Alex Walters wrote:
Other use case is finance, where you can end up with interest calculations that are fractional of the base unit of currency. US$2.345 is impossible to represent in real currency, so it has to be rounded.
This brings us back to my original point about floating point accuracy. If you do your interest calculation in floating point binary, first it's very unlikely that it will come out ending in exactly 0.5 of a cent, and secondly if you care about the details that much, you should be calculating in decimal, and being explicit about exactly what kind of rounding you're doing. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
