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fast-bytecount's Introduction

fast-bytecount

This is a port of the AVX2 and SSE2 bytecount functions from the Rust bytecount crate to C, including runtime CPU feature detection.

It isn't yet set up as a library, just a trivial benchmark against the naive implementation.

Usage

$ aclocal
$ autoconf
$ automake --add-missing
$ ./configure
$ make
$ ./bench

Supported configure flags:

  • --disable-runtime-dispatch, enables only the scalar fallback bytecounts
  • --disable-runtime-avx2, disable AVX2 version
  • --disable-runtime-sse2, disable SSE2 version

fast-bytecount's People

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