init_math(&mut vm);
+```
+
+## Example
+
+```ruby
+# Calculate sine wave
+x = Math::PI / 4
+y = Math.sin(x)
+
+# Calculate distance
+distance = Math.hypot(3, 4)  # => 5.0
+
+# Exponential growth
+result = Math.exp(2)  # => e^2
+```
+
+## License
+
+BSD-3-Clause