# ruapu ![GitHub License](https://img.shields.io/github/license/nihui/ruapu?style=for-the-badge) ![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/nihui/ruapu/ci.yml?style=for-the-badge) Detect CPU ISA features with single-file
CPU✅ x86, x86-64
✅ arm, aarch64
✅ mips
✅ powerpc
✅ s390x
✅ risc-v
✅ loongarch		 ```c #define RUAPU_IMPLEMENTATION #include "ruapu.h" int main() { // initialize ruapu once ruapu_init(); // now, tell me if this cpu has avx2 int has_avx2 = ruapu_supports("avx2"); return 0; } ```
OS✅ Windows
✅ Linux
✅ macOS
✅ Android
✅ iOS
Compiler✅ GCC
✅ Clang
✅ MSVC
✅ MinGW
## Let's ruapu
Compile ruapu test program ```shell # GCC / MinGW gcc main.c -o ruapu ``` ```shell # Clang clang main.c -o ruapu ``` ```shell # MSVC cl.exe /Fe: ruapu.exe main.c ``` Run ruapu in command line ```shell ./ruapu mmx = 1 sse = 1 sse2 = 1 sse3 = 1 ssse3 = 1 sse41 = 1 sse42 = 1 sse4a = 1 xop = 0 ... more lines omitted ... ```
Github-hosted runner result (Linux) ``` mmx = 1 sse = 1 sse2 = 1 sse3 = 1 ssse3 = 1 sse41 = 1 sse42 = 1 sse4a = 1 xop = 0 avx = 1 f16c = 1 fma = 1 avx2 = 1 avx512f = 0 avx512bw = 0 avx512cd = 0 avx512dq = 0 avx512vl = 0 avx512vnni = 0 avx512bf16 = 0 avx512ifma = 0 avx512vbmi = 0 avx512vbmi2 = 0 avx512fp16 = 0 avxvnni = 0 avxvnniint8 = 0 avxifma = 0 ```
Github-hosted runner result (macOS) ``` mmx = 1 sse = 1 sse2 = 1 sse3 = 1 ssse3 = 1 sse41 = 1 sse42 = 1 sse4a = 0 xop = 0 avx = 1 f16c = 1 fma = 1 avx2 = 1 avx512f = 0 avx512bw = 0 avx512cd = 0 avx512dq = 0 avx512vl = 0 avx512vnni = 0 avx512bf16 = 0 avx512ifma = 0 avx512vbmi = 0 avx512vbmi2 = 0 avx512fp16 = 0 avxvnni = 0 avxvnniint8 = 0 avxifma = 0 ```
Github-hosted runner result (macOS M1) ``` neon = 1 vfpv4 = 1 cpuid = 0 asimdhp = 1 asimddp = 1 asimdfhm = 1 bf16 = 0 i8mm = 0 sve = 0 sve2 = 0 svebf16 = 0 svei8mm = 0 svef32mm = 0 ```
Github-hosted runner result (Windows) ``` mmx = 1 sse = 1 sse2 = 1 sse3 = 1 ssse3 = 1 sse41 = 1 sse42 = 1 sse4a = 1 xop = 0 avx = 1 f16c = 1 fma = 1 avx2 = 1 avx512f = 0 avx512bw = 0 avx512cd = 0 avx512dq = 0 avx512vl = 0 avx512vnni = 0 avx512bf16 = 0 avx512ifma = 0 avx512vbmi = 0 avx512vbmi2 = 0 avx512fp16 = 0 avxvnni = 0 avxvnniint8 = 0 avxifma = 0 ```
## Features * Detect **CPU ISA with single-file**    _`sse2`, `avx`, `avx512f`, `neon`, etc._ * Detect **vendor extended ISA**     _apple `amx`, risc-v vendor ISA, etc._ * Detect **richer ISA on Windows ARM**   _`IsProcessorFeaturePresent()` returns little ISA information_ * Detect **`x86-avx512` on macOS correctly**  _macOS hides it in `cpuid`_ * Detect **new CPU's ISA on old systems**  _they are usually not exposed in `auxv` or `MISA`_ * Detect **CPU hidden ISA**        _`fma4` on zen1, ISA in hypervisor, etc._ ## Supported ISA _ (more is comming ... :)_ |CPU|ISA| |:---:|---| |x86|`mmx` `sse` `sse2` `sse3` `ssse3` `sse41` `sse42` `sse4a` `xop` `avx` `f16c` `fma` `fma4` `avx2` `avx512f` `avx512bw` `avx512cd` `avx512dq` `avx512vl` `avx512vnni` `avx512bf16` `avx512ifma` `avx512vbmi` `avx512vbmi2` `avx512fp16` `avxvnni` `avxvnniint8` `avxifma`| |arm|`edsp` `neon` `vfpv4`| |aarch64|`neon` `vfpv4` `cpuid` `asimdhp` `asimddp` `asimdfhm` `bf16` `i8mm` `sve` `sve2` `svebf16` `svei8mm` `svef32mm` `sha3` `sha512` `sm3` `sm4` `amx`| |mips|`msa`| |powerpc|`vsx`| |s390x|`zvector`| |loongarch|`lsx` `lasx`| |risc-v|`i` `m` `a` `f` `d` `c` `zfa` `zfh` `zfhmin` `zicsr` `zifencei` | ## Techniques inside ruapu ruapu is implemented in C language to ensure the widest possible portability. ruapu determines whether the CPU supports certain instruction sets by trying to execute instructions and detecting whether an `Illegal Instruction` exception occurs. ruapu does not rely on the cpuid instructions and registers related to the CPU architecture, nor does it rely on the `MISA` information and system calls of the operating system. This can help us get more detailed CPU ISA information. ## Repos that use ruapu * [ncnn](https://github.com/Tencent/ncnn)  _High-performance neural network inference framework_ * [libllm](https://github.com/ling0322/libllm)  _Efficient inference of large language models_ ## Credits * [@nihui](https://github.com/nihui)  _Write the initial POC code and ruapu maintainer_ * [@kernelbin](https://github.com/kernelbin)  _Implement exception handling for Windows_ * [@zchrissirhcz](https://github.com/zchrissirhcz)  _Detect x86 FMA4_ ## License MIT License