c - syslog.h中的 "0-big number"是什么意思？

Question

我是中国人，我在看syslog.h，发现一个词“0-big number”我看不懂术语“0-大数”，谁能解释一下这个术语？

/*
* priorities/facilities are encoded into a single 32-bit quantity, where the
* bottom 3 bits are the priority (0-7) and the top 28 bits are the facility
* (0-big number).  Both the priorities and the facilities map roughly
* one-to-one to strings in the syslogd(8) source code.  This mapping is
* included in this file.

/* facility codes */
 #define LOG_KERN    (0<<3)  /* kernel messages */
 #define LOG_USER    (1<<3)  /* random user-level messages */
....
*/

Answer 1

作者刚刚决定将 28 个集合位 (2^28 - 1) 称为一个大数，而不是将其写出来。所以这不是一个术语，而是指零到大数。