subtraction of floating point numbers
alain at dpt-info.u-strasbg.fr
Fri Feb 24 09:49:15 CET 2012
Jaroslav Dobrek <jaroslav.dobrek at gmail.com> writes:
> when I have Python subtract floating point numbers it yields weird
> results. Example:
> 4822.40 - 4785.52 = 36.8799999999992
We've had this discussion here one or two days ago...
The usual answer is: please read "What Every Computer Scientist Should
Know About Floating Point Arithmetic", at:
and check the answers posted these last days. In brief: you're working
with floating point numbers, not reals (i.e., real "reals"). That's
life. Deal with it, or move to specialized packages, like decimal.
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