Re: [Numpy-discussion] numerical noise for simple calcululations

2008-02-10 Thread dmitrey
I need just a single number "in avarage". I have committed some changes to NLP/NSP ralg solver from scikits.openopt, for non-noisy funcs it works better, but for noisy funcs vise versa, hence now my examples/nssolveVSfsolve.py doesn't work as it should be, so I need to implement "noise" paramete

Re: [Numpy-discussion] numerical noise for simple calcululations

2008-02-10 Thread Timothy Hochberg
On Sun, Feb 10, 2008 at 4:23 AM, dmitrey <[EMAIL PROTECTED]> wrote: > 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 syst

[Numpy-discussion] numerical noise for simple calcululations

2008-02-10 Thread dmitrey
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