Algebrix

Math for game engines: vectors, matrices, quaternions, and geometry. Uses SIMD on x86_64 and aarch64 when the simd feature is on; otherwise scalar. Originally split out from a larger codebase and kept as a separate crate.

What's in it

• Vectors: Vec2, Vec3, Vec4 (float); IVec2/3/4, UVec2/3/4, BVec2/3/4; DVec3 for double. Swizzles supported. Float vectors also have normalize_fast() and length_fast() (rsqrt-based) when you care more about speed than precision.
• Matrices: Mat2, Mat3, Mat4, and DMat4 for double 4x4.
• Quaternions: Quat and DQuat for rotations.
• Transforms: Affine2 and Affine3 for combined rotation, scale, and translation.
• Geometry: Plane, Ray, Aabb2, Aabb3, Frustum for culling and raycasting.
• Angles: Rad, Deg, and EulerRot for type-safe radians/degrees.

Usage

use algebrix::{Vec3, Mat4, Quat, Rad, Deg};

let v = Vec3::new(1.0, 2.0, 3.0);
let normalized = v.normalize();
let angle = Rad::from(Deg::new(90.0));

Feature flags

• std – standard library (default).
• simd – SIMD on; backend chosen from target (default).
• simd-x86 – force x86_64 (SSE/AVX).
• simd-arm – force ARM (NEON).
• scalar-math – no SIMD.
• glam-compatibility – From/Into between algebrix and glam for Vec2/Vec3/Vec4, Mat2/Mat3/Mat4, Quat.
• nalgebra-compatibility – From/Into between algebrix and nalgebra for Vector2/3/4, Matrix2/3/4, Quaternion.

Default features: ["std", "simd"]. Use default-features = false and opt in to what you need if you want a smaller dependency set or a specific SIMD backend.