如何存储指向Fsm中带有参数的函数的指针？

Question

我想在FSM中实现带有参数的函数。 当我尝试此操作时，会出现此错误

rollapply

代码如下：

dates_v <- seq(as_date("2018-01-01"), as_date("2018-09-14"), by = "days") 

df <- data.frame(dates = rep(dates_v,sample(seq(9000,11000), length(dates_v), replace = TRUE))) %>%
  mutate(values = rnorm(length(dates)))

Answer 1

初始化函数的指针时不能设置参数，该参数应声明为struct的另一个成员

typedef struct  {
    void (*fun)(unsigned long);
    unsigned long out;
    unsigned long delay;
    unsigned long Next_State[4];
} state ;

state fsm[4] = {
    {DriveCenter,86,50,{stop,right,left,stop}},
    {DriveRight,45,50,{stop,right,left,stop}},
    {DriveLeft,787,50,{stop,right,left,stop}},
    {DriveStop,33,50,{stop,right,left,stop}}
};

在C11下，您可以使用匿名struct来说明这两个变量可以协同工作：

typedef struct  {
    struct {
        void (*fun)(unsigned long);
        unsigned long out;
    };
    unsigned long delay;
    unsigned long Next_State[4];
} state ;

state fsm[4] = {
    {{DriveCenter,86},50,{stop,right,left,stop}},
    {{DriveRight,45},50,{stop,right,left,stop}},
    {{DriveLeft,787},50,{stop,right,left,stop}},
    {{DriveStop,33},50,{stop,right,left,stop}}
};