text: #ifndef CUDAFUNCTIONS_HH
  #define CUDAFUNCTIONS_HH
  
  #include "DeclareMacro.hh"
  #include "cudaUtils.hh"
  
  #if defined(HAVE_CUDA)
  void warmup_kernel();
  int ThreadBlockLayout(dim3 &grid, dim3 &block, int num_particles);
  DEVICE
  int getGlobalThreadID();
  #endif
  
  #endif
  