https://github.com/ess/bashbignum

Because somebody wanted to be a jerk, a pure Bash implementation of Bignum
https://github.com/ess/bashbignum

Last synced: over 1 year ago
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Because somebody wanted to be a jerk, a pure Bash implementation of Bignum

• Host: GitHub
• URL: https://github.com/ess/bashbignum
• Owner: ess
• License: gpl-3.0
• Created: 2010-06-12T05:43:01.000Z (almost 16 years ago)
• Default Branch: master
• Last Pushed: 2010-06-12T21:27:51.000Z (almost 16 years ago)
• Last Synced: 2025-01-03T20:10:43.622Z (over 1 year ago)
• Language: Shell
• Homepage:
• Size: 109 KB
• Stars: 4
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • License: COPYING

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README

          
Bash Bignum

A Bignum solution implemented in pure Bash

http://github.com/ess/bashbignum

PURPOSE

=======

Aside from giving me the ability to claim to be a Big Jerk (TM), I guess there

are situations in which it would be somewhat awesome to be able to handle

ridiculously large integers (and their calculations) in a pure Bash environment.

Remember ... we can't always guarantee that bc will exist on a given system.

If you can believe this, I actually have a project in mind for which this

capability is an absolute requirement.

FEATURES

========

* Integers so large that they can fill up the entirety of your memory, if you

  so choose.

* Addition!

* Subtraction!

* Multiplication!

* Division!

* Modulo Division!

* Negation!

* Intuitive Comparisons!

* While the arithmetic operations are about as well-optimized as I could figure,

  Bash Bignum caluculations are Awesomely Slow.

BASICS

======

source /path/to/bignum.sh

a="$( bn_create '100000000000000000000000000000000000')"

b="$( bn_create '10000000000000000000000000000000000')"

echo "$( bn_to_string "$( bn_add "${a}" "${b}" )" )"

echo "Read through the source until I've had time to document this crap."