[Numpy-discussion] numerical noise for simple calcululations

dmitrey dmitrey.kroshko@scipy....
Sun Feb 10 05:23:59 CST 2008


hi all,
I need a good estimation of noise value for simple calculations.

I.e. when I calculate something like sin(15)+cos(80) I get a solution 
with precision, for example, 1e-11.

I guess the precision depends on system arch, isn't it?

So what's the best way to estimate the value?

I guess here should be something like 10*numpy.machine_precision, isn't it?
Regards, D.




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