2 releases
Uses new Rust 2024
new 0.1.1 | Mar 23, 2025 |
---|---|
0.1.0 | Mar 23, 2025 |
#7 in #bc
23 downloads per month
69KB
2K
SLoC
evar
Welcome to evar, a feature-rich CLI calculator REPL! My goal was to create a modern, ergonomic, and simple calculator.
Features ✨
-
Basic Math Functions: Perform essential mathematical operations.
Supported operators:
+
,-
,*
,/
,%
,^
,!
Supported functions:
- Trigonometric Functions:
sin
,cos
,tan
,sec
,csc
,cot
- Inverse Trigonometric Functions:
asin
,acos
,atan
- Hyperbolic Functions:
sinh
,cosh
,tanh
- Exponential and Logarithmic Functions:
sqrt
,exp
,exp2
,ln
,log2
,log10
,log
- Angle Conversion Functions:
rad
,deg
- Rounding Functions:
floor
,ceil
,round
- Miscellaneous Functions:
abs
,log
,ntroot
- Trigonometric Functions:
-
Mathematical Notation: Write expressions like
2 sin(x)
instead of2 * sin(x)
.> 2sin(2pi/3) 1.7320508075688774 > 2 * sin(2 * pi / 3) 1.7320508075688774 > sqrt(3) 1.7320508075688772
-
Variable & Function Definition: Define your own variables and functions.
> let x = 3 3 > let y = 10 10 > let f(z, w) = z + w > f(x, y) 13
-
Neat Error Handling: Easily understand errors.
> let f(x) = error: found end of input expected expression ┌─ <repl>:1:12 │ 1 │ let f(x) = │ ---------- ^ found end of input expected expression │ │ │ while parsing this function definition
-
Persistent History: Keep a record of your calculations.
-
Realtime Input Highlight: See your input highlighted as you type.
-
Radian & Degrees Mode: Switch between radian and degrees mode.
-
And More...
Inspiration 💡
evar is inspired by eva
, another CLI calculator written in Rust.
Installation 🛠️
Usage 🚀
Modern ergonomic math calculator inspired by eva
Usage: evar [OPTIONS]
Options:
-a, --angle-unit <ANGLE_UNIT> Angle Unit [default: radian] [possible values: radian,
degree]
--no-color Enable colored output
-f, --fix <FIX> Number of decimal places in output (0-63) [default: No
ne]
-d, --debug Print parsed expression for debug purpose
-h, --help Print help
-V, --version Print version
Contributing 🤝
Contributions are welcome via GitHub.
License 📜
This project is licensed under the MIT License.
Dependencies
~13–21MB
~265K SLoC