Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation). Features include a large library of customizable functions, unit calculations and conversion, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface (GTK+, Qt, and CLI).
Changes:
- Fix memory leaks
- Fix segfault with recursive (self-referencing) function
- Fix input of negative exponent in scientific e notation with RPN syntax
- Fix parsing of 1°2'3" as 1°+2'+3"
- Fix definite integral for 1/sqrt(1-x^2), with limits higher/lower than or equal to -1 and 1
- Fix crash with empty vector in plot function, e.g. plot([])
- Fix "did you mean..." warning for two implicitly multiplicated functions without space between (e.g. "atan2(a,b)atan2(c,d)")
- Fix inability to abort randpoisson() with very high rate value
- Fix Calculator::reset()
- Improve handling of "where" expressions with inequalities
- Place n and C last in variable isolation priority order
- Remove unnecessary calculation for output of integers with non-decimal number base (fixes delay with very high precision)
- Add nmi symbol for nautical mile
- Add free_thread_caches() function
- Add Calculator::parseToExpression()
- Disable load() and export() functions when --disable-insecure compile option is enabled
- Fix saving of percentage interpretation in qalc
- Fix save definitions option in qalc
- Fix interpretation of mH₂O, and related units with Unicode subscript in qalc
- Fix line break for output from command line expression or file, before interactive mode
- Avoid asking questions when reading commands/expressions from file before interactive mode
- "unkeep" command (reverse of "keep")
- Support abbreviations for scientific (sci) and engineering (eng) as options for scientific notation (exp)
- Show error for unrecognized command line options when expression is separated from options by "--"
- Do not show single input decimal number as fraction by default if small or large enough to be displayed using scientific notation
- Minor bug fixes and feature enhancements
For changes in the GUIs, see the release notes for qalculate-gtk and qalculate-qt
Download the source code here:
libqalculate-5.3.0.tar.gz
Download the source code for the graphical user interfaces (qalculate-gtk and qalculate-qt) here:
qalculate-gtk-5.3.0.tar.gz
qalculate-qt-5.3.0.tar.gz
Download Windows binaries here:
64-bit installer
64-bit zip (unpack and run without further installation; no application data are read or written outside of the unpacked directory)
The binaries can also be installed using the Windows Package Manager (winget). The new Qt GUI requires Windows 10 or later. 32-bit binaries (installer and zip) are also available but do not include the Qt GUI.
GNU/Linux binaries:
flatpak packages are available at https://flathub.org/apps/details/io.github.Qalculate.qalculate-qt (Qt GUI) and https://flathub.org/apps/details/io.github.Qalculate (GTK GUI).
snap packages are available at https://snapcraft.io/qalculate-qt (Qt GUI) and https://snapcraft.io/qalculate (GTK GUI).
64-bit (x86) self-contained binaries (GTK GUI) (extract and run from anywhere on most GNU/Linux distributions; no translations included)
For more information visit the website at http://qalculate.github.io/.