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mirror of https://github.com/boostorg/uuid.git synced 2026-01-19 04:42:16 +00:00
Andrey Semashev d358c39a67 Use __builtin_memcpy/memcmp in cstring.hpp.
The builtins are sometimes more strongly optimized than the libc function
calls. They also don't need the <cstring> include.

Added unqualified memcpy function that simply calls either the builtin or
the libc function. This function is intended to be a drop-in replacement
for the libc memcpy calls, where constexpr friendliness is not important.
It is still marked as constexpr to allow mentioning them in other constexpr
functions. To avoid early checks whether its body can be evaluated in the
context of a constant expression, it is defined as a dummy template.

Marked all functions as noexcept.
2026-01-05 14:13:10 +03:00
2024-04-25 22:50:04 +03:00
2024-04-20 23:08:51 +03:00
2025-12-23 12:39:04 +02:00
2024-08-23 19:43:03 +03:00
2024-04-24 20:29:41 +03:00
2018-04-29 09:57:56 -04:00

Boost.Uuid

Boost.Uuid, part of Boost C++ Libraries, provides a C++ implementation of Universally Unique Identifiers (UUID) as described in RFC 4122 and RFC 9562.

See the documentation for more information.

License

Distributed under the Boost Software License, Version 1.0.

Properties

  • C++11 (since Boost 1.86.0)
  • Header-only

Current Status

Branch Github Actions Appveyor Dependencies Documentation Test Matrix
master Build Status Build status Deps Documentation Enter the Matrix
develop Build Status Build status Deps Documentation Enter the Matrix

More Information

  • Ask questions
  • Report bugs: Be sure to mention Boost version, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
  • Submit your patches as pull requests against the develop branch. Note that by submitting patches you agree to license your modifications under the Boost Software License, Version 1.0.
  • Discussions about the library are held on the Boost developers mailing list. Be sure to read the discussion policy before posting and add the [uuid] tag at the beginning of the subject line.

Code Example - UUID Generation

//  mkuuid.cpp example

#include <boost/uuid.hpp>
#include <iostream>

int main()
{
    boost::uuids::random_generator gen;
    std::cout << gen() << std::endl;
}
$ clang++ -Wall -Wextra -std=c++11 -O2 mkuuid.cpp -o mkuuid
$ ./mkuuid
2c186eb0-89cf-4a3c-9b97-86db1670d5f4
$ ./mkuuid
a9d3fbb9-0383-4389-a8a8-61f6629f90b6
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