Re: Cult-like behaviour [was Re: Kindness]

2018-07-13 Thread dbd
On Friday, July 13, 2018 at 4:59:06 PM UTC-7, Steven D'Aprano wrote: ... > I think that Marko sometimes likes to stir the ants nest by looking down > at the rest of us and painting himself as the Lone Voice Of Sanity in a > community gone mad *wink* ... You mean he thinks he's Ranting Rick? Dal

Re: Float precision and float equality

2009-12-11 Thread dbd
On Dec 10, 2:23 pm, Carl Banks wrote: > ... > > A useful description of floating point issues can be found: > > [snip] > > I'm not reading it because I believe I grasp the situation just fine. > ... > > Say I have two numbers, a and b.  They are expected to be in the range > (-1000,1000).  As far

Re: Float precision and float equality

2009-12-10 Thread dbd
On Dec 7, 12:58 pm, Carl Banks wrote: > On Dec 7, 10:53 am, dbd wrote: > > ... > > You're talking about machine epsilon?  I think everyone else here is > talking about a number that is small relative to the expected smallest > scale of the calculation. > > C

Re: Float precision and float equality

2009-12-07 Thread dbd
On Dec 7, 4:28 am, sturlamolden wrote: > ... > > You don't understand this at all do you? > > If you have a sine wave with an amplitude less than the truncation > error, it will always be approximately equal to zero. > > Numerical maths is about approximations, not symbolic equalities. > > > 1.0 +

Re: Float precision and float equality

2009-12-06 Thread dbd
t; > too much larger. > > > Okay, I'm confused now... I thought them being larger was entirely the > > point. > > Yes. dbd got it wrong. If both a smaller than eps, the absolute > difference is smaller than eps, so they are considered equal. Small x,y failure case: eps

Re: Float precision and float equality

2009-12-06 Thread dbd
On Dec 6, 1:12 am, Raymond Hettinger wrote: > On Dec 5, 11:42 pm, Tim Roberts wrote: > > > Raymond Hettinger wrote: > > > >   if not round(x - y, 6): ... > > > That's a dangerous suggestion.  It only works if x and y happen to be > > roughly in the range of integers. .> .> Right.  Using abs(x-y)

Re: How to create a single executable of a Python program

2007-07-25 Thread dbd
On Jul 25, 10:20 am, Larry Bates <[EMAIL PROTECTED]> wrote: > NicolasG wrote: > > Dear fellows, > > > I'm trying to create a executable file using py2exe . Unfortunately > > along with the python executable file it also creates some other files > > that are needed in order to the executable be able