Time.Timeval
val t : [ `Timeval64 ] Ctypes.structure Luv_c_generated_types.typ
val sec : (int64, [ `Timeval64 ] Ctypes.structure) Luv_c_generated_types.field
val usec : (int32, [ `Timeval64 ] Ctypes.structure) Luv_c_generated_types.field