text: /* See LICENSE file for copyright and license details. */
  
  #define MAX(A, B)               ((A) > (B) ? (A) : (B))
  #define MIN(A, B)               ((A) < (B) ? (A) : (B))
  #define BETWEEN(X, A, B)        ((A) <= (X) && (X) <= (B))
  
  void die(const char *fmt, ...);
  void *ecalloc(size_t nmemb, size_t size);
  char *estrdup(const char *s);
  