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 removal of additional keyboard shortcuts, after first removal
- Fix font dialogs when "Keep above other windows" is enabled
- Fix saving of sub-function precalculate property
- Add option, in keypad button menu, to reset keypad position
- Add "Clear history" to available keyboard shortcut and button actions
- Show exchange rates source, and update time, for current calculation in tooltip
- Allow use of curly brackets as alternative parentheses
- New prime number functions: primePi(), primes(), nthprime(), nextprime(), prevprime(), and isprime() (libqalculate)
- New functions for intervals and uncertainties: upperEndpoint(), lowerEndpoint(), midpoint(), and errorPart() (libqalculate)
- Add meter of water and related pressure units, and more derived flow rate units (libqalculate)
- Support for vectors and matrices in uncertainty propagation calculation (libqalculate)
- Proper support for uncertainty propagation in total(), sum(), product(), and for() functions (libqalculate)
- Simplify display of parsed expression (primarily for quantities with units) (libqalculate)
- Avoid parsing of implicit multiplication as nested multiplication (libqalculate)
- Include +/- statement in function argument without parentheses (libqalculate)
- Return values for approximate variables in exact mode in dimension() and elements() (libqalculate)
- Improve parsing of quotation marks as feet/inch or arcmin/arcsec (e.g. do not parse s" as sin) (libqalculate)
- Fix exact calculation of re((a*i)^(n/2)) (wrong sign in some cases) (libqalculate)
- Fix erroneous calculation in some cases with physical constants both outside and inside unit relations when interval calculation is set to interval arithmetic (libqalculate)
- Fix segfaults in some corner cases (libqalculate)
- Fix use of random numbers in iterative functions (libqalculate)
- Fix writing beyond end of array during exchange rates check in some cases (results in activation of old style matrices) (libqalculate)
- Fix automatic reactivation of deactivated global object if a function with the same name exists (libqalculate)
- Do not convert function arguments which do not allow units (fixes "arcsin(0.5+/-0.1) to deg") (libqalculate)
- Fix prefix after conversion to optimal unit when the optimal unit includes a prefix (libqalculate)
- Fix exact calculation when function argument is an approximate vector variable (fail) (libqalculate)
- Minor bug fixes and feature enhancements
Download the source code here:
qalculate-qt-4.4.0.tar.gz
Download the source code of libqalculate here:
libqalculate-4.4.0.tar.gz
Windows binaries:
64-bit installer
32-bit installer
64-bit zip (unpack and run without further installation; no application data are read or written outside of the unpacked directory)
32-bit zip
The 64-bit binaries can now also be installed using the Windows Package Manager (winget). The Qt GUI requires Windows 10 or later.
GNU/Linux binaries:
A flatpak package is available at https://flathub.org/apps/details/io.github.Qalculate.qalculate-qt.
A snap package is available at https://snapcraft.io/qalculate-qt.
For more information visit the website at http://qalculate.github.io/.