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Offline Andrey Ivashov  
#1 Posted : 28 February 2018 22:28:06(UTC)
Andrey Ivashov


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New Beta SMath Studio 0.99.6633 is available!

Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.

It provides numerous computing features and rich user interface translated into about 40 different languages. Application also contains integrated mathematical reference book.

SMath Studio boxCalculation of Gravitation Acceleration exampleExample of animation on the WorksheetExtensions Manager toolOpened math Reference BookSMath Viewer output to Autocad exampleSMath Studio on iOSSMath Studio on iPad

Application can be easily extended based on your needs. Built-in Extensions Manager tool allows to get access to hundreds official and third-party resources of the following types: usage examples, plug-ins, SMath Viewer based applications, snippets, interface translations, interactive books, handbooks and tutorials.

Changes introduced in current build

Improvements

  • Step Into toolbar button made available even if evaluation is not paused - in this mode it allows to start evaluation and pause it in the first available action (no need to set Breakpoint to start debugging).

Corrections

  • SS-3508: Page elements invalidation related issues fixed;
  • SS-3509: Localization specific functions names formatting corrected;
  • SS-3510: Rounding issue happened sometimes when Significant figures mode is turned on fixed;
  • Numbers rounding normalized: when a number is halfway between two others, it is rounded toward the nearest number that is away from zero;
  • Inactive page area is invalidated when required now (in Pages view).

Miscellaneous

  • Fixed issue with editable Reference Book articles;
  • Refactoring.

Download

Software icon SMathStudioDesktop.0_99_6633.Setup.msi (Date: 2018.02.28; File size: 2.14 MB) - 283 downloads
Software icon SMathStudioDesktop.0_99_6633.Mono.tar.gz (Date: 2018.02.28; File size: 1.27 MB) - 44 downloads
thanks 7 users thanked Andrey Ivashov for this useful post.
on 28/02/2018(UTC),  on 28/02/2018(UTC),  on 28/02/2018(UTC),  on 01/03/2018(UTC),  on 01/03/2018(UTC),  on 01/03/2018(UTC),  on 01/03/2018(UTC)
Offline mkraska  
#2 Posted : 28 February 2018 23:44:03(UTC)
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I had hoped for round-half-to-even instead of away from zero.
  • This is IEEE 754 default rounding mode
  • It is most common in engineering
  • It is the way I teach my students


What is the motivation of the design decision of rounding half away from zero?




Martin Kraska

Pre-configured portable distribution of SMath Studio: https://en.smath.info/wi...th%20with%20Plugins.ashx
Offline mkraska  
#3 Posted : 01 March 2018 00:03:29(UTC)
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The step-in feature without breakpoints is great.
This is a major step towards a very convenient context-inspector.

IMHO these features could be useful:
- Context display at cursor location (what you would see if there was a breakpoint there), perhaps some execute-to-cursor button
- Reliable call-outs for dynamic formatted display of the context items (currently, sometimes the callout doesn't show up)
Martin Kraska

Pre-configured portable distribution of SMath Studio: https://en.smath.info/wi...th%20with%20Plugins.ashx
Offline Andrey Ivashov  
#4 Posted : 01 March 2018 00:29:14(UTC)
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Martin, I'm recieving many e-mails regarding "rounding is unpredictable".
Personally I do not see significant benefits from round-half-to-even (because SMath Studio never knows source of the data it works with), but this, of course, has no sence.
Offline mkraska  
#5 Posted : 01 March 2018 01:26:41(UTC)
mkraska


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Originally Posted by: Andrey Ivashov Go to Quoted Post
Martin, I'm recieving many e-mails regarding "rounding is unpredictable".
Personally I do not see significant benefits from round-half-to-even (because SMath Studio never knows source of the data it works with), but this, of course, has no sence.


The benefit is that if summing up large numbers of rounded numbers then you don't get a systematic bias.
In round away from zero this is true only if the distribution of the numbers is symmetric to zero.

Maxima implements round to even.

As the type of rounding seems to be a matter of taste I would recommend to make this a settings item, at least for result formatting. For explicit rounding one could have separate functions or an optional argument.

2018-02-28 23_22_39-SMath Studio - [roundtest.sm].png
roundtest.sm (8kb) downloaded 19 time(s).


Martin Kraska

Pre-configured portable distribution of SMath Studio: https://en.smath.info/wi...th%20with%20Plugins.ashx
Offline CBG  
#6 Posted : 01 March 2018 02:06:33(UTC)
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The Text Region Utilities plugin fails to start


Text_Region_Utilities_Fail.png


Best Regards

Carlos
Offline Jean Giraud  
#7 Posted : 01 March 2018 06:39:42(UTC)
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Originally Posted by: Andrey Ivashov Go to Quoted Post
Martin, I'm recieving many e-mails regarding "rounding is unpredictable".
Personally I do not see significant benefits from round-half-to-even (because SMath Studio never knows source of the data it works with), but this, of course, has no sence.

====================================
Well, there is "rounding & rounding" ... most interesting:
http://mathworld.wolfram.com/RoundoffError.html

Nothing is absolutely true in this world.
1. NO math computations are true.
2. NO measurements are true.
3. NOT all minutes have 60 seconds ... What !

Yes "What" ... once in a while there is a Savant Lab [in Paris]
that adjusts the universal time ± 1 second.
I can survive the conventional ½ way up/down.

Cheers ... Jean.

Offline Davide Carpi  
#8 Posted : 01 March 2018 12:17:38(UTC)
Davide Carpi


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Originally Posted by: CBG Go to Quoted Post
The Text Region Utilities plugin fails to start


Text_Region_Utilities_Fail.png


Best Regards

Carlos


Updated, thank you! Good
Best regards,

Davide

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