multiprecision | Boost.Multiprecision | Math library

by boostorg C++ Version: Boost_1_82_0 License: BSL-1.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | multiprecision Summary

multiprecision is a C++ library typically used in Utilities, Math applications. multiprecision has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Boost.Multiprecision

Support

Quality

Security

License

Reuse

Support

multiprecision has a low active ecosystem.

It has 148 star(s) with 102 fork(s). There are 18 watchers for this library.

It had no major release in the last 12 months.

There are 34 open issues and 222 have been closed. On average issues are closed in 54 days. There are 13 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of multiprecision is Boost_1_82_0

Quality

multiprecision has no bugs reported.

Security

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

License

multiprecision is licensed under the BSL-1.0 License. This license is Permissive.

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

Reuse

multiprecision releases are available to install and integrate.

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

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multiprecision Key Features

No Key Features are available at this moment for multiprecision.

multiprecision Examples and Code Snippets

No Code Snippets are available at this moment for multiprecision.

Community Discussions

Trending Discussions on multiprecision

CGAL coordinate value transformation not working anymore in 5.2.1

Can C++ pattern of making structs to 'correspond' types be emulated in Haskell (template specialization)?

Installation of SCIP 7.0.2 with AMPL on Ubuntu Linux 20.04 for usage with Pyomo

How do I get binary equivalent string of a given uint512_t integer

Can I set up structs to 'using' a type when given a type? ('explicit specialization of non-template struct')

boost::multiprecision::cpp_int is being copied then deleted every time I try and print it

How to set rounding mode in Boost Multiprecision when using MPFR

big ints with boost : too large to be represented in any integer type

boost::multiprecision and rocksdb::Slice string interaction c++

type casting boost multiprecision integer returns wrong answer

QUESTION

CGAL coordinate value transformation not working anymore in 5.2.1

Asked 2021-Apr-17 at 21:46

In a project of mine I used to transform coordinate values from Kernel::FT to CGAL::Gmpq and back. The code does not compile anymore with the same kernel choice as before, namely

...

ANSWER

Answered 2021-Apr-17 at 21:46

If you look at CGAL/Exact_predicates_exact_constructions_kernel.h to see how Epeck is defined, you can define you own version of Epeck using Gmpq as

Source https://stackoverflow.com/questions/67141983

QUESTION

Can C++ pattern of making structs to 'correspond' types be emulated in Haskell (template specialization)?

Asked 2021-Apr-13 at 15:03

template 
struct Corresponding;

template <>
struct Corresponding {
    using CorrespondingT = boost::multiprecison::cpp_int;
};
template  using GetCorresponding = typename Corresponding::CorrespondingT;

...

ANSWER

Answered 2021-Apr-13 at 15:03

I'm not fluent in C++, so I'm not 100% sure what your example code is doing, but at a first glance type families and equalities seem similar.

Source https://stackoverflow.com/questions/67076386

QUESTION

Installation of SCIP 7.0.2 with AMPL on Ubuntu Linux 20.04 for usage with Pyomo

Asked 2021-Mar-23 at 21:09

I want to install the SCIP solver in version 7.0.2 on my Ubuntu Linux 20.04 machine to use in Pyomos SolverFactory following the instructions in this manual.

But when I use make I get the following error:

...

ANSWER

Answered 2021-Mar-20 at 20:53

did you try rebuilding with make BOOST=false?

Source https://stackoverflow.com/questions/66725348

QUESTION

How do I get binary equivalent string of a given uint512_t integer

Asked 2020-Dec-16 at 21:42

I'm using a boost/multiprecision uint512_t and I've tried using bitset library but it wont work for big integers like uint512_t. How can I convert it?

This is what I've tried with no success

...

ANSWER

Answered 2020-Dec-16 at 21:42

There are probably more elegant ways to do this, but I couldn't find any, so here goes.

You can use a bit mask to extract bit-by-bit and put it in a bitset<512>.

