javascript-bignum | Scheme arithmetic library for JavaScript | Math library

by jtobey JavaScript Version: v1.3.1 License: MIT

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | javascript-bignum Summary

javascript-bignum is a JavaScript library typically used in Utilities, Math applications. javascript-bignum has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

scheme arithmetic library for javascript, copyright (c) 2010, 2011, 2012 john tobey jtobey@john-edwin-tobey.org copyright (c) 2009 matthew crumley email@matthewcrumley.com licensed under the mit license, file license. big integer implementation based on javascript-biginteger, the scheme language supports "exact" arithmetic and mixing exact with inexact numbers. several basic operations, including add, subtract, multiply, and divide, when given only exact arguments, must return an exact, numerically correct result. they are allowed to fail due to running out of memory, but they are not allowed to return approximations the way ecmascript operators may. for example, adding exact 1/100 to exact 0 one hundred times produces exactly 1, not 1.0000000000000007 as in javascript. raising 2 to the 1024th power returns a 308-digit integer with complete precision, not infinity as in ecmascript. this implementation provides all functions listed in the r6rs (i recommend the pdf) scheme specification, section 11.7, along with eqv? from section 11.5. (eqv? uses javascript's === to compare non-numbers.). exact numbers support the standard ecma number formatting methods (tofixed, toexponential, and toprecision) without a fixed upper limit to precision. this release contains a plugin api designed to support alternative implementations of four broad types: exact integer, exact rational, inexact real, and

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Support

javascript-bignum has a low active ecosystem.

It has 404 star(s) with 56 fork(s). There are 22 watchers for this library.

It had no major release in the last 6 months.

There are 4 open issues and 6 have been closed. On average issues are closed in 38 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of javascript-bignum is v1.3.1

Quality

javascript-bignum has 0 bugs and 0 code smells.

Security

javascript-bignum has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

javascript-bignum code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

javascript-bignum is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

javascript-bignum releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

javascript-bignum saves you 296 person hours of effort in developing the same functionality from scratch.

It has 713 lines of code, 0 functions and 14 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed javascript-bignum and discovered the below as its top functions. This is intended to give you an instant insight into javascript-bignum implemented functionality, and help decide if they suit your requirements.

Creates a new BigIntIntInt .
Injects the baseBank implementation .
Creates a new BigInteger .
eslint - disable - line numbers .
Implementation of rrns .
Creates a BigNumber .
Implementation of helpers
Uses a native library for ES5 language .
Creates a context .
Creates a new BigNumberFactory .

Get all kandi verified functions for this library.

javascript-bignum Key Features

No Key Features are available at this moment for javascript-bignum.

javascript-bignum Examples and Code Snippets

No Code Snippets are available at this moment for javascript-bignum.

Community Discussions

Trending Discussions on javascript-bignum

Byte Array to Uint64 as a String

QUESTION

Byte Array to Uint64 as a String

Asked 2017-Aug-12 at 14:13

Let's think about the following situation.

The Go routine creates a byte array where packs a Uint64 number 5577006791947779410 in 8 bytes Big Endian [77, 101, 130, 33, 7, 252, 253, 82].

In JavaScript code I receive these bytes as Uint8Array. We know that JavaScript doesn't currently support Uint64 as safe numeric type and cannot perform bitwise operations on integers larger than 32 bits, so things like buf[0] << 56 will never work.

So what is the process of decoding these bytes directly to numeric string "5577006791947779410"?

P.S. I know there are plenty of libraries for working with big integers in JavaScript, but generally they are huge and provide lots of mathematical operations, which I don't need here. I am looking for a simple modern straightforward solution for just decoding BE-packed Uint64 and Int64 bytes to numeric string. Do you have anything in mind?

...

ANSWER

Answered 2017-Aug-12 at 14:13

EDIT: For converting (U)int64 I would now definitely recommend @LS_DEV's solution. I would use my solution only when having an unknown or larger amount of bytes.

I started with https://stackoverflow.com/a/21668344/3872370 and modified it:

Source https://stackoverflow.com/questions/45455979

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install javascript-bignum

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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