| SQLITE3_API_ROUTINES(3) | Library Functions Manual | SQLITE3_API_ROUTINES(3) | 
sqlite3_api_routines —
Loadable Extension Thunk
typedef struct sqlite3_api_routines sqlite3_api_routines;
A pointer to the opaque sqlite3_api_routines structure is passed as the third
  parameter to entry points of loadable extensions. This structure must be
  typedefed in order to work around compiler warnings on some platforms.