--
a0847bf19789c97689f1a8b0133a53b8af5e5caa by Samuel Benzaquen <sbenza@google.com>:
Add support for absl::(u)int128 to random distributions and generators.
PiperOrigin-RevId: 411565479
GitOrigin-RevId: a0847bf19789c97689f1a8b0133a53b8af5e5caa
Change-Id: Ide434bdd93fcab8e90f791796498de14833b667c
--
e1c30aa6d6bb25987916d3ec39245c6d4a2a93ea by Derek Mauro <dmauro@google.com>:
Only build the non-stub implementation of RandenHwAes when
accelerated AES can be detected by compiler-set flags.
This removes the case where the full RandenHwAes is built when
only ABSL_RANDOM_INTERNAL_AES_DISPATCH is true.
This also removes the case where ARM crypto is enabled through
the crypto directive. This directive doesn't appear to reliably
work when used with arm_neon.h. As far as I can tell, the crypto
directive is only meant to work with crypto instructions in
handwritten asm. For this to work with arm_neon.h, it appears
several hacks are needed, including overriding some compiler-set
defines.
PiperOrigin-RevId: 392948948
GitOrigin-RevId: e1c30aa6d6bb25987916d3ec39245c6d4a2a93ea
Change-Id: Ie97e26f0204c8a86f72d2f38a59181f1ef578418
--
c3b926ea986eea9d416ef57ee67a1041b70257fd by Martijn Vels <mvels@google.com>:
Remove internal absl_internal_cordz_disabled check.
PiperOrigin-RevId: 384225993
--
2863c56ad5c86dd9c207a796e65d5bc968f77755 by Benjamin Barenblat <bbaren@google.com>:
Make randen_slow endian-correct
Pay attention to the platform endianness when pulling bytes out of each
AES block, and use platform-endian round keys.
PiperOrigin-RevId: 383878281
GitOrigin-RevId: c3b926ea986eea9d416ef57ee67a1041b70257fd
Change-Id: I0d48f4fd560b3e320260ef05790727756ffead02
--
007ce045d5d38a727ededdb5bf06e64785fd73bd by Martijn Vels <mvels@google.com>:
Add `cord_enable_btree` feature flag (default false).
PiperOrigin-RevId: 383729939
--
98e7dc6a0407b0fd7b8713d883cdb3a766e0583d by Benjamin Barenblat <bbaren@google.com>:
Eliminate some byte swapping from randen_slow
Stop swapping bytes when serializing randen_slow’s Vector128 into and
out of memory. Instead, simply index different bytes in the AES round
function. This requires byte swapping the te{0..3} lookup tables, but it
produces an 8% speedup on my Xeon W-2135.
PiperOrigin-RevId: 383689402
--
180b6bf45049188840d439b16a28e6b968669340 by Evan Brown <ezb@google.com>:
Minor simplification in drop_deletes_without_resize() - save probe_offset outside the lambda.
Also, add some consts, avoid an auto, and use lambda capture by value instead of reference.
I realized that the compiler can already optimize this - https://godbolt.org/z/Wxd9c4TfK, but I think this way makes the code a bit clearer.
PiperOrigin-RevId: 383646658
--
781706a974c4dc1c0abbb6b801fca0550229e883 by Martijn Vels <mvels@google.com>:
Change storage to contain 3 bytes.
As per the comments in the code, this allows us to utilize all available space in CordRep that may otherwise be 'lost' in padding in derived clases. For the upcoming CordrepBtree class, we want a strong guarantee on having a 64 bytes aligned implementation.
PiperOrigin-RevId: 383633963
--
8fe22ecf92492fa6649938a2215934ebfe01c714 by Derek Mauro <dmauro@google.com>:
Remove reference to str_format_arg.h, which no longer exists
PiperOrigin-RevId: 383517865
--
79397f3b18f18c1e2d7aea993b687329d626ce64 by Benjamin Barenblat <bbaren@google.com>:
Use absl::uint128 for AES random number generator
Replace randen’s internal 128-bit integer struct, u64x2, with
absl::uint128. This eliminates some code and improves support for
big-endian platforms.
PiperOrigin-RevId: 383475671
GitOrigin-RevId: 007ce045d5d38a727ededdb5bf06e64785fd73bd
Change-Id: Ia9d9c40de557221f1744fb0d6d4d6ca7ac569070
--
b2a781121ff72fb485b7e67539d5e4ff1eb66df2 by Gennadiy Rozental <rogeeff@google.com>:
Consistently use absl::flat_hash_map instead of std::map in Flags implementation.
