diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..fce6520
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,87 @@
+name: QuadBLAS Testing
+
+on:
+  push:
+    branches: [ ci ]
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test-ubuntu:
+    name: Test Ubuntu
+    runs-on: ubuntu-latest
+    
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Install dependencies
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y cmake build-essential libomp-dev
+    
+    - name: Build SLEEF
+      run: |
+        git clone --branch 3.8 --depth 1 https://github.com/shibatch/sleef.git
+        cd sleef
+        cmake -S . -B build -DSLEEF_BUILD_QUAD=ON -DSLEEF_BUILD_SHARED_LIBS=ON
+        cmake --build build --parallel $(nproc)
+        sudo cmake --install build --prefix /usr/local
+    
+    - name: Build QuadBLAS
+      env:
+        SLEEF_ROOT: /usr/local
+      run: |
+        mkdir build && cd build
+        cmake ..
+        make -j$(nproc)
+    
+    - name: Run tests
+      run: |
+        cd build
+        ./quadblas_test
+
+  test-macos:
+    name: Test macOS ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-13, macos-14]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Install dependencies
+      run: |
+        brew install cmake libomp
+
+    - name: Install SLEEF
+      env:
+        MACOSX_DEPLOYMENT_TARGET: "11.0"
+      run: |
+        git clone --branch 3.8 --depth 1 https://github.com/shibatch/sleef.git
+        cd sleef
+        cmake -S . -B build \
+          -DSLEEF_BUILD_QUAD=ON \
+          -DSLEEF_BUILD_SHARED_LIBS=ON \
+          -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+          -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 \
+          -DCMAKE_INSTALL_RPATH="@loader_path/../lib" \
+          -DCMAKE_BUILD_WITH_INSTALL_RPATH=ON
+        cmake --build build --clean-first -j
+        sudo cmake --install build --prefix /usr/local
+
+    - name: Build QuadBLAS
+      env:
+        SLEEF_ROOT: /usr/local
+        DYLD_LIBRARY_PATH: "/usr/local/lib:$DYLD_LIBRARY_PATH"
+      run: |
+        mkdir build && cd build
+        cmake ..
+        make -j$(sysctl -n hw.ncpu)
+
+    - name: Run tests
+      env:
+        DYLD_LIBRARY_PATH: "/usr/local/lib:$DYLD_LIBRARY_PATH"
+      run: |
+        cd build
+        ./quadblas_test
\ No newline at end of file
diff --git a/include/quadblas/core/platform.hpp b/include/quadblas/core/platform.hpp
index d12ab00..5ba2409 100644
--- a/include/quadblas/core/platform.hpp
+++ b/include/quadblas/core/platform.hpp
@@ -18,4 +18,9 @@
 // SLEEF includes
 #include <sleefquad.h>
 
+// Compatibility for SLEEF_QUAD_C macro
+#ifndef SLEEF_QUAD_C
+    #define SLEEF_QUAD_C(x) Sleef_cast_from_doubleq1(x)
+#endif
+
 #endif // QUADBLAS_CORE_PLATFORM_HPP
\ No newline at end of file