feat: Set up based on sse2neon

.clang-format

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+BasedOnStyle: Chromium
+Language: Cpp
+MaxEmptyLinesToKeep: 3
+IndentCaseLabels: false
+AllowShortIfStatementsOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+DerivePointerAlignment: false
+PointerAlignment: Right
+SpaceAfterCStyleCast: true
+TabWidth: 4
+UseTab: Never
+IndentWidth: 4
+BreakBeforeBraces: Linux
+AccessModifierOffset: -4
+ForEachMacros:
+  - SET_FOREACH
+  - RB_FOREACH
+AlignEscapedNewlines: Left

.gitattributes

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+*.md text=auto
+LICENSE text=auto
+
+sse2rvv.h -text linguist-language=c

.github/workflows/github_actions.yml

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+name: Github Actions
+
+on: [push, pull_request]
+
+jobs:
+  host_x86:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        arch: [x86_64]
+        cxx_compiler: [g++-10, clang++-11]
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3.2.0
+      - name: build artifact
+        env:
+          CXX: ${{ matrix.cxx_compiler }}
+        run: |
+          sh scripts/cross-tool.sh
+          make check
+          sh scripts/cross-check.sh
+
+  host_win:
+    runs-on: windows-2022
+    strategy:
+      matrix:
+        arch:
+          - x86_64
+          - armv7
+          - aarch64
+    env:
+      LLVM_MINGW_URL: https://github.com/mstorsjo/llvm-mingw/releases/download/20220906/llvm-mingw-20220906-ucrt-x86_64.zip
+    defaults:
+      run:
+        shell: bash
+    steps:
+      - name: unpack llvm-mingw
+        run: |
+          curl -L -O $LLVM_MINGW_URL
+          unzip -q llvm-mingw-*.zip
+          rm llvm-mingw-*.zip
+          mv llvm-mingw-* "$HOME/llvm-mingw"
+          echo "$HOME/llvm-mingw/bin" >> $GITHUB_PATH
+      - name: checkout code
+        uses: actions/checkout@v3.2.0
+      - name: build artifact
+        env:
+          CXX: ${{ matrix.arch }}-w64-mingw32-clang++
+        run: mingw32-make processor=${{ matrix.arch }}
+      - name: run tests
+        if: matrix.arch == 'x86_64'
+        run: mingw32-make check
+
+  host_arm:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        arch_with_features: [{arch: armv7, feature: none}, {arch: aarch64, feature: none}, {arch: aarch64, feature: crypto+crc}]
+        cxx_compiler: [g++-10, clang++-11]
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3.2.0
+      - name: build artifact
+        # The Github Action for non-x86 CPU
+        # https://github.com/uraimo/run-on-arch-action
+        uses: uraimo/run-on-arch-action@v2.5.0
+        with:
+          arch: ${{ matrix.arch_with_features.arch }}
+          distro: ubuntu20.04
+          env: |
+            CXX: ${{ matrix.cxx_compiler }}
+          install: |
+            apt-get update -q -y
+            apt-get install -q -y "${{ matrix.cxx_compiler }}" make
+            apt-get install -q -y gcc
+          run: |
+            make FEATURE=${{ matrix.arch_with_features.feature }} check
+
+  host_win_msvc:
+    runs-on: windows-2022
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3.0.2
+
+      - name: add msbuild to PATH
+        uses: microsoft/setup-msbuild@v1.1
+
+      - name: build artifact
+        run: msbuild sse2rvv.vcxproj -t:rebuild -property:Configuration=Release -property:Platform=ARM64
+
+      - name: upload artifact
+        uses: actions/upload-artifact@master
+        with:
+          name: msvc-arm64-artifact
+          path: ARM64
+
+  test_win_msvc:
+    runs-on: ubuntu-latest
+    container: linaro/wine-arm64
+    needs: host_win_msvc
+    steps:
+      - name: download artifact
+        uses: actions/download-artifact@master
+        with:
+          name: msvc-arm64-artifact
+
+      - name: Run tests
+        run: wine-arm64 cmd.exe /c 'Release\sse2rvv.exe'
+
+
+  coding_style:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3.2.0
+      - name: style check
+        run: |
+            sudo apt-get install -q -y clang-format-12
+            sh scripts/check-format.sh
+        shell: bash

.gitignore

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+*.exe
+*.o
+*.gch
+tests/*.d
+tests/main
+gcc-arm-*
+.vs/
+Debug/
+Release/
+*.vcxproj.user