lib/stack.h


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#pragma once

#include <inttypes.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>

#include "types.h"

typedef struct ll_tag {
  v_t x;
  struct ll_tag *next;
} ll_t;

typedef struct dll_tag {
  double x;
  struct dll_tag *next;
} dll_t;

void stack_push(ll_t **q, v_t x);
void stack_push_d(dll_t **q, double x);

v_t stack_pop(ll_t **q);
double stack_pop_d(dll_t **q);