Akim Demaille wrote: > > Gnulib has modules integer_length, integer_length_l, integer_length_ll. > > Oh, yes. Why these names?
The name 'integer-length' comes from ANSI Common Lisp [1]. The suffixes exist because in C we need 3 different functions for 'unsigned int', 'unsigned long', and 'unsigned long long' arguments. > "fls" feels more "natural" in front of fss. > But just as cryptic indeed. > > I can see it is not POSIX, but > > https://www.freebsd.org/cgi/man.cgi?query=fls&sektion=3&manpath=FreeBSD+7.1-RELEASE ANSI Common Lisp predates FreeBSD 5.3 by 15 years :-) Bruno [1] http://www.ai.mit.edu/projects/iiip/doc/CommonLISP/HyperSpec/Body/fun_integer-length.html
