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| Date | Mon, 5 Sep 2011 23:18:30 -0700 |
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| Subject | Re: Floating point multiplication in python |
| From | Chris Rebert <clp2@rebertia.com> |
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On Mon, Sep 5, 2011 at 10:57 PM, xyz <xyzhtml@163.com> wrote: > hi all: > > As we know , 1.1 * 1.1 is 1.21 . > But in python ,I got following : > >>>> 1.1 * 1.1 > 1.2100000000000002 > > why python get wrong result? It's not Python's fault per se, rather it's the inherent nature of binary floating-point arithmetic. Try the equivalent in most other languages and you'll get the same "error". Please read http://docs.python.org/tutorial/floatingpoint.html Cheers, Chris
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Re: Floating point multiplication in python Chris Rebert <clp2@rebertia.com> - 2011-09-05 23:18 -0700
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