Function clfft::ffi::clfftSetPlanCallback

pub unsafe extern fn clfftSetPlanCallback(plHandle: clfftPlanHandle,
                                          funcName: *const c_char,
                                          funcString: *const c_char,
                                          localMemSize: c_int,
                                          callbackType: clfftCallbackType,
                                          userdata: *mut cl_mem,
                                          numUserdataBuffers: c_int)
                                          -> clfftStatus