29-Sept-2007 - galculator 1.3.1 released.
This release fixes some minor bugs in build process and GUI. Download version 1.3.1 here. Update: I added a slightly patched version of 1.3.1 to the download page, that compiles and runs in cygwin.

galculator is a GTK 2 based calculator with ordinary notation/reverse polish notation, a formula entry mode, different number bases (DEC, HEX, OCT, BIN) and different units of angular measure (DEG, RAD, GRAD).

[a basic calculator] galculator features two user modes: basic and scientific mode. Basic mode is intended for simple computations. Only the most important operations and functions are available in algebraic mode as well as in Reverse Polish Mode. Formula entry, available for the basic as well as for the more sophisticated scientific mode, aims to make the calculator even more user friendlier: type as you would write on a paper!

[a scientific calculator] Scientific Mode is galculator's state-of-the-art. It supports different number bases (DEC/HEX/OCT/BIN) and angle units (DEG/RAD/GRAD) and features a wide range of mathematical (basic arithmetic operations, trigonometric functions, etc), other useful functions (memory, etc) and user defined functions. Of course, algebraic mode as well as Reverse Polish Notation are available. See below for a detailed list of supported functions.

[an easy to use calculator] As of version 1.3, galculator features a so-called paper mode. The motiviation for this view originates from a proposal for a new desktop calculator GUI ([1], [2]), which tries to go beyond the rather clumsy imitation of real calculators software desktop calculators try to achieve (e.g. galculator's own basic and scientific mode).

[a GTK 2 based calculator] galculator is written entirely in C and uses GTK version 2. Especially the display takes big advantages of the new possibilities in GTK 2. Have a look at the screenshots section to see what I'm talking about.

[why another calculator] Some time ago, I was looking for a GTK based calulator. Nothing special, just for simple computations. But I wasn't able to find one. This application lacked full keypad support, that one didn't know hexadecimal numbers. Therefore I decided to write my own calculator application with all the features I'd expected others to have.

[present ...] galculator's main features include

• Algebraic mode, RPN (Reverse Polish Notation), Formula Entry mode and Paper mode
• decimal, hexadecimal, octal and binary number base
• radiant, degree and grad support
• arithmetic precedence
• Basic and Scientific Mode
• user defined constants
• user defined functions

Other features are

• trigonometric functions
• power, sqare root
• natural and common logarithm
• inverse and hyperbolic functions
• memory functions
• logical operations
• display RPN stack
• preferences dialog/configuration file
• display modules
• X pasting
• i18n
• configurable variable type in HEX/BIN/OCT mode
• thousands separator

[... and future] For future plans see the TODO file in CVS. Probably, there will be no big feature updates on galculator in the near future, if you'd like to contribute you're very welcome. Future releases will be for bigfixes mostly.