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| Name: libdeflate0 | Distribution: SUSE Linux Enterprise 15 SP5 |
| Version: 1.17 | Vendor: openSUSE |
| Release: bp155.1.5 | Build date: Mon May 22 12:57:00 2023 |
| Group: Unspecified | Build host: sheep87 |
| Size: 71616 | Source RPM: libdeflate-1.17-bp155.1.5.src.rpm |
| Packager: https://bugs.opensuse.org | |
| Url: https://github.com/ebiggers/libdeflate | |
| Summary: Library for DEFLATE/zlib/gzip compression and decompression | |
libdeflate is a library for whole-buffer DEFLATE-based compression and decompression. It supports raw, zlib-wrapped and gzip-wrapped DEFLATE. It is significantly faster than the zlib library: - decompression speedup over gzip-1.10 is 2.28x (generic), 2.87x (AVX2) - compression speedup over gzip is 1.72x (generic), 2.23x (AVX2) In addition, libdeflate provides optional high compression modes above zlib's "level 9".
BSD-2-Clause
* Tue Jan 24 2023 Paolo Stivanin <info@paolostivanin.com>
- update to 1.17:
* Improved the compression ratio at levels 10-12 slightly, mainly
levels 11-12. Some inputs (such as certain PNG files) see much
improved compression ratios. As a trade-off, compressing at
levels 11-12 is now about 5-20% slower.
* For consistency with zlib, the decompressor now returns an error
on some invalid inputs that were accepted before.
* Fixed a build error on arm64 with gcc with certain target CPUs.
* Fixed a build error in programs/gzip.c with uClibc.
* Thu Dec 29 2022 Dirk Müller <dmueller@suse.com>
- update to 1.15:
* libdeflate now uses CMake instead of a plain Makefile.
* Mon Oct 03 2022 Dirk Müller <dmueller@suse.com>
- update to 1.14:
Significantly improved decompression performance on all platforms. Examples
include (measuring DEFLATE only):
| Platform | Speedup over v1.13 |
|------------------------------------|--------------------|
| x86_64 (Intel Comet Lake), gcc | 1.287x |
* Mon Aug 08 2022 Dirk Müller <dmueller@suse.com>
- update to 1.13:
* Changed the 32-bit Windows build of the library to use the default calling
convention (cdecl) instead of stdcall, reverting a change from libdeflate 1.4.
* Fixed a couple macOS compatibility issues with the gzip program.
* Tue Jul 12 2022 Dirk Müller <dmueller@suse.com>
- update to 1.12:
* Improved CRC-32 performance on short inputs on x86 and ARM.
* Improved CRC-32 performance on Apple Silicon Macs by using a 12-way pmull
implementation. Performance on large inputs on M1 is now about 67 GB/s,
compared to 8 GB/s before, or 31 GB/s with the Apple-provided zlib.
* Improved CRC-32 performance on some other ARM CPUs by reworking the code so
that multiple crc32 instructions can be issued in parallel.
* Improved CRC-32 performance on some x86 CPUs by increasing the stride length
of the pclmul implementation.
* Improved Adler-32 performance on some x86 CPUs by optimizing the AVX-2
implementation. E.g., performance on Zen 1 improved from 19 to 30 GB/s, and
on Ice Lake from 35 to 41 GB/s (if the AVX-512 implementation is excluded).
* Removed the AVX-512 implementation of Adler-32 to avoid CPU frequency
downclocking, and because the AVX-2 implementation was made faster.
* Improved Adler-32 performance on some ARM CPUs by optimizing the NEON
* Improved compression performance slightly.
* Detect arm64 CPU features on Apple platforms, which should improve
performance in some areas such as CRC-32 computation.
* The included `gzip` and `gunzip` programs now support the `-q` option.
* The included `gunzip` program now passes through non-gzip data when both
the `-f` and `-c` options are used.
* Mon Feb 14 2022 Dirk Müller <dmueller@suse.com>
- update to 1.10:
* Added an additional check to the decompressor to make it quickly detect
certain bad inputs and not try to generate an unbounded amount of output.
* Cleaned up a few things in the compression code.
* Mon Jan 24 2022 Dirk Müller <dmueller@suse.com>
- update to 1.9:
* Heuristics were implemented which significantly improve the compression
ratio on data where short matches aren't useful, such as DNA sequencing
data. This applies to all compression levels, but primarily to levels 1-9.
* Levels 1 was made much faster, though it often compresses slightly worse
than before (but still better than zlib).
* Levels 8-9 were also made faster, though they often compress slightly worse
than before (but still better than zlib). On some data, levels 8-9 are much
faster and compress much better than before; this change addressed an issue
where levels 8-9 did poorly on certain files. The algorithm used by levels
8-9 is now more similar to that of levels 6-7 than to that of levels 10-12.
* Levels 2-3, 7, and 10-12 were strengthened slightly.
* Levels 4-6 were also strengthened slightly, but some of this improvement was
traded off to speed them up slightly as well.
* Levels 1-9 had their per-compressor memory usage greatly reduced.
* `make install` will now install a pkg-config file for libdeflate.
* The Makefile now supports the `DISABLE_SHARED` parameter to disable building
the shared library.
* Tue Jan 04 2022 Dirk Müller <dmueller@suse.com>
- update to 1.8:
* Added `-t` (test) option to `libdeflate-gunzip`.
* Unaligned access optimizations are now enabled on WebAssembly builds.
* Fixed a build error when building with the Intel C Compiler (ICC).
* Fixed a build error when building with uClibc.
* libdeflate's CI system has switched from Travis CI to GitHub Actions.
* Made some improvements to test scripts.
* Wed Jan 13 2021 andy great <andythe_great@pm.me>
- Add workaround build fail due issue in dwz by deleting
libdeflate-gunzip and replace with symlink libdeflate-gzip to
fix dwz break with hardlink.
boo#1180984
* Wed Jan 13 2021 Jan Engelhardt <jengelh@inai.de>
- Quantify the description's supposed "fast" claims
- Adhere to shared library packaging guide and split tools off
into subpackage.
* Wed Jan 13 2021 andy great <andythe_great@pm.me>
- Initial package release.
/usr/lib64/libdeflate.so.0
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