biginteger | A statically allocated big integer library | GPU library

by blawar C++ Version: Current License: No License

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kandi X-RAY | biginteger Summary

biginteger is a C++ library typically used in Hardware, GPU applications. biginteger has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

A C++ template based statically allocated arbitary length big integer library designed for OpenCL. I created this library because existing arbitary length bigint libraries leveraged dynamic memory allocation, and thus could not be ported to GPU's / OpenCL. The use of static allocation does limit the size of integers that can be used, however the main purpose was to be able to do math operations on 512 bit to 4096 bit integers on the GPU for cryptopgraphy operations.

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Support

biginteger has a low active ecosystem.

It has 10 star(s) with 2 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 1 have been closed. On average issues are closed in 423 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of biginteger is current.

Quality

biginteger has no bugs reported.

Security

biginteger has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

biginteger does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

biginteger releases are not available. You will need to build from source code and install.

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Community Discussions

Trending Discussions on biginteger

Unable to make a migration. Getting errors related to foreign keys

Hash a hexadecimal number using SHA-256 in java

laravel eloquent update hasmany with array of ids

Fastest way to get the first 5 digits of a BigInteger

Radix Sort on an array of BigInteger

SQLAlchemy Many-To-One relation query filter for column in list

Immutable class while using a cache

How do I automatically store Date in JPA entity?

How to return int if BigInteger is too big for int?

SQLAlchemy join only one column

QUESTION

Unable to make a migration. Getting errors related to foreign keys

Asked 2021-Jun-15 at 18:27

First migration file:

...

ANSWER

Answered 2021-Jun-15 at 18:27

change the posts migration post_id and author_id to this :

Source https://stackoverflow.com/questions/67976654

QUESTION

Hash a hexadecimal number using SHA-256 in java

Asked 2021-Jun-12 at 08:25

I have written a code to hash a hexadecimal number using SHA-256 in Java. Please see my code.

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ANSWER

Answered 2021-Jun-12 at 08:25

Without using BigInteger:

Source https://stackoverflow.com/questions/67938522

QUESTION

laravel eloquent update hasmany with array of ids

Asked 2021-Jun-11 at 10:08

I need to update hasmany relation with set of id's.

Faq model.

...

ANSWER

Answered 2021-Jun-11 at 10:08

I bet, it's attach() you're looking for:

Source https://stackoverflow.com/questions/67934525

QUESTION

Fastest way to get the first 5 digits of a BigInteger

Asked 2021-Jun-10 at 15:11

Suppose n is a BigInteger and I want its first 5 digits. I'm thinking in 2 ways:

Dividing n by 10 log₁₀(n)-5 times (so only the first 5 digits would remain).
Get the Substring(0, 5) of n's string.

I have no idea which one is faster or if there is another option that may be better than these.

I would like to hear considerations about it before I test these options (what do you think of them, if there is something better, etc.).

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ANSWER

Answered 2021-Jun-10 at 15:11

If we want to find out first 5 leading digits, we can exploit integer division:

Source https://stackoverflow.com/questions/67914501

QUESTION

Radix Sort on an array of BigInteger

Asked 2021-Jun-08 at 20:27

I am trying to sort a randomized array of type BigInteger using the radix sort algorithm. The algorithm I am trying to use is written below.

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ANSWER

Answered 2021-Jun-08 at 20:27

I've modified your code and added a driver code also:

Source https://stackoverflow.com/questions/67892884

QUESTION

SQLAlchemy Many-To-One relation query filter for column in list

Asked 2021-Jun-07 at 06:18

I have following models defined:

...

ANSWER

Answered 2021-Jun-07 at 06:18

in_ will basically do any of the attributes is present, whereas what you want is ALL attributes are present.

To achieve this, just add filter for each attribute name separately:

Source https://stackoverflow.com/questions/67861765

QUESTION

Immutable class while using a cache

Asked 2021-Jun-07 at 03:44

While going through JCIP, I came across the below code snippet which was considered as Immutable. However the explanation provided makes me confused.

OneValueCache wouldn't be immutable without the copyOf calls in the constructor and getter. Arrays.copyOf was added as a convenience in Java 6; clone would also work.

Aren't the state vars of OneValueCache themselves Immutable with final and BigInteger being itself immutable? Why do we need to have Arrays.copyOf if the state of OneValueCache is already Immutable?

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ANSWER

Answered 2021-Jun-07 at 03:44

The final applies to lastFactors, but not to the elements of lastFactors. If the methods returned lastFactors directly without copying it, the caller could modify the elements of lastFactors without any problems, changing the internal state of OneValueCache. With the copy operations, the returned arrays are copies of the final variable, and any modifications will modify the copy of the array, not the immutable instance.

Source https://stackoverflow.com/questions/67865652

QUESTION

How do I automatically store Date in JPA entity?

Asked 2021-Jun-05 at 07:12

I have a JPA entity in Spring where I have a created_at field of type Date. I want to automatically initialize it to current date. How can I achieve this? Here's my code:

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ANSWER

Answered 2021-Jun-05 at 05:25

You can use CreatedDate annotation as shown in below example:

Source https://stackoverflow.com/questions/67846431

QUESTION

How to return int if BigInteger is too big for int?

Asked 2021-May-31 at 01:26

i'm currently trying to solve a HackerRank problem, the problem in question is called Fibonacci Modified.

The method returns an int but it is expected that I will be obtaining huge values. I'm solving this problem in Java.

Here is my code

...

ANSWER

Answered 2021-May-31 at 01:26

You cannot, the maximum value for int is 2,147,483,647 (32 bits of value). If you need big numbers you must use the appropriate variable type.

If for some reason you want to avoid BigInteger at all and your are not going to do any arithmetic operation later, you can always return a String

About the hackerrank problem, just modify the result variable type to BigInteger. Actually, they seem to be aware of the 32/64 bits issue... they are using a String value to prevent it.

There's no reason to keep the whole code-template structure. They just care about input/output. You are allowed to modify EVERYTHING but those two things.

This is their input:

This is their output (here you can see their output is expected to be a String):

Source https://stackoverflow.com/questions/67754737

QUESTION

SQLAlchemy join only one column

Asked 2021-May-30 at 08:16

I have following models defined:

...

ANSWER

Answered 2021-May-30 at 08:16

db.query(models.Data).all() returns an array of Data objects. So you can define a custom property on the Data class to extract names from attributes relationship:

Source https://stackoverflow.com/questions/67755648

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

Vulnerabilities

No vulnerabilities reported

Install biginteger

You can download it from GitHub.

Support

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