mirror of https://github.com/rm-dr/daisy
65 lines
1.9 KiB
Markdown
65 lines
1.9 KiB
Markdown
|
|
|
|
A high-precision scientific calculator with support for units, derivatives, and more.
|
|
|
|
Many features are missing, this is still under development.
|
|
|
|
# 📦 Installation
|
|
- **Arch:** `yay -S daisy`
|
|
- **Debian:** coming soon
|
|
|
|
From source: `cargo build --release` \
|
|
Binary will be in `target/release/daisy`
|
|
|
|
|
|
# 📹 Screenshot
|
|
|
|
|
|
|
|
# 🛠️ Features
|
|
- Open-source
|
|
- Extremely high precision
|
|
- Uses a rational datatype when possible, and a high-precision float when not.
|
|
- Pretty printing in prompt (with special substitutions)
|
|
- Supports many physical units, with metric and binary prefixes
|
|
- Supports exponential notation
|
|
- Clear syntax, parsed input is always re-printed as a sanity check.
|
|
- Useful, detailed error messages
|
|
|
|
|
|
# 📑 Usage
|
|
|
|
All documentation is built into the prompt. Use the `help` command to view it.
|
|
|
|
## Evaluate expressions:
|
|
- Basic math: ``103 / 2 * 43``
|
|
- Functions: ``sqrt(1.4^3 + 4) * sin(pi / 4)``
|
|
- Scientific notation: ``1.2e12 * 1e-5``
|
|
|
|
## Physical units
|
|
- Unit operations: ``2 day + 1 hour``
|
|
- Unit conversion: ``2 day + 1 hour to minutes``
|
|
- Compound units: ``10 m/s to mph``
|
|
- Conversion errors: ``1 liter to volt``
|
|
|
|
## Varables
|
|
- Previous answer: `ans + 2`
|
|
- Variable assignment: `a = 143`
|
|
|
|
|
|
# 🌹 Additional Notes
|
|
|
|
## Unit Conversion
|
|
|
|
The conversion operator `to` converts its left argument to the *unit* of its right argument, ignoring its value. For example, `5m to mi` and `5m to 10mi` are identical.
|
|
|
|
|
|
## Multiplication Order
|
|
|
|
Implicit multiplication has a higher priority than division. `pi/2 radians` will parse as `pi/(2 radians)`. Type `(pi/2) radians` or `pi/2 * radians` to get 90 degrees.
|
|
|
|
|
|
|
|
## Inline Assignment
|
|
|
|
The assignment operator `=` returns its value, and can thus be used inside of an expression. For example, `(a = 2) + 2` assigns `a` to `2` and returns `4`. This only works for variable assignment. |