This library provides some functions commonly available on bsd systems but not on others like gnu systems.

the currently provided functions are:

* _time32_to_time, _time_to_time32, _time64_to_time, _time_to_time64,
_time_to_long, _long_to_time, _time_to_int, _int_to_time.
* md5data, md5end, md5file, md5filechunk, md5final, md5init, md5pad,
md5transform, md5update.
* arc4random, arc4random_addrandom, arc4random_buf, arc4random_stir,
arc4random_uniform.
* bsd_getopt.
* be16dec, be32dec, be64dec, le16dec, le32dec, le64dec.
* be16enc, be32enc, be64enc, le16enc, le32enc, le64enc.
* closefrom.
* expand_number, dehumanize_number, humanize_number, strtonum, fmtcheck.
* explicit_bzero.
* errc, verrc, vwarnc, warnc.
* fgetln, fparseln, fgetwln, flopen, fpurge, funopen.
* getbsize.
* getmode, setmode, strmode,
* getpeereid.
* getprogname, setprogname.
* heapsort, radixsort, mergesort, sradixsort.
* nlist (elf and a.out support).
* pidfile_open, pidfile_write, pidfile_close, pidfile_remove.
* readpassphrase.
* reallocarray, reallocf.
* setproctitle (initialized via libbsd-ctor or setproctitle_init).
* sl_init, sl_add, sl_free, sl_find.
* strlcpy, strlcat.
* strnstr.
* strnvis, strnunvis, strunvis, strunvisx, strvis, strvisx, unvis, vis.
* wcslcat, wcslcpy.
also included are some queue macro definitions not present on includes from glibc.