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Convert decimals to approximate rational expressions

Project Description

You come across the number 0.866025. It looks vaguely familiar but you can’t quite point your finger at it? Then dedec is for you.

dedec is a small command-line utility that “de-decimalizes” decimal numbers into approximate rational expressions (with some basic functions).

$ dedec 0.4285714285
3 / 7   -7.1429e-11
sqrt(9 / 49)   -7.1429e-11
$ dedec 0.866025
sqrt(3 / 4)   -4.0378e-07
sin(1 / 3 * pi)   -4.0378e-07
cos(1 / 6 * pi)   -4.0378e-07

It can also be used from Python

import dedec

a = 3.0 / 7.0
sols = dedec.dedec(a)
numerator, denominator, mult_pi, fun, diff = sols[0]
assert numerator == 3
assert denominator == 7

Installation

Python Package Index

dedec is available from the Python Package Index, so simply type

pip install -U dedec

to install or upgrade.

Manual installation

Download dedec from GitHub and install it with

python setup.py install

Testing

To run the dedec unit tests, check out this repository and type

pytest

Distribution

To create a new release

  1. bump the __version__ number,

  2. publish to PyPi and GitHub:

    $ make publish
    

License

dedec is published under the MIT license.

Release History

Release History

This version
History Node

0.3.1

History Node

0.3.0

History Node

0.2.3

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0.2.2

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0.2.1

History Node

0.2.0

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
dedec-0.3.1-py2.py3-none-any.whl (6.1 kB) Copy SHA256 Checksum SHA256 py2.py3 Wheel Apr 7, 2017

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