limity.h

gcc库的原代码,对编程有很大帮助.

/* This administrivia gets added to the end of limits.h
   if the system has its own version of limits.h.  */

#else /* not _GCC_LIMITS_H_ */

#ifdef _GCC_NEXT_LIMITS_H
#include_next <limits.h>		/* recurse down to the real one */
#endif

#endif /* not _GCC_LIMITS_H_ */