+.Dl "strtoll(str, (char **)NULL, 10);"
+.Pp
+While the
+.Fn atol
+and
+.Fn atoll
+functions use the current locale, the
+.Fn atol_l
+and
+.Fn atoll_l
+functions may be passed locales directly. See
+.Xr xlocale 3
+for more information.
+.Sh IMPLEMENTATION NOTES
+The
+.Fn atol ,
+.Fn atoll ,
+.Fn atol_l ,
+and
+.Fn atoll_l
+functions are thread-safe and async-cancel-safe.
+.Pp