[Numpy-discussion] Epsilon for each dtype

Matthieu Brucher matthieu.brucher@gmail....
Mon Dec 10 05:50:13 CST 2007


Excellent, that was what I was looking for, thank you.

Matthieu

2007/12/10, Fabrice Silva <silva@lma.cnrs-mrs.fr>:
>
> Le lundi 10 décembre 2007 à 11:38 +0100, Matthieu Brucher a écrit :
> > Hi,
> > Is there somewhere a equivalent to std::numerical_limits<>::epsilon,
> > that is, the greatest value such that 1. + epsilon is numerically
> > equal to 1. ?
> > I saw something that could be related in oldnumeric, but nothing in
> > numpy itself.
>
> if X is a numpy object:
> numpy.finfo(type(X)).eps gives the epsilon of the type of X.
> You may look at other attributes of finfo too..
>
> --
> Fabrice Silva <silva@lma.cnrs-mrs.fr>
> LMA UPR CNRS 7051
>
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