PiperOrigin-RevId: 377132816
--
9ab83a154d8f22d51fed0092bf94245b5af1f498 by Derek Mauro <dmauro@google.com>:
Workaround for MSAN being unable to see through getentropy().
https://github.com/google/sanitizers/issues/1173
PiperOrigin-RevId: 377097059
--
8d28e921442d1b246c26f3200f21027557c47657 by Greg Falcon <gfalcon@google.com>:
Disable stack_consumption_test in tsan builds.
A recent tsan change broke the way this test-only utility was counting stack usage.
PiperOrigin-RevId: 377053169
GitOrigin-RevId: b2a781121ff72fb485b7e67539d5e4ff1eb66df2
Change-Id: Ib56356f8128f6c083f32b950091f3a56d9e2cd51
--
912c205cf80c4ed24a08000c04263403857b7f75 by Abseil Team <absl-team@google.com>:
Internal change
PiperOrigin-RevId: 373620391
--
d454f10549d27d7b025d1ce0ef90a0cdec42c361 by Martijn Vels <mvels@google.com>:
Add SetCordRepForTesting() helper to CordzInfo
PiperOrigin-RevId: 373602832
--
7a2d7bdd2e60fb51333e81cd71ebd0a4edb60704 by Evan Brown <ezb@google.com>:
For StrAppend, make sure to follow exponential growth like std::string::append.
PiperOrigin-RevId: 373589332
--
24397f19bce45133a42feaa7c883009ef9325095 by Greg Falcon <gfalcon@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 373569246
GitOrigin-RevId: 912c205cf80c4ed24a08000c04263403857b7f75
Change-Id: I5444f7ca2c0980685ca5c51596c259b845d69673
--
2247e59ee5696e61c7cb24dce479db572980032d by Derek Mauro <dmauro@google.com>:
Ensure ThreadIdentity::WaiterState data has the correct alignment
PiperOrigin-RevId: 357969866
--
79bb81a2e6723b186536ad4b4f25cd7ee83f3e72 by Laramie Leavitt <lar@google.com>:
Rework absl::MockingBitGen internal mock registry.
Use a virtual base class with template-specialized derived classes to implement match method rather than taking the address of a function specialization and using casts everywhere.
This combines several of the previously type-erased pointers into a single object, eliminates the separate cleanup container previously used, and eliminates some gratuitous static_cast<>s.
PiperOrigin-RevId: 357827438
--
a2eb53d002c9b376360a70b2b0f6a18a1de1e16f by Todd Lipcon <tlipcon@google.com>:
Reduce runtime of sequence_lock_test
PiperOrigin-RevId: 357785571
--
dd1175ff13b560f01c4aaa64bc6759a5300e391c by Abseil Team <absl-team@google.com>:
Don't assume that compiling for Windows means that MSVC or clang-cl is being used.
PiperOrigin-RevId: 357760052
--
251a9cbede52e729b3a25911b6e225b779c285a8 by Andy Getzendanner <durandal@google.com>:
Internal change.
PiperOrigin-RevId: 357702979
GitOrigin-RevId: 2247e59ee5696e61c7cb24dce479db572980032d
Change-Id: Icd366d3775d88d623695209b5f328dbd69f01d27
--
756156bf03da050e8b27539a8247d9af7e44c6a2 by Abseil Team <absl-team@google.com>:
Fix a typo in cord.h: "accomodate" => "accommodate"
PiperOrigin-RevId: 356168875
--
638befdb342b608ec28910ee931ee200fdbe1fef by Samuel Benzaquen <sbenza@google.com>:
Fix float conversion for PPC.
In PPC `long double` is a double-double representation which behaves weirdly
wrt numeric_limits. Don't take `long double` into account when we are not
handling `long double` natively anyway.
Fix the convert test to always run the conversion even if we are not going to
compare against libc's printf result. This allows exercising the code itself to
make sure we don't trigger assertions or UB found by sanitizers.
PiperOrigin-RevId: 355857729
--
ff5f893319fa76b273c7785b76ef6c95b1791076 by Abseil Team <absl-team@google.com>:
Example usage tweak
PiperOrigin-RevId: 355695750
--
0efc454f90023fa651b226e5e3ba7395a3b60c6d by Benjamin Barenblat <bbaren@google.com>:
Remove endian-sensitivity from Abseil’s RNG
Ensure that the Abseil random number generator produces identical output
on both big- and little-endian platforms by byte-swapping appropriately
on big-endian systems.
