Announcing Windows 10 Insider Preview Slow Build 17115 - Mar. 6 Insider

Page 15 of 15 FirstFirst ... 5131415

  1. Posts : 4,224
    Windows 10
       #140

    Just got a GSOD on the first reboot after attempting install of 17115 on my son's i7-4770K/Asrock Z97 Fatal1ty Killer build. Rebooted again, hit restart in Settings/Windows Update and it went through OK on 2nd try. Weird.
    --Ed--
      My Computers


  2. Posts : 3,453
       #141

    EdTittel said:
    Just got a GSOD on the first reboot after attempting install of 17115 on my son's i7-4770K/Asrock Z97 Fatal1ty Killer build. Rebooted again, hit restart in Settings/Windows Update and it went through OK on 2nd try. Weird.
    --Ed--
    Some OT quickly (b'cos weirdness is interesting.. )

    Let’s do some basic maths together. Please use your head first. Highlight the next two lines to see the respective answers.
    What is the square root of four? It’s two, isn’t it?
    And what do you get if you subtract two from two? Zero, right?
    Now let’s do the above calculation using the Windows calculator. Type in 4, take the square root and from the result subtract 2. What do you get now?
    Source: 5 Weird Windows Bugs Easter Eggs You Have To See

    Still there with the UWP calc ... even tried squaring the result (thinking the correct answer may be in memory but nope...)

    Windows 10 S mode for schools?... Hmmm
      My Computer


  3. Posts : 15,441
    Windows10
       #142

    Superfly said:
    Some OT quickly (b'cos weirdness is interesting.. )


    Source: 5 Weird Windows Bugs Easter Eggs You Have To See

    Still there with the UWP calc ... even tried squaring the result (thinking the correct answer may be in memory but nope...)

    Windows 10 S mode for schools?... Hmmm
    There is nothing new in this - all computing languages have worked like this. Basically, the algorithms for calculating square roots use numerical interation to calculate a square root.

    This example uses the most basic algorithm

    Rx new = (X/Rx old + Rx old)/2

    E.g. start with a guess like this

    initial guess Rx old- 1

    so this calculates Rx new as (4/1 + 1)/2 = 2.55

    The Rx old becomes Rx new

    (4/2.5 + 2.5)/2 = 2.05

    (4/2.05 + 2.05)/2 = 2.0006 ( to 4 sig figs)

    Repeat many times and eventually it converges to the lowest precision that the computer can hold for numbers, and for all numbers there will never be an exact convergence, so eventually it will be 1.9999999999999999999999...............................9 or 2.00000000000000.................................1.

    Good old FORTRAN programmers knew about real number machine precision in the 60's!
      My Computer


  4. Posts : 50,055
    Windows 10 Home 64bit 21H1 and insider builds
       #143

    cereberus said:
    There is nothing new in this - all computing languages have worked like this. Basically, the algorithms for calculating square roots use numerical interation to calculate a square root.

    This example uses the most basic algorithm

    Rx new = (X/Rx old + Rx old)/2

    E.g. start with a guess like this

    initial guess Rx old- 1

    so this calculates Rx new as (4/1 + 1)/2 = 2.55

    The Rx old becomes Rx new

    (4/2.5 + 2.5)/2 = 2.05

    (4/2.05 + 2.05)/2 = 2.0006 ( to 4 sig figs)

    Repeat many times and eventually it converges to the lowest precision that the computer can hold for numbers, and for all numbers there will never be an exact convergence, so eventually it will be 1.9999999999999999999999...............................9 or 2.00000000000000.................................1.

    Good old FORTRAN programmers knew about real number machine precision in the 60's!
    And yet there are calculators on the web that can do it try https://web2.0calc.com/
      My Computer


  5. Posts : 3,453
       #144

    cereberus said:

    Good old FORTRAN programmers knew about real number machine precision in the 60's!
    Thanx.. Yep... can't argue with that!
      My Computer


  6. Posts : 3,453
       #145

    kado897 said:
    And yet there are calculators on the web that can do it try https://web2.0calc.com/
    Excel has it covered as well...

    Announcing Windows 10 Insider Preview Slow Build 17115 - Mar. 6-capture.png

    One wonders how much really new code is in Windows 10 (apart from the XAML stuff)?
      My Computer


  7. Posts : 50,055
    Windows 10 Home 64bit 21H1 and insider builds
       #146

    Superfly said:
    Excel has it covered as well...

    Announcing Windows 10 Insider Preview Slow Build 17115 - Mar. 6-capture.png

    One wonders how much really new code is in Windows 10 (apart from the XAML stuff)?
    Not a lot I think.
      My Computer


  8. Posts : 2,666
    Windows 11 21H2 (22000.593)
       #147

    IO just tried sqrt(4) -2 on the calc in 17618 - and I get 0.
      My Computers


  9. Posts : 4,666
    Windows 10 Pro x64 21H1 Build 19043.1151 (Branch: Release Preview)
       #148

    johngalt said:
    IO just tried sqrt(4) -2 on the calc in 17618 - and I get 0.
    So does my over 20 year old calculator do too:
    Announcing Windows 10 Insider Preview Slow Build 17115 - Mar. 6-sqrtof4minus2.png
      My Computers


  10. Posts : 2,666
    Windows 11 21H2 (22000.593)
       #149

    I have an HP 48gx lying around somewhere, but not gonna be bothered trying it out. I know the Precision on it is infinitesimally email.
      My Computers


 

  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 15:24.
Find Us




Windows 10 Forums