Kalk is a calculator (both program and library) that supports user-defined variables, functions, and units (experimental). Project kanban board (Kolan)
- Operators: +, -, *, /, !
- Groups: (), ⌈⌉, ⌋⌊
- Pre-defined functions and constants
- User-defined functions and variables.
f(x, y) = xy,x = 5 - User-defined units (experimental).
unit m = cm/100,2m/50cm,50cm to m - Understands fairly ambiguous syntax. Eg.
2sin50 + 2xy - Syntax highlighting
- Special-symbol completion on tab. Eg. write
sqrtand press tab. It will be turned into√. - Sum function:
sum(start, to, expression)Eg.sum(1, 3, 2n+1)is the same as2*1+1 + 2*2+1 + 2*3+1=15 - Load a file including predefined functions and constants. For example, if you're going to use Kalk for physics, you load up your file with physics functions/constants when starting Kalk.
-i file - Misc: separate expressions by a semicolon to write them on the same line, use the
ansvariable to get the value of the previously calculated expression.
Pre-compiled binaries for Linux and Windows (64-bit) are available in the releases page. A Windows binary may not always be available for the newest version as of now.
Make sure you have diffutils gcc make and m4 installed. If you use windows: follow the instructions here
If anyone knows how to get gmp_mpfr_sys on Windows on Travis, let me know.
Run cargo install kalk_cli
- Go into the
kalk_clidirectory. - Run
cargo build --release - Grab the binary from
targets/release
Defining: name(parameter1, parameter2, ...) = expression
Example: f(x) = 2x+3
Using: name(argument1, argument2)
Example: f(2)
Defining: name = expression
Example: x = 3
Using: name
Example: x
Note: You only need to define the relationship between two units once. You will be able to convert between both of them.
Defining: unit name = expression
Example: unit deg = (rad*180)/π
Using: Use them freely in expressions.
Example: 2m/50cm
Converting: expression to unit
Example: 2 m to cm