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


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SMath Studio - SMath
Created by SMath LLC in the scope of SMath project. Published by smath.

SMath Studio

SMath Studio box
 
 
 
 
 
 
 
 
 
 

Tiny, but powerful 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.

Free for personal usage! Plans for Organizations are available!

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.

Excellent software, a great job, we must support with financial contributions. Good job Andrey and the sponsors and creators. more...

by Miguel Aguilar Suárez

May God reward the developers, for filling the vacuum left after MathCad. Thank you very very much. more...

by Zsolt Roman

Excelente software para cálculo. La interface tipo papel la hace muy versátil y amigable. La recomiendo ampliamente. more...

by Tomás Soto

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)

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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://smath.com/wiki/SMath_with_Plugins.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://smath.com/wiki/SMath_with_Plugins.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)
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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 36 time(s).


Martin Kraska

Pre-configured portable distribution of SMath Studio: https://smath.com/wiki/SMath_with_Plugins.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)
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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
If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects
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