container_hash/doc/changes.qbk
2018-04-04 00:32:53 +01:00

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[/ Copyright 2005-2008 Daniel James.
/ Distributed under the Boost Software License, Version 1.0. (See accompanying
/ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) ]
[template ticket[number]'''<ulink url="https://svn.boost.org/trac/boost/ticket/'''[number]'''">'''#[number]'''</ulink>''']
[section:changes Change Log]
[h2 Boost 1.33.0]
* Initial Release
[h2 Boost 1.33.1]
* Fixed the points example, as pointed out by 沈慧峰.
[h2 Boost 1.34.0]
* Use declarations for standard classes, so that the library
doesn't need to include all of their headers
* Deprecated the `<boost/functional/hash/*.hpp>` headers. Now a single header,
<[headerref boost/functional/hash.hpp]> is used.
* Add support for the `BOOST_HASH_NO_EXTENSIONS` macro, which
disables the extensions to TR1.
* Minor improvements to the hash functions for floating point numbers.
* Update the portable example to hopefully be more generally portable.
[h2 Boost 1.34.1]
* [@http://svn.boost.org/trac/boost/ticket/952 Ticket 952]:
Suppress incorrect 64-bit warning on Visual C++.
[h2 Boost 1.35.0]
* Support for `long long`, `std::complex`.
* Improved algorithm for hashing floating point numbers:
* Improved portablity, as described by Daniel Krügler in
[@http://lists.boost.org/boost-users/2005/08/13418.php
a post to the boost users list].
* Fits more information into each combine loop, which can reduce the
the number of times combine is called and hopefully give a better
quality hash function.
* Improved the algorithm for hashing floating point numbers.
* On Cygwin use a binary hash function for floating point numbers, as
Cygwin doesn't have decent floating point functions for `long double`.
* Never uses `fpclass` which doesn't support `long double`.
* [@http://svn.boost.org/trac/boost/ticket/1064 Ticket 1064]:
Removed unnecessary use of `errno`.
* Explicitly overload for more built in types.
* Minor improvements to the documentation.
* A few bug and warning fixes:
* [@http://svn.boost.org/trac/boost/ticket/1509 Ticket 1509]:
Suppress another Visual C++ warning.
* Some workarounds for the Sun compilers.
[h2 Boost 1.36.0]
* Stop using OpenBSD's dodgy `std::numeric_limits`.
* Using the boost typedefs for `long long` and `unsigned long long`.
* Move the extensions into their own header.
[h2 Boost 1.37.0]
* [@http://svn.boost.org/trac/boost/ticket/2264 Ticket 2264]:
In Visual C++, always use C99 float functions for `long double` and `float` as
the C++ overloads aren't always availables.
[h2 Boost 1.38.0]
* Changed the warnings in the deprecated headers from 1.34.0 to errors. These
will be removed in a future version of Boost.
* Moved detail headers out of `boost/container_hash/detail`, since they are part of
functional/hash, not container_hash. `boost/container_hash/detail/container_fwd.hpp`
has been moved to `boost/detail/container_fwd.hpp` as it's used outside of
this library, the others have been moved to `boost/functional/hash/detail`.
[h2 Boost 1.39.0]
* Move the hash_fwd.hpp implementation into the hash subdirectory, leaving a
forwarding header in the old location. You should still use the old location,
the new location is mainly for implementation and possible modularization.
* [@https://svn.boost.org/trac/boost/ticket/2412 Ticket 2412]: Removed deprecated
headers.
* [@https://svn.boost.org/trac/boost/ticket/2957 Ticket 2957]: Fix configuration
for vxworks.
[h2 Boost 1.40.0]
* Automatically configure the float functions using template metaprogramming
instead of trying to configure every possibility manually.
* Workaround for when STLport doesn't support long double.
[h2 Boost 1.42.0]
* Reduce the number of warnings for Visual C++ warning level 4.
* Some code formatting changes to fit lines into 80 characters.
* Rename an internal namespace.
[h2 Boost 1.43.0]
* [@https://svn.boost.org/trac/boost/ticket/3866 Ticket 3866]:
Don't foward declare containers when using gcc's parallel library,
allow user to stop forward declaration by defining the
`BOOST_DETAIL_NO_CONTAINER_FWD` macro.