PiperOrigin-RevId: 355635051
GitOrigin-RevId: 756156bf03da050e8b27539a8247d9af7e44c6a2
Change-Id: Iaaa69767b8e85d626742b9ba56fefb75f07c69ee
--
dab5caab05d89d03066ef92584660688595a3aaf by Mark Barolak <mbar@google.com>:
Add absl::Status and absl::StatusOr to absl/README.md
Import of https://github.com/abseil/abseil-cpp/pull/863
PiperOrigin-RevId: 347857368
--
1ca3c7a96417cd6e6d62f4dc36fd5ddaa61cfa20 by Chris Kennelly <ckennelly@google.com>:
Leverage integer power-of-2 functions and bit counting library in Abseil.
PiperOrigin-RevId: 347816486
--
e5cbe05879fd65dce7875e2e0105331a1615d89b by Chris Kennelly <ckennelly@google.com>:
Mitigate narrowing warning on MSVC.
If sizeof(x) <= sizeof(uint32_t), no truncation occurs when casting to
uint32_t, but the compiler cannot always determine this.
PiperOrigin-RevId: 347696526
--
079dff64cb175d282d9e22dfb4a522199ffdae2e by Benjamin Barenblat <bbaren@google.com>:
Avoid libgcc -NaN narrowing bug
When testing -NaN parsing, avoid narrowing -NaN from double to float.
This avoids a bug in libgcc
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98251).
PiperOrigin-RevId: 347654751
--
2e78a7634865aeef6765e1f447e96cf8d9985059 by Chris Kennelly <ckennelly@google.com>:
Mark popcount helpers as inline.
These are conditionally constexpr, so we need to add inline to cover the
non-constexpr builds to avoid ODR violations.
PiperOrigin-RevId: 347620138
--
437fbb363aea1654179f102dcdd607ec33c1af1e by Chris Kennelly <ckennelly@google.com>:
Use explicit narrowing cast.
This is never invoked in practice, but compilers with -Wimplicit-int-conversion
may trigger when sizeof(T) > sizeof(uint16_t) prior to determining this never
runs.
PiperOrigin-RevId: 347609857
GitOrigin-RevId: dab5caab05d89d03066ef92584660688595a3aaf
Change-Id: I6296ddffe7ec646f8ce121138f21e1e85a2cff4b
--
9f746b79e16d36dba908ed9e2a586d890fe54acc by Derek Mauro <dmauro@google.com>:
Remove the Bazel mirror URL that we use in our WORKSPACE file
This doesn't appear to be supported. We use --distdir caching in our tests.
PiperOrigin-RevId: 327634738
--
e1f6f54830c415fc8bb8dc14483fae4cf9713d75 by Abseil Team <absl-team@google.com>:
Removing comments following license() rules as they are rarely useful, redundant with LICENSE files, and tend to fall out of date.
PiperOrigin-RevId: 327504063
--
b59c076638a57a74a3f8475f1dee8b536e32a15f by Gennadiy Rozental <rogeeff@google.com>:
Change GetAllFlags API to return a collection of mutable flag handles.
This will make this interface on par with FindCommandLineFlag and allow to call
CommandLineFlag::ParseFrom on the handle returned by GetAllFlags.
PiperOrigin-RevId: 327499084
--
bbf56b3c4a1d908d95e5a52aba38b1984151efff by Gennadiy Rozental <rogeeff@google.com>:
Make raw_hash_set compile when AllocTraits::propagate_on_container_swap is false.
PiperOrigin-RevId: 327371107
--
837f62c85ea65c1d6b847a75816198c625fe62ff by Abseil Team <absl-team@google.com>:
On macOS, `mem_alloc` is defined like this:
rpc/types.h:86:#define mem_alloc(bsize) calloc(1, bsize)
So if that file is included before container_memory.h, the variable mem_alloc
may never get defined. This is fixed by using a different name.
PiperOrigin-RevId: 327360224
--
aa8f5528382c0d01239ce75b645723aaf7e1ef46 by Gennadiy Rozental <rogeeff@google.com>:
Release of absl::GetAllFlags API.
PiperOrigin-RevId: 327275943
GitOrigin-RevId: 9f746b79e16d36dba908ed9e2a586d890fe54acc
Change-Id: I99c5c87dd1712bf8df9a52397b0c1e400a3c3447
--
790f9061df340cd900e8da70e66c363f7af3c2eb by Abseil Team <absl-team@google.com>:
Add support for rvalue reference to function types.
