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simd-everywhere /simde

Star2.9k

Implementations of SIMD instruction sets for systems which don't natively support them.

arm neon avx sse simd avx2 sse2 vectorization arm64 sse41 fma avx512 powerpc altivec ssse3 sse42 sse3 mmx simd-intrinsics gfni

UpdatedNov 24, 2025
C

fastfloat /fast_float

Star1.9k

Fast and exact implementation of the C++ from_chars functions for number types: 4x to 10x faster than strtod, part of GCC 12, MySQL, Chromium, Redis and WebKit/Safari

macos linux freebsd visual-studio high-performance neon cpp11 simd cpp17 sse2 cpp-library

UpdatedDec 17, 2025
C++

bitshifter /glam-rs

Star1.9k

A simple and fast linear algebra library for games and graphics

rust simd sse2 3d-math-libraries

UpdatedOct 28, 2025
Rust

ada-url /ada

Star1.7k

WHATWG-compliant and fast URL parser written in modern C++, part of Internet Archive, Node.js, Clickhouse, Redpanda, Kong, Telegram, Adguard, Datadog and Cloudflare Workers.

url parser performance cpp neon simd sse2 whatwg-url

UpdatedDec 11, 2025
C++

Unicode routines (UTF8, UTF16, UTF32) and Base64: billions of characters per second using SSE2, AVX2, NEON, AVX-512, RISC-V Vector Extension, LoongArch64, POWER. Part of Node.js, WebKit/Safari, Ladybird, Chromium, Cloudflare Workers and Bun.

unicode base64 transcoding neon simd avx2 sse2 utf8 risc-v utf16 ppc64le avx-512

UpdatedDec 18, 2025
C++

jfalcou /eve

Star1.3k

Expressive Vector Engine - SIMD in C++ Goes Brrrr

cpp hpc neon avx simd avx2 sse2 simd-programming cpp-library aarch64 avx512 simd-parallelism altivec ssse3 simd-library arm-sve arm-sve2

UpdatedDec 16, 2025
C++

powturbo /TurboPFor-Integer-Compression

Star819

Fastest Integer Compression

encoding library compression time-series simd compressor integer-compression intersection inverted-index avx2 sse2 floating-point

UpdatedMar 1, 2024
C

shibatch /sleef

Sponsor

Star793

SIMD Library for Evaluating Elementary Functions, vectorized libm and DFT

cuda simd elementary-functions avx2 sse2 fft vectorization math-library aarch64 avx512 powerpc vsx vector-math fourier-transform s390x quadruple-precision fourier-transform-library

UpdatedDec 10, 2025
C

p-ranav /fccf

Star380

fccf: A command-line tool that quickly searches through C/C++ source code in a directory based on a search string and prints relevant code snippets that match the query.

search fast libclang cpp find clang cpp11 simd needle cpp17 sse2 command-line-tool c-language abstract-syntax-tree c-programming code-search-engine

UpdatedOct 23, 2024
C++

agenium-scale /nsimd

Star337

Agenium Scale vectorization library for CPUs and GPUs

hpc neon cuda avx simd avx2 sse2 simd-programming aarch64 avx512 simd-instructions simd-library sse42 rocm cpp20 sve neon128 cpp20-library vectorization-library

UpdatedOct 21, 2021
C

powturbo /Turbo-Run-Length-Encoding

Star289

TurboRLE-Fastest Run Length Encoding

c java c-plus-plus benchmark rle sse simd avx2 run-length-encoding sse2

UpdatedApr 7, 2023
C

agenium-scale /boost.simd

Star231

Boost SIMD

portable neon parallel-computing avx sse cpp11 simd avx2 sse2 simd-programming vectorization sse41 fma aarch64 avx512 sse42 sse3 avx512f neon128 neon64

UpdatedApr 10, 2019

swojtasiak /fcml-lib

Star92

A general purpose machine code manipulation library for x86-32 (IA-32) and x86-64 (AMD64) architectures (Assembler, Disassembler, Library).

code-generator x86-64 assembler disassembler intel avx sse x86 avx2 sse2 amd64 sse41 ssse3 sse42 sse3 xop x86-32 shared-library avx-512

UpdatedJan 26, 2024
C

VectorChief /UniSIMD-assembler

Star90

SIMD macro assembler unified for ARM, MIPS, PPC and x86

mips neon x86-64 assembler avx sse simd x86 armv7 avx2 sse2 aarch64 avx512 powerpc altivec vsx msa vmx spmd sve

UpdatedNov 20, 2024
C

Fig1024 /OP_RBF

Star79

Optimized Recursive Bilateral Filter

computer-vision image-processing multithreading avx2 sse2 bilateral-filter simd-intrinsics

UpdatedAug 30, 2023
C

powturbo /Turbo-Histogram

Star73

Fastest Histogram Construction

c c-plus-plus benchmark histogram sse simd avx2 sse2

UpdatedDec 29, 2021
C

unevens /hiir

Star41

A header only ready to include mirror of the HIIR library by Laurent De Soras, an oversampling and Hilbert transform library in C++, with additional support for double precision on ARM AArch64 using Neon.

audio neon avx sse simd sse2 resampling audio-processing