xsimd ☆

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Description:
Modern, portable C++ wrappers for SIMD intrinsics

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c++ simd vectorization performance header-only cross-platform

Install: brew install xsimd

About:
Xsimd provides a unified, modern C++ abstraction layer over SIMD (Single Instruction, Multiple Data) intrinsics for major architectures like SSE, AVX, and ARM NEON. It enables developers to write portable high-performance code that automatically leverages hardware vectorization capabilities. The library is header-only and designed for seamless integration into performance-critical applications.

Key Features:

Header-only C++11 library requiring no build step
Unified API for SSE, AVX, AVX512, and ARM NEON
Compile-time dispatch for optimal performance
Expression templates for efficient operation chaining

Use Cases:

High-performance numerical computing and scientific simulations
Game engine development for physics and graphics processing
Machine learning inference acceleration on edge devices

Alternatives:

Eigen – Eigen is a full linear algebra library with SIMD support, while xsimd is focused purely on SIMD abstraction
Vc – Vc provides similar SIMD abstractions but xsimd offers more modern C++11/14 features and better portability

Version History

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