Calcr - a small commandline calculator

This is a small commanline calculator written in Rust.

The following operators, functions, constants, and delimiters can be used in calcr:

Operators

+        - plus
-        - minus or negation
*        - muliplication
/        - division
^        - powers
!        - factorial (only works on positive integers)

Functions

sin      - sine
cos      - cosine
tan      - tangent
asin     - arcsine
acos     - arccosine
atan     - arctangent
sqrt / √ - square root
abs      - absolute value
exp      - exponentiation (e to power of)
ln       - natural logarithm (e as base)
log      - base 10 logarithm

Constants

pi / π  - the number pi
e       - Euler's number
phi / ϕ - the golden ratio

Variables

Calcr also supports defining your own variables as follows:

x = 2 + 4 * sin(0.5*pi)

However, it should be noted that case is ignored.

Exiting

In order to exit calcr, press escape, or type quit.

Building

The easiest way to build the project is to use Cargo. Navigate to the project directory and run:

cargo build --release

this will place the compiled program in the ./target directory, from where you can copy it to whereever.