PiperOrigin-RevId: 324508531
--
51fe201dbb41a3ebc3d49ff65250b5f464279d43 by Abseil Team <absl-team@google.com>:
Cleaning up function comment style; no substantive change.
PiperOrigin-RevId: 324497401
--
da8595d5266577d0c170528d12f6de17b8affcc2 by Abseil Team <absl-team@google.com>:
Add support for demangling GNU vector types.
PiperOrigin-RevId: 324494559
--
0cb0acf88c1750f6963c9cb85249f9b4f0bd5104 by Abseil Team <absl-team@google.com>:
Add support for thread-local types.
PiperOrigin-RevId: 324491183
--
c676bc8380560599cd26f7f231e04e6be532e904 by Abseil Team <absl-team@google.com>:
Add support for demangling "Du" (char8_t).
PiperOrigin-RevId: 324441607
--
b218bf6467bc62b327214782c881e8224ad91509 by Abseil Team <absl-team@google.com>:
Update doc comments in header of `any.h` to reflect that `absl::variant` has been released.
PiperOrigin-RevId: 324431690
--
e5b579f3f1aa598c1f62e71dba7103b98811de59 by Laramie Leavitt <lar@google.com>:
Bugfix: Fix bounds in absl::Uniform where one of the bounds is min/max.
When absl::Uniform(rng, tag, a, b) is called, the tag is used in conjunction with the type to determine whether or not to manipulate the bounds to make them inclusive or exclusive through the uniform_*_bound functions. Unfortunately, at limits of the interval the function was not well behaved.
The previous implementation used wrapping arithmetic. This causes incorrect bounds computation at the extremes (numeric_limits::min / numeric_limits::max) the bound would wrap.
Improve this situation by:
1/ Changing the uniform_*_bound functions to use saturating arithmetic instead of wrapping, thus in the unsigned case, the upper_bound of IntervalOpenOpen for 0 is now 0, rather than numeric_limits::max, likewise for the lower bound.
2/ Adjusting the hi/lo checks in the distributions. When the interval is empty, such as for absl::Uniform(absl::IntervalOpenOpen, gen, 1, 0), the return value is somewhat nonsensical. Now absl::Uniform more consistently returns the low input rather than any adjusted input. In the above case, that means that 1 is returned rather than 2.
NOTE: Calls to absl::Uniform where the resolved upper bound is < the lower bound are still ill-formed and should be avoided.
3/ Adding better tests.
The underlying uniform_*_distribution classes are not affected.
PiperOrigin-RevId: 324240873
GitOrigin-RevId: 790f9061df340cd900e8da70e66c363f7af3c2eb
Change-Id: I2a2208650ea3135c575e200b868ce1d275069fc8
--
4833151c207fac9f57a735efe6d5db4c83368415 by Gennadiy Rozental <rogeeff@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 320398694
--
a1becb36b223230f0a45f204a5fb33b83d2deffe by Gennadiy Rozental <rogeeff@google.com>:
Update CMakeLists.txt
Import of https://github.com/abseil/abseil-cpp/pull/737
PiperOrigin-RevId: 320391906
--
b529c45856fe7a3447f1f3259286d57e13b1f292 by Abseil Team <absl-team@google.com>:
Improves a comment about use of absl::Condition.
PiperOrigin-RevId: 320384329
--
c7b1dacda2739c10dc1ccbfb56b07ed7fe2464a4 by Laramie Leavitt <lar@google.com>:
Improve FastUniformBits performance for std::minstd_rand.
The rejection algorithm was too pessimistic before, and not in line with the [rand.adapt.ibits]. Specifically, when sampling from an URBG with a non power of 2 range, FastUniformBits constructed a rejection threshold with a power-of-2 range that was too restrictive.
For example, minstd_rand has a range of
[1, 2147483646], which has a range of 2145386495, or about 30.999 bits.
Before FastUniformBits rejected values between 1<<30 and 2145386495, which includes approximately 50% of the generated values. However, since a minimum of 3 calls are required to generate a full 64-bit value from an entropy pool of 30.9 bits, the correct value for rejection sampling is the range value which masks 21 (0x7fe00000) or 22 bits and rejects values greater than that. This reduces the probability of rejecting a sample to about 0.1%
NOTE: Abseil random does not guarantee sequence stability over time, and this is expected to change sequences in some cases.