Source https://stackoverflow.com/questions/65330460

QUESTION

Can I set up structs to 'using' a type when given a type? ('explicit specialization of non-template struct')

Asked 2020-Dec-06 at 18:20

I have the following struct and there will be many of these with different 'input' and 'output' types.

...

ANSWER

Answered 2020-Dec-06 at 15:21

You simply forgot to declare the primary template.

Source https://stackoverflow.com/questions/65169577

QUESTION

boost::multiprecision::cpp_int is being copied then deleted every time I try and print it

Asked 2020-Dec-02 at 01:42

When I print a cpp_int from Boost, it seems that the entire object is copied.

...

ANSWER

Answered 2020-Dec-02 at 01:42

The way you mismatched malloc/new is invoking UB (as ubsan+asan will readily tell you).

Source https://stackoverflow.com/questions/65093449

QUESTION

How to set rounding mode in Boost Multiprecision when using MPFR

Asked 2020-Dec-02 at 01:09

I am trying to figure out how I can format mpfr_float numbers using a rounding mode in Boost Multiprecision. In the below example, I expect 1.55 to round to either 1.5 or 1.6 depending on which rounding mode is used, but instead for all cases it outputs 1.5. How can I achieve this simple functionality in Boost with MPFR?

...

ANSWER

Answered 2020-Dec-02 at 01:09

The docs say:

All conversions are performed by the underlying MPFR library

However the doc for mpfr float backend states:

Things you should know when using this type:

A default constructed mpfr_float_backend is set to zero (Note that this is not the default MPFR behavior).

All operations use round to nearest.

(emphasis mine)

I've found that that MPFR doesn't have a global default rounding override, so it's only specific operations (assignment and precision change) that take a mpfr_rnd_t.

You realized this, hence your:

Source https://stackoverflow.com/questions/62405147

QUESTION

big ints with boost : too large to be represented in any integer type

Asked 2020-Nov-11 at 20:34

I think i don't get something.

Is the class cpp_int from boost::multiprecision supposed to hold integers as big as one want ? Let's say i want to store the following ridiculously big integer. How am I supposed to do it ?

...

ANSWER

Answered 2020-Nov-11 at 20:34

As detailed in the documentation, you need to construct with a string:

Source https://stackoverflow.com/questions/64793676

QUESTION

boost::multiprecision and rocksdb::Slice string interaction c++

Asked 2020-Oct-23 at 19:48

Hi can someone explain what is happening here to me?

Version:
librocksdb-dev/bionic,now 5.8.8-1 amd64 [installed]
librocksdb5.8/bionic,now 5.8.8-1 amd64 [installed,automatic]
boost-cpp 1.74.0

...

ANSWER

Answered 2020-Oct-23 at 19:48

This snippet is undefined behavior:

Source https://stackoverflow.com/questions/64473795

QUESTION

type casting boost multiprecision integer returns wrong answer

Asked 2020-Oct-13 at 13:37

The issue I am facing is with boost multiprecision cpp_int type casting to a small integer type int16_t. Typecasting unsigned integer value of 43690 to int16_t is supposed to return -21846, however what I am getting is 32767. Am I missing anything here?

Here is the sample snippet of code to reproduce the behavior

...

ANSWER

Answered 2020-Oct-13 at 12:51

you basically try to convert int 128 & 64 to 16 for example :

Source https://stackoverflow.com/questions/64332731

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

Vulnerabilities

No vulnerabilities reported

Install multiprecision

You can download it from GitHub.

Support

Bugs and feature requests can be reported through the [Gitub issue tracker](https://github.com/boostorg/multiprecision/issues) (see [open issues](https://github.com/boostorg/multiprecision/issues) and [closed issues](https://github.com/boostorg/multiprecision/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aclosed)). You can submit your changes through a [pull request](https://github.com/boostorg/multiprecision/pulls). There is no mailing-list specific to Boost Multiprecision, although you can use the general-purpose Boost [mailing-list](http://lists.boost.org/mailman/listinfo.cgi/boost-users) using the tag [multiprecision].

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