[ENH] fltconsts-raok

Stephan Rudlof sr at evolgo.de
Wed Oct 23 00:44:07 UTC 2002


Richard,

I have tried (first num is the given epsilon):

{2.220446049250313e-16. 2.220446049250312e-16. 2.220446049250311e-16.
2.220446049250312e-16 + 2.220446049250312e-16. 0 + 2.220446049250312e-16. 1
+ 2.220446049250312e-16}
  collect:
    [:num | String streamContents: [:s | num absPrintExactlyOn: s base: 10]]

->
#('2.220446049250313e-16' '2.220446049250312e-16' '2.2204460492503109e-16'
'4.440892098500624e-16' '2.220446049250312e-16' '1.0000000000000002')


Not a big difference, but: could it be that 2.220446049250312e-16 is the
real epsilon? At least it is exactly representable and gives a new number if
added to 0.0 or 1.0 ...


Greetings,

Stephan


ok at cs.otago.ac.nz wrote:
> from preamble:
> 
> "Change Set:		fltconsts-raok
> Date:			10 October 2002
> Author:			Richard A. O'Keefe
> 
> Provide maxVal, minVal, and epsilon for Float"!


-- 
Stephan Rudlof (sr at evolgo.de)
   "Genius doesn't work on an assembly line basis.
    You can't simply say, 'Today I will be brilliant.'"
    -- Kirk, "The Ultimate Computer", stardate 4731.3




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