extern "C" a_sql_uint32 (exttb_use_new_api )();

The function returns an unsigned 32-bit integer. The returned value must be the interface version number, EXTTB_V1_API defined in exttbapiv1.h.

A typical implementation of this function is as follows:

extern "C" a_sql_uint32 ( exttb_use_new_api )( void )
{
   return EXTTB_V1_API;
}