#ifndef DOXYGEN
-#if GMX_GPU == GMX_GPU_OPENCL
+# if GMX_GPU == GMX_GPU_OPENCL
struct gmx_nbnxn_ocl_t;
using gmx_nbnxn_gpu_t = gmx_nbnxn_ocl_t;
-#endif
+# endif
-#if GMX_GPU == GMX_GPU_CUDA
+# if GMX_GPU == GMX_GPU_CUDA
struct gmx_nbnxn_cuda_t;
using gmx_nbnxn_gpu_t = gmx_nbnxn_cuda_t;
-#endif
+# endif
-#if GMX_GPU == GMX_GPU_NONE
+# if GMX_GPU == GMX_GPU_NONE
using gmx_nbnxn_gpu_t = int;
-#endif
+# endif
#endif // !DOXYGEN