Update: About 0.30000000000000004 and about 0.16999999999999993... I am thinking, who really needs a 17 decimal digits long significand? Suggestion: round the significand to 15 decimal digits just before outputting the final result.
About --help... I found out what most of the functions are, and I realize that mentioning them in the --help text would be impossible -- the list is HUGE. So, maybe a simple URL there? And maybe an accompanying doc in some form the tarball?
