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https://github.com/cariad/vinculum
Python package for large numbers with high precision
https://github.com/cariad/vinculum
data-science fractions mathematics python
Last synced: 19 days ago
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Python package for large numbers with high precision
- Host: GitHub
- URL: https://github.com/cariad/vinculum
- Owner: cariad
- License: mit
- Created: 2022-12-09T08:46:44.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2023-09-25T14:02:44.000Z (about 1 year ago)
- Last Synced: 2024-10-09T20:58:11.570Z (28 days ago)
- Topics: data-science, fractions, mathematics, python
- Language: Python
- Homepage: https://cariad.github.io/vinculum/
- Size: 528 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# Vinculum
[](https://codecov.io/gh/cariad/vinculum)
**Vinculum** is a Python package for handling large numbers with high precision.
## Examples
Numbers are recorded as rational fractions rather than floating-point decimals, so `1.2 - 1.0` really does equal `0.2`.
Using native `float`:
```python
a = 1.2
b = 1.0
c = a - b
print(c) # 0.19999999999999996
```
Using Vinculum [`Rational`](https://cariad.github.io/vinculum/rational/):
```python
from vinculum import Rational
a = Rational.from_float(1.2)
b = Rational.from_float(1.0)
c = a - b
print(c) # 1/5
print(c.decimal()) # 0.2
```
A `Rational` can be rendered to any arbitrary number of decimal places, but repeating digits will be noted and rendered with overhead dots:
```python
from vinculum import Rational
print(Rational(1146408, 364913).decimal(max_dp=999))
# 3.141592653591403978482542414219279663919893234825835199074847977463121346731
# 96076873117702027606580198567877822933137487565529317947017508282796173334466
# 02340831924321687635134949974377454352133248198885761811719505745205021470871
# 13914823533280535360483183662955279751612028072444664892727855680669090988811
# 03167056257244877546154836906331098097354711945038954490522398489502977422015
# 65852682694231227717291518800371595421374409790826854620142335296358310062946
# 51053812826618947529959195753508370488308172084853101972250920082320991578814
# 67637491676098138460400150172780909422245850380775691740223012060408919386264
# 67130521521568154601233718721996749910252580752124478985401999928750140444434
# 70087390693124114514966581075489226199121434424095606350006713929073505191648
# 42030840227670705072167886592146621249448498683247787828879760381241556206547
# 86209315645098968795301893876074571199162540112300740176425613776434382989918
# 14487288751017365783077062203867771222181725507175682971009528298525950020963
print(Rational(1, 3).decimal())
# 0.̇3
```
Note that the latter output is `0.̇3` with a dot and not `0.3`.
Full documentation is online at **[cariad.github.io/vinculum](https://cariad.github.io/vinculum/)**.
## Installation
**Vinculum** requires Python 3.11 or later:
```console
pip install vinculum
```
## Support
Please raise bugs, feature requests and ask questions at [github.com/cariad/vinculum/issues](https://github.com/cariad/vinculum/issues).
## The Project
**Vinculum** is © 2022-2023 Cariad Eccleston and released under the [MIT License](https://github.com/cariad/vinculum/blob/main/LICENSE) at [github.com/cariad/vinculum](https://github.com/cariad/vinculum).
## The Author
Hello! 👋 I'm **Cariad Eccleston** and I'm a freelance backend and infrastructure engineer in the United Kingdom. You can find me at [cariad.earth](https://cariad.earth), [github/cariad](https://github.com/cariad), [linkedin/cariad](https://linkedin.com/in/cariad) and on the Fediverse at [@[email protected]](https://hachyderm.io/@cariad).