defs.h

Go to the documentation of this file.

#pragma once
 
#include <limits>
 
// FMM_MPI is controlled by CMake (passed as -DFMM_MPI via target_compile_definitions)
// Uncomment below to force-enable MPI regardless of CMake:
//#define FMM_MPI
#define FMM_CONSTEXPR_MATH // fast CUDA solver, but limits max multipole num (min error 10^-7)
 
#ifdef FMM_CONSTEXPR_MATH
#define FMM_CONSTEXPR constexpr
#else
#define FMM_CONSTEXPR
#endif
 
#ifdef __NVCC__
#define __HOST__ __host__
#define __DEVICE__ __device__
#else
#define __HOST__
#define __DEVICE__
#endif
 
namespace fmm {
 
    const int FMM_AUTO = std::numeric_limits<int>::max();
 
    constexpr double FORCE_EPS = 0.01;
    constexpr double FORCE_EPS2 = FORCE_EPS * FORCE_EPS;
    constexpr double FORCE_EPS3 = FORCE_EPS2 * FORCE_EPS;
    constexpr double FORCE_EPS4 = FORCE_EPS2 * FORCE_EPS2;
    constexpr double FORCE_EPS5 = FORCE_EPS3 * FORCE_EPS2;
    constexpr double FORCE_EPS6 = FORCE_EPS3 * FORCE_EPS3;
 
    //__DEVICE__ constexpr double CUDA_FORCE_EPS = FORCE_EPS;
    //__DEVICE__ constexpr double CUDA_FORCE_EPS2 = CUDA_FORCE_EPS * CUDA_FORCE_EPS;
    //__DEVICE__ constexpr double CUDA_FORCE_EPS3 = CUDA_FORCE_EPS2 * CUDA_FORCE_EPS;
    //__DEVICE__ constexpr double CUDA_FORCE_EPS5 = CUDA_FORCE_EPS3 * CUDA_FORCE_EPS2;
 
namespace detail {
 
    const int _3d_MAX_MULTIPOLE_NUM = 18; // set max 18 if constexpr math
    const int _2d_MAX_MULTIPOLE_NUM = 9; // set max 30 if constexpr math
    
 
 
} // detail
 
} // fmm