recp/cglm

Health v2 · maintenance only

Adoption not part of the score

3004 stars · 290 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

cglm is a highly optimized 2D/3D graphics math library for C, providing vector, matrix, quaternion, and affine transform operations similar to GLM. It is allocation-free, header-only, and SIMD-optimized (SSE, AVX, NEON) for fast graphics programming.

Use cases

• do matrix and vector math for OpenGL rendering in C
• compute perspective and view matrices for a 3D camera
• implement quaternion rotations for a game engine
• do frustum culling and bounding box checks
• perform SIMD-optimized 3D math on ARM or x86
• use a header-only math library in a C graphics project
• calculate bezier curves and affine transforms

When to choose

• writing C or C-with-graphics code that needs fast vector/matrix math
• you want a header-only, allocation-free math library
• you need SIMD optimizations across SSE, AVX, and NEON
• building game engines, renderers, or OpenGL/Vulkan applications in C

When to avoid

• you are using C++ and prefer the full-featured GLM library
• you need a general-purpose linear algebra library with arbitrary-size matrices
• your project is in a language other than C

Facets

library · maturity stable

math graphics simulation graphics cross-platform cross-platform c wasm header-only simd opengl-math vec3 mat4 quaternion 3d-math sse avx neon game-development algorithms gpu

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