Useful C/C++ macros

macros.cpp

#ifdef _DEBUG
  #ifdef _WIN32
    #define dprintf(format,...)  fprintf(stdout, "%s:%d:%s " format , __FILE__, __LINE__, __FUNCTION__, __VA_ARGS__)
  #else
    //gcc:
    #define dprintf(format, args...) fprintf(stdout, "%s:%d:%s " format, __FILE__, __LINE__, __FUNCTION__, ## args)
  #endif
#else
  #define dprintf(format, args...) 
#endif


#if defined(BUILD_DLL) 
    #if defined WIN32 
        #define XYZ_API __declspec(dllexport) 
    #else //GCC
        #define XYZ_API __attribute__ ((visibility ("default"))) 
    #endif 
#else 
    #if defined _WIN32 
        #define XYZ_API __declspec(dllimport) 
    #else //GCC
        #define XYZ_API 
    #endif 
#endif