| commit | 311bbd2e50ea35e921a08186840d3b6ca279e880 | [log] [tgz] |
|---|---|---|
| author | Abseil Team <absl-team@google.com> | Thu Jun 10 13:29:59 2021 -0700 |
| committer | Andy Getz <durandal@google.com> | Thu Jun 10 17:13:58 2021 -0400 |
| tree | 99861ddf8b8e4e6ee519121807ebd9e50646bd42 | |
| parent | 8f92175783c9685045c50f227e7c10f1cddb4d58 [diff] |
Export of internal Abseil changes -- ca5ce10fa5286f2bfb51890a37b547308b8d6d93 by Benjamin Barenblat <bbaren@google.com>: Skip floating-point edge-case tests when using an x87 32-bit Intel CPUs use 80-bit floats for intermediate values, which can change the results of floating point computations from what we normally expect. Identify tests that are sensitive to the x87, and skip them when we’re on 32-bit Intel. PiperOrigin-RevId: 378722613 -- e5798bb017854e7f3b6d8721fed7dd553642b83d by Abseil Team <absl-team@google.com>: Build without -Wl,-no-undefined. PiperOrigin-RevId: 378690619 -- 3587685a2c932405e401546ec383abcfbf8495c8 by Derek Mauro <dmauro@google.com>: Update CCTZ BUILD file. PiperOrigin-RevId: 378688996 -- 06c7841b2bf8851410b716823b7ff9b42d86085e by Derek Mauro <dmauro@google.com>: Change the CMake install test to use installed version of GoogleTest PiperOrigin-RevId: 378537383 -- eaa8122a7062c56bed80e806344cca0c8325bf6f by Derek Mauro <dmauro@google.com>: Internal change PiperOrigin-RevId: 378525523 -- 381f505cce894b8eec031a541855650c4aa46e64 by Abseil Team <absl-team@google.com>: Mark btree_container::clear() with the ABSL_ATTRIBUTE_REINITIALIZES attribute. This prevents false positives in the clang-tidy check bugprone-use-after-move; it allows clear() to be called on a moved-from btree_container without any warnings, and the btree_container will thereafter be regarded as initialized again. PiperOrigin-RevId: 378472690 GitOrigin-RevId: ca5ce10fa5286f2bfb51890a37b547308b8d6d93 Change-Id: I4267246f418538c5baacb562d1a40213fb13f246
The repository contains the Abseil C++ library code. Abseil is an open-source collection of C++ code (compliant to C++11) designed to augment the C++ standard library.
Abseil is an open-source collection of C++ library code designed to augment the C++ standard library. The Abseil library code is collected from Google's own C++ code base, has been extensively tested and used in production, and is the same code we depend on in our daily coding lives.
In some cases, Abseil provides pieces missing from the C++ standard; in others, Abseil provides alternatives to the standard for special needs we've found through usage in the Google code base. We denote those cases clearly within the library code we provide you.
Abseil is not meant to be a competitor to the standard library; we've just found that many of these utilities serve a purpose within our code base, and we now want to provide those resources to the C++ community as a whole.
If you want to just get started, make sure you at least run through the Abseil Quickstart. The Quickstart contains information about setting up your development environment, downloading the Abseil code, running tests, and getting a simple binary working.
Bazel and CMake are the official build systems for Abseil.
See the quickstart for more information on building Abseil using the Bazel build system.
If you require CMake support, please check the CMake build instructions and CMake Quickstart.
Abseil is officially supported on many platforms. See the Abseil platform support guide for details on supported operating systems, compilers, CPUs, etc.
Abseil contains the following C++ library components:
base Abseil Fundamentals base library contains initialization code and other code which all other Abseil code depends on. Code within base may not depend on any other code (other than the C++ standard library).algorithm algorithm library contains additions to the C++ <algorithm> library and container-based versions of such algorithms.cleanup cleanup library contains the control-flow-construct-like type absl::Cleanup which is used for executing a callback on scope exit.container container library contains additional STL-style containers, including Abseil's unordered “Swiss table” containers.debugging debugging library contains code useful for enabling leak checks, and stacktrace and symbolization utilities.hash hash library contains the hashing framework and default hash functor implementations for hashable types in Abseil.memory memory library contains C++11-compatible versions of std::make_unique() and related memory management facilities.meta meta library contains C++11-compatible versions of type checks available within C++14 and C++17 versions of the C++ <type_traits> library.numeric numeric library contains C++11-compatible 128-bit integers.status status contains abstractions for error handling, specifically absl::Status and absl::StatusOr<T>.strings strings library contains a variety of strings routines and utilities, including a C++11-compatible version of the C++17 std::string_view type.synchronization synchronization library contains concurrency primitives (Abseil's absl::Mutex class, an alternative to std::mutex) and a variety of synchronization abstractions.time time library contains abstractions for computing with absolute points in time, durations of time, and formatting and parsing time within time zones.types types library contains non-container utility types, like a C++11-compatible version of the C++17 std::optional type.utility utility library contains utility and helper code.Abseil recommends users “live-at-head” (update to the latest commit from the master branch as often as possible). However, we realize this philosophy doesn't work for every project, so we also provide Long Term Support Releases to which we backport fixes for severe bugs. See our release management document for more details.
The Abseil C++ library is licensed under the terms of the Apache license. See LICENSE for more information.
For more information about Abseil: