check formatting

.github/workflows/ci.yml

@@ -479,3 +479,30 @@ jobs:
           flags: bdist_${{ matrix.name }}
           name: codecov_bdist_${{ matrix.name }}
           token: ${{ secrets.CODECOV_TOKEN }}
+
+  format_clang:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v4
+      - name: Check C++ code formatting with clang-format
+        continue-on-error: true
+        run: |
+          echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main" | sudo tee /etc/apt/sources.list.d/llvm-toolchain-jammy-16.list
+          wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo gpg --dearmor -o /usr/share/keyrings/llvm-archive-keyring.gpg
+          sudo apt --yes update
+          sudo apt --yes install clang-format-16
+          find shared/libebm \( -iname "*.cpp" -o -iname "*.h" -o -iname "*.hpp" \) | xargs clang-format-16 -i -style=file
+          git diff --exit-code
+
+  format_black:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v4
+      - name: Check python matches black format
+        continue-on-error: true
+        run: |
+          cd python/interpret-core
+          python -m pip install --upgrade black
+          black --check .