PiperOrigin-RevId: 320285836
--
15800a39557a07dd52e0add66a0ab67aed00590b by Gennadiy Rozental <rogeeff@google.com>:
Internal change.
PiperOrigin-RevId: 320220913
--
ef39348360873f6d19669755fe0b5d09a945a501 by Gennadiy Rozental <rogeeff@google.com>:
Internal change
PiperOrigin-RevId: 320181729
--
4f9f6ef8034a24da1832e4c838c72f80fc2ea062 by Gennadiy Rozental <rogeeff@google.com>:
Internal change
PiperOrigin-RevId: 320176084
--
6bfc8008462801657d231585bd5c37fc18bb25b6 by Gennadiy Rozental <rogeeff@google.com>:
Internal change
PiperOrigin-RevId: 320176070
--
b35b055ab1f41e6056031ff0641cabab23530027 by Abseil Team <absl-team@google.com>:
Disabling using header module as well as building one for randen_hwaes_impl
PiperOrigin-RevId: 320024299
GitOrigin-RevId: 4833151c207fac9f57a735efe6d5db4c83368415
Change-Id: I9cf102dbf46ed07752a508b7cda3ab3858857d0d
--
e21e960918678629abf89ad1b694b7d4a456b434 by Greg Falcon <gfalcon@google.com>:
Roll back invoke() change due to large increases in compiler memory usage.
PiperOrigin-RevId: 315919455
--
f95872e1e1d7afdefbac94f42ea228d42d80eb6e by Greg Falcon <gfalcon@google.com>:
Rollback of invoke() changes due to compiler memory usage growth
PiperOrigin-RevId: 315911585
--
6c6c6ba6892016a2ce4703042800254fb9b15727 by Laramie Leavitt <lar@google.com>:
Move some of the common mocking code into MockHelpers.
Use MockHelpers to do mock signature detection and improve the dispatch mechansim.
PiperOrigin-RevId: 315825988
--
5e9380367d280c7fa6dbd4d0f48c31ade7f1d419 by Greg Falcon <gfalcon@google.com>:
Rename the internal implementation details Invoke and InvokeT to `invoke` and `invoke_result_t`, since these are re-implementations of C++17 library entites of the same names.
PiperOrigin-RevId: 315790467
GitOrigin-RevId: e21e960918678629abf89ad1b694b7d4a456b434
Change-Id: Ia75011f94cb033c1c9a4cb64cf14d283b91426ac
--
9e8b4a286d70df9487bff080816bd07ae38af5f8 by Evan Brown <ezb@google.com>:
Add btree_node::transfer_n/transfer_n_backward and replace usage of uninitialized_move_n and value_destroy_n.
PiperOrigin-RevId: 314600027
--
6c452aa1ee7e46ab941ba7d1fa636da8ea3d7370 by Laramie Leavitt <lar@google.com>:
Remove the MockingBitGenBase base class in favor of type-erasure in BitGenRef.
In Abseil random, mocking was split across two different classes,
MockingBitGenBase and MockingBitGen. This split existed because Google Mock is a
test-only library that we don't link into production, so MockingBitGenBase
provided a low-overhead scaffold used to lookup mocks when in test code, but
which is unused in production code.
That has been replaced by type-erasure which looks for a method named
CallImpl with the correct signature.
Weaken the coupling between MockingBitGen, DistributionCaller, and MockOverloadSet.
Rename CallImpl to InvokeMock()
Previously, the implementation of DistributionCaller was also split across different files using explicit instantiation of the DistributionCaller struct and some details in the Mocking classes. Now Distribution caller uses the presence of the InvokeMock() method to choose whether to use the mockable call path or the default call path.
PiperOrigin-RevId: 314584095
--
07853c47dc98698d67d65a3b9b662a65ab9def0a by Abseil Team <absl-team@google.com>:
Add PC / backtrace / symbolization support for Apple platforms.
Full backtrace support requires iOS 9+
PiperOrigin-RevId: 314415072
--
43889f17a132b31f6558c6482721cbbc776128fd by Gennadiy Rozental <rogeeff@google.com>:
Consolidate all reflection interface in the new module 'reflection' and expose interface to locate reflection handle by name.