* [@https://svn.boost.org/trac/boost/ticket/4038 Ticket 4038]:
Avoid hashing 0.5 and 0 to the same number.
* Stop using deprecated `BOOST_HAS_*` macros.
[h2 Boost 1.44.0]
* Add option to prevent implicit conversions when calling `hash_value` by
defining `BOOST_HASH_NO_IMPLICIT_CASTS`. When using `boost::hash`
for a type that does not have `hash_value` declared but does have
an implicit conversion to a type that does, it would use that
implicit conversion to hash it. Which can sometimes go very wrong,
e.g. using a conversion to bool and only hashing to 2 possible
values. Since fixing this is a breaking change and was only
approached quite late in the release cycle with little discussion
it's opt-in for now. This, or something like it, will become the
default in a future version.
[h2 Boost 1.46.0]
* Avoid warning due with gcc's `-Wconversion` flag.
[h2 Boost 1.50.0]
* [@http://svn.boost.org/trac/boost/ticket/6771 Ticket 6771]:
Avoid gcc's `-Wfloat-equal` warning.
* [@http://svn.boost.org/trac/boost/ticket/6806 Ticket 6806]:
Support `std::array` and `std::tuple` when available.
* Add deprecation warning to the long deprecated
`boost/container_hash/detail/container_fwd.hpp`.
[h2 Boost 1.51.0]
* Support the standard smart pointers.
* `hash_value` now implemented using SFINAE to avoid implicit casts to built
in types when calling it.
* Updated to use the new config macros.
[h2 Boost 1.52.0]
* Restore `enum` support, which was accidentally removed in the last version.
* New floating point hasher - will hash the binary representation on more
platforms, which should be faster.
[h2 Boost 1.53.0]
* Add support for `boost::int128_type` and `boost::uint128_type` where
available - currently only `__int128` and `unsigned __int128` on some
versions of gcc.
* On platforms that are known to have the standard floating point functions,
don't use automatic detection - which can break if there are ambiguous
overloads.
* Fix undefined behaviour when using the binary float hash (Thomas Heller).
[h2 Boost 1.54.0]
* [@https://svn.boost.org/trac/boost/ticket/7957 Ticket 7957]:
Fixed a typo.
[h2 Boost 1.55.0]
* Simplify a SFINAE check so that it will hopefully work on Sun 5.9
([ticket 8822]).
* Suppress Visual C++ infinite loop warning ([ticket 8568]).
[h2 Boost 1.56.0]
* Removed some Visual C++ 6 workarounds.
* Ongoing work on improving `hash_combine`. This changes the combine function
which was previously defined in the reference documentation.
[h2 Boost 1.58.0]
* Fixed strict aliasing violation
([@https://github.com/boostorg/container_hash/pull/3 GitHub #3]).
[h2 Boost 1.63.0]
* Fixed some warnings.
* Only define hash for `std::wstring` when we know we have a `wchar_t`.
Otherwise there's a compile error as there's no overload for hashing
the characters in wide strings ([ticket 8552]).
[h2 Boost 1.64.0]
* Fix for recent versions of Visual C++ which have removed `std::unary_function`
and `std::binary_function` ([ticket 12353]).
[h2 Boost 1.65.0]
* Support for `char16_t`, `char32_t`, `u16string`, `u32string`
[h2 Boost 1.66.0]
* Avoid float comparison warning when using Clang - this workaround was
already in place for GCC, and was used when Clang pretends to be GCC,
but the warning was appearing when running Clang in other contexts.
[h2 Boost 1.67.0]
* Moved library into its own module, `container_hash`.
* Moved headers for new module name, now at:
`<boost/container_hash/hash.hpp>`,
`<boost/container_hash/hash_fwd.hpp>`,
`<boost/container_hash/extensions.hpp>`.
* Added forwarding headers to support the old headers locations.
* Support `std::string_view`, `std::error_code`, `std::error_condition`
`std::optional`, `std::variant`, `std::monostate` where available.
* Update include paths from other Boost libraries.
* Manually write out tuple overloads, rather than using the
preprocessor to generate them. Should improve usability, due
to better error messages, and easier debugging.
* Fix tutorial example ([ticket 11017]).
* Quick fix for hashing `vector<bool>` when using libc++. Will try to introduce
a more general fix in the next release.
[endsect]