Function jit_insn_call_native 

pub unsafe extern "C" fn jit_insn_call_native(
    func: jit_function_t,
    name: *const c_char,
    native_func: *mut c_void,
    signature: jit_type_t,
    args: *mut jit_value_t,
    num_args: c_uint,
    flags: c_int,
) -> jit_value_t

Output an instruction that calls an external native function. The name is for diagnostic purposes only, and can be NULL.