|Floating point numbers should be compared in terms of a small tolerance.
That is a wonderful
point! Many thanks. I have been so used to Perl taking care of the nitty gritty numeric stuff, that I didn't even think of that.
An implementation in terms of atan2 would be better...
I had originally used atan2(), simply for the lack of an inverse-cosine function.. until I was pointed to Math::Trig and told to use it ;) So i just haphazardly switched, never considering accuracy issues.
Thanks a lot for the pointers. They're greatly appreciated =)
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