Intel® C++ Compiler 16.0 User and Reference Guide
Intel® Cilk™ Plus programs require the runtime system and libraries, which are automatically linked into any program that uses Intel® Cilk™ Plus. The runtime system provides a small number of user-accessible functions for controlling details of the program's behavior.
Include cilk/cilk_api.h to declare the Intel® Cilk™ Plus runtime functions and classes. The entry points defined in this header file are described below. This header file does not define the interface to reducers. For more information on reducers, see Reducers.