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- Content .- Fans (2) .- Knowledge Base  . 



KDE Scientific

Score 83%

Link:  Link
Minimum required   Qt 4.x
Downloads:  4914
Submitted:  Oct 2 2004
Updated:  Jun 3 2008


SpeedCrunch is a fast, high precision and powerful desktop calculator. Available for Linux, Microsoft Windows, and Mac OS X.

Few of its distinctive features are:

* scrollable display
* up to 50 decimal precisions
* unlimited variable storage
* intelligent automatic completion
* full keyboard-friendly
* more than 50 built-in math functions
* optional keypad

And enjoy also the convenience featurelets:

* on-the-fly calculation
* customizable appearance
* syntax highlight, with parentheses matching


SpeedCrunch 0.10.1
Bug fixes:
Fixed keypad button "=" [#176]
Fixed incomplete math book link upon clicking [#177]
Fixed potential crashes [#180]
Fixed back and forward buttons have the opposite meaning in RTL [#185]
Fixed missing window update on radix character change
Updated binreloc to build in LSB environments

Better handling of math book translations with language codes that contain
the country component and now correct behaviour defaulting to English when
the system language (selected option) is not supported

New Basque, Catalan and Simplified Chinese translation
Updated translations
Removed Slovenian language menu entry, since there is no such translation

New Mac OS X Universal Binary finally available (first since version 0.7)

SpeedCrunch 0.10
New features:
Preliminary support of logic functions
Extended output of real-valued numbers to non-decimal modes
Allow real-valued arguments for nPr and nCr
Restore last session
Save and load session
Ability to change language on-the-fly
Context menu for tray icon
Support for RTL (right to left) written languages
Batch calculation
Minimal view version
Default desktop file for menu integration
New Turkish (incomplete) translation
Math Book browsable pages in a dock window
Compile-time option to build a "portable" target
Full screen mode
Automatic syntax highlighting color generation
Status bar
Auto-calc of the selected text

New functions:
ERF: the normalized error function (related to normal distribution)
ERFC: the complementary error function
GAMMA: the extension of the factorials (x-1)!
LNGAMMA: ln(Gamma(x)) for x > 0
IDIV: integer division
MOD: modulo

Improved binomCdf evaluation allows n to be as big as 20000 now
Improved keypad
Testevaluator independent of locale (does not use ',' any more)
Exp/Log inconsistency
New keyboard shortcuts (including PagDown/PgUp to scroll result display)
Redesigned menus
Optional widgets created and destroyed on the fly, optimal for mobile
Click to copy and double click to insert an expression from the display into
the expression editor
Errors displayed in modal dialog instead of result display
Selecting and inserting an expression does not trigger evaluation

Bug fixes:
Fixed loss of precision on variable saving
Fixed clobbering of ans on radix change
Fixed a bug in the math engine (float_frac) that could cause memory corruption
Bugfix in the pochhammer symbol evaluating routine, affecting nPr
when n and r are negative integers, and n == r-1
Bugfix: No freeze any more when evaluating (-n+0.5)! for very large integers n
Bugfix: cbrt fixed for values 1+x with x

Source(source code)
MS Windows(Microsoft Windows installler)
MS Windows(Microsoft Windows portable edition)
Mac OS X(Apple Mac OS X universal package)
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 Time computations

 by vrabcak on: Jan 28 2006
Score 50%

I found this app very handy and useful. Thank you for the job!
But I am missing one feature. I would like to do calculations with time values for example 160 min + 10 hours, show 3250 seconds in hours, minutes and seconds, add 120 days to 1st July 2004 and so on. I am missing such simple time calcularor on both Windows and Linux, so I hope speedcrunch will implement it :-)

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 Re: Time computations

 by pawn on: Apr 30 2007
Score 50%

did you try date?
date -d "2004/7/4 00:00 +120 days"
date -d "2001/1/1 00:00 +160 min + 3 hours"

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 Accuracy v Precision

 by derekroconnor on: Sep 4 2006
Score 50%

I have just downloaded SpeedCrunch Version 0.7 Beta-1 and performed the following tests, using 50-digit precision:

SPCR sin(10^22 )= -8.52200 | 918050626935619363157432839453863959329520531e-1
PariGP sin(10^22) = -8.52200 | 84976718880177270589375302936826176215041004e-1
SPCR cos(10^22) = +5.23214 | 674176545467019501300134952278548556645769073e-1
PariGP cos(10^22) = +5.23214 | 78539513894549759447338470949214091997243939e-1

As you can see, SpeedCrunch performs very badly. It may have high precision, but it has only 6-digit accuracy in these tests. By the way, the standard Windows 2000 desk-top calculator has 32-digit accuracy.

If you want to see how difficult it is to write real numerical software, have a look at this paper : http://www.derekroconnor.net/home/PAPERS/Ng--ArgReduction.pdf

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 Re: Accuracy v Precision

 by derekroconnor on: Oct 9 2006
Score 50%

The link to Ng's paper should be


Derek O'Connor
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 , as decimalpoint

 by mokkel on: Sep 14 2006
Score 50%

In Norwegian we use , and not . as decimalpoint. I haven't found any settings in 0.7-beta1 (win32) where I can select this.

The best thing would be to use the systems locale settings.

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 Re: , as decimalpoin

 by ariya on: Oct 11 2006
Score 50%

Will be considered in the future version.

Meanwhile, if you press comma (,), it will be regarded as point (.).

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 Re: , as decimalpoin

 by ariya on: Jul 26 2007
Score 50%

So this is now supported in version 0.8.

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 Qt4 problem

 by amdfanatyk on: Jul 27 2007
Score 50%

Can You provide static binary file?

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 Old version!

 by anupamsr on: Mar 4 2008
Score 50%


I don't have Qt4 and I don't have permission to install it on my computer. Could you please provide any old tar ball? (I looked through the revision and it seems that Qt3->Qt4 change was done around version 7... so please provide me a link to version 6 tarball!


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 Compile problems

 by liquidat on: Jun 5 2008
Score 50%

I tried to compile the newest version. However, CMakeLists.txt says:
cp ARGS -f i18n/*.qm ${speedcrunch_TRANSLATION_DIR}
But there are no qm files i that directory in the newest version (0.10.0 still has them!).

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 Re: Compile problems

 by helder on: Jun 10 2008
Score 50%

liquidat: you need to run "lrelease speedcrunch.pro" to build the QM files. It will be fixed in the next version, see http://code.google.com/p/speedcrunch/issues/detail?id=194

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