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Re: Bad math

by moritz (Cardinal)
on Oct 31, 2011 at 15:08 UTC ( #934901=note: print w/replies, xml ) Need Help??


in reply to Bad math

FWIW Perl 6 solves this problem by doing math in rational numbers by default:

$ perl6 -e 'say -53.80 + 46.70' -7.1

See also: What Every Computer Scientist Should Know About Floating-Point Arithmetic and rats and other pets.

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[stevieb]: use metamod::DateTime. Don't fsck around. Seriously. As someone who's done sensitive date/time stuff, don't roll your own. Use what is available and known stable. Do not guess.
[stevieb]: Date::Time even
[stevieb]: ffs I can't make DateTime link properly, so there.

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