PiperOrigin-RevId: 314390358
GitOrigin-RevId: 9e8b4a286d70df9487bff080816bd07ae38af5f8
Change-Id: I8e0910437740cf9ea9da5000adddfcef127e1158
--
7d0468a6610ed85586d5c87fd65de8dac5118923 by Derek Mauro <dmauro@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 313226473
--
1131ef6d116f5ce7d46537a82f300ea06dcaaa53 by Gennadiy Rozental <rogeeff@google.com>:
Migrate internal interface to use mutable references.
PiperOrigin-RevId: 312931131
--
96225212a9f5fbd0b38c71fe65539164992c7c3b by Laramie Leavitt <lar@google.com>:
Remove random/internal/distributions.h
This file was something of an historical artifact. All of the related
code has either been removed or migraged, and so the only remaining type
belongs with uniform_helper.h, as it is used to infer the return type
of the absl::Uniform method in a few cases.
PiperOrigin-RevId: 312878173
--
6dcbd5be58ad425e08740ff64088373ee7fe4a72 by Mark Barolak <mbar@google.com>:
Release the StrFormat test case for Cords to open source.
PiperOrigin-RevId: 312707974
--
34484d18dfb63a0a7ad6e2aaeb570e33592968be by Abseil Team <absl-team@google.com>:
Let Cord::Cord(string&&), Cord::operator=(string&&),
Cord::Append(string&&), and Cord::Prepend(string&&) steal string data
and embed it into the Cord as a single external chunk, instead of
copying it into flat chunks (at most 4083-byte each).
Stealing string data is faster, but it creates a long chunk, which leads
to a higher more memory usage if its subcords are created and outlive
the whole Cord.
These functions revert to copying the data if any of the following
conditions holds:
- string size is at most kMaxBytesToCopy (511), to avoid the overhead
of an external chunk for short strings;
- less than half of string capacity is used, to avoid pinning to much
unused memory.
PiperOrigin-RevId: 312683785
GitOrigin-RevId: 7d0468a6610ed85586d5c87fd65de8dac5118923
Change-Id: If79b5a1dfe6d53a8ddddbc7da84338f11fc4cfa3
--
f012012ef78234a6a4585321b67d7b7c92ebc266 by Laramie Leavitt <lar@google.com>:
Slight restructuring of absl/random/internal randen implementation.
Convert round-keys.inc into randen_round_keys.cc file.
Consistently use a 128-bit pointer type for internal method parameters. This allows simpler pointer arithmetic in C++ & permits removal of some constants and casts.
Remove some redundancy in comments & constexpr variables. Specifically, all references to Randen algorithm parameters use RandenTraits; duplication in RandenSlow removed.
PiperOrigin-RevId: 312190313
--
dc8b42e054046741e9ed65335bfdface997c6063 by Abseil Team <absl-team@google.com>:
Internal change.
PiperOrigin-RevId: 312167304
--
f13d248fafaf206492c1362c3574031aea3abaf7 by Matthew Brown <matthewbr@google.com>:
Cleanup StrFormat extensions a little.
PiperOrigin-RevId: 312166336
--
9d9117589667afe2332bb7ad42bc967ca7c54502 by Derek Mauro <dmauro@google.com>:
Internal change
PiperOrigin-RevId: 312105213
--
9a12b9b3aa0e59b8ee6cf9408ed0029045543a9b by Abseil Team <absl-team@google.com>:
Complete IGNORE_TYPE macro renaming.
PiperOrigin-RevId: 311999699
--
64756f20d61021d999bd0d4c15e9ad3857382f57 by Gennadiy Rozental <rogeeff@google.com>:
Switch to fixed bytes specific default value.
This fixes the Abseil Flags for big endian platforms.
PiperOrigin-RevId: 311844448
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bdbe6b5b29791dbc3816ada1828458b3010ff1e9 by Laramie Leavitt <lar@google.com>:
Change many distribution tests to use pcg_engine as a deterministic source of entropy.
It's reasonable to test that the BitGen itself has good entropy, however when testing the cross product of all random distributions x all the architecture variations x all submitted changes results in a large number of tests. In order to account for these failures while still using good entropy requires that our allowed sigma need to account for all of these independent tests.
Our current sigma values are too restrictive, and we see a lot of failures, so we have to either relax the sigma values or convert some of the statistical tests to use deterministic values.
This changelist does the latter.
PiperOrigin-RevId: 311840096
GitOrigin-RevId: f012012ef78234a6a4585321b67d7b7c92ebc266
Change-Id: Ic84886f38ff30d7d72c126e9b63c9a61eb729a1a
Abseil Team
Vertexwahn
Rei Shimizu