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Victor Zverovich 2020-07-05 06:29:05 -07:00
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ChangeLog.rst
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@ -1,11 +1,11 @@
7.0.0 - TBD
-----------
* Reduced the library size. For example, on macOS the stripped binary
* Reduced the library size. For example, on macOS a stripped test binary
statically linked with {fmt} `shrank from ~368k to less than 100k
<http://www.zverovich.net/2020/05/21/reducing-library-size.html>`_.
* Added sa impler and more efficient `format string compilation API
* Added a impler and more efficient `format string compilation API
<https://fmt.dev/dev/api.html#compile-api>`_:
.. code:: c++
@ -19,14 +19,23 @@
The old ``fmt::compile`` API is now deprecated.
* Optimized integer formatting: ``format_to`` with format string compilation
and a stack-allocated buffer is now `faster than to_chars` on both
and a stack-allocated buffer is now `faster than to_chars on both
libc++ and libstdc++
<http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html>`_.
* Optimized handling of small format strings. For example,
.. code:: c++
fmt::format("Result: {}: ({},{},{},{})", str1, str2, str3, str4, str5)
is now ~40% faster (`#1685 <https://github.com/fmtlib/fmt/issues/1685>`_).
* Applied extern templates to improve compile times when using the core API
and ``fmt/format.h`` (`#1452`_). For example, on macOS with clang the compile
time of a test translation unit dropped from 2.3s to 0.3s with ``-O2`` and
from 0.6s to 0.3s with the default settings (``-O0``).
and ``fmt/format.h`` (`#1452 <https://github.com/fmtlib/fmt/issues/1452>`_).
For example, on macOS with clang the compile time of a test translation unit
dropped from 2.3s to 0.3s with ``-O2`` and from 0.6s to 0.3s with the default
settings (``-O0``).
Before (``-O2``)::
@ -54,7 +63,7 @@
Thanks `@alex3d <https://github.com/alex3d>`_ for the suggestion.
* Named arguments are now stored on stack (no dynamic memory allocations) and
the generated binary code is more compact and efficient. For example
the compiled code is more compact and efficient. For example
.. code:: c++
@ -150,35 +159,15 @@
compatibility with ``std::format``
(`#1652 <https://github.com/fmtlib/fmt/issues/1652>`_).
* Implemented the ``'L'`` format specifier for locale-specific formatting of
floating-point numbers for compatibility with ``std::format``
(`#1624 <https://github.com/fmtlib/fmt/issues/1624>`_).
The ``'n'`` specifier is now disabled by default but can be enabled via the
``FMT_DEPRECATED_N_SPECIFIER`` macro.
* Replaced the ``'n'`` format specifier with ``'L'`` for compatibility with
``std::format`` (`#1624 <https://github.com/fmtlib/fmt/issues/1624>`_).
The ``'n'`` specifier can be enabled via the ``FMT_DEPRECATED_N_SPECIFIER``
macro.
* The ``'='`` format specifier is now disabled by default for compatibility with
``std::format``. It can be enabled via the ``FMT_DEPRECATED_NUMERIC_ALIGN``
macro.
* Optimized handling of small format strings. For example,
.. code:: c++
fmt::format("Result: {}: ({},{},{},{})", str1, str2, str3, str4, str5)
is now ~40% faster (`#1685 <https://github.com/fmtlib/fmt/issues/1685>`_).
* Improved compatibility between ``fmt::printf`` with the standard specs
(`#1595 <https://github.com/fmtlib/fmt/issues/1595>`_,
`#1682 <https://github.com/fmtlib/fmt/pull/1682>`_,
`#1683 <https://github.com/fmtlib/fmt/pull/1683>`_,
`#1687 <https://github.com/fmtlib/fmt/pull/1687>`_,
`#1699 <https://github.com/fmtlib/fmt/pull/1699>`_).
Thanks `@rimathia <https://github.com/rimathia>`_.
* Fixed handling of ``operator<<` overloads that use ``copyfmt``
(`#1666 <https://github.com/fmtlib/fmt/issues/1666>`_).
* Removed the following deprecated APIs:
* ``FMT_STRING_ALIAS`` and ``fmt`` macros - replaced by ``FMT_STRING``
@ -195,6 +184,17 @@
(`#1538 <https://github.com/fmtlib/fmt/issues/1538>`_). The former is still
provided as an alias if the ``FMT_USE_INTERNAL`` macro is defined.
* Improved compatibility between ``fmt::printf`` with the standard specs
(`#1595 <https://github.com/fmtlib/fmt/issues/1595>`_,
`#1682 <https://github.com/fmtlib/fmt/pull/1682>`_,
`#1683 <https://github.com/fmtlib/fmt/pull/1683>`_,
`#1687 <https://github.com/fmtlib/fmt/pull/1687>`_,
`#1699 <https://github.com/fmtlib/fmt/pull/1699>`_).
Thanks `@rimathia <https://github.com/rimathia>`_.
* Fixed handling of ``operator<<` overloads that use ``copyfmt``
(`#1666 <https://github.com/fmtlib/fmt/issues/1666>`_).
* Added the ``FMT_OS`` CMake option to control inclusion of OS-specific APIs
in the fmt target. This can be useful for embedded platforms
(`#1654 <https://github.com/fmtlib/fmt/issues/1654>`_,
@ -224,7 +224,8 @@
`#1721 <https://github.com/fmtlib/fmt/pull/1721>`_,
`#1739 <https://github.com/fmtlib/fmt/pull/1739>`_,
`#1740 <https://github.com/fmtlib/fmt/pull/1740>`_,
`#1741 <https://github.com/fmtlib/fmt/pull/1741>`_).
`#1741 <https://github.com/fmtlib/fmt/pull/1741>`_,
`#1751 <https://github.com/fmtlib/fmt/pull/1751>`_).
Thanks `@senior7515 (Alexander Gallego) <https://github.com/senior7515>`_,
`@lsr0 (Lindsay Roberts) <https://github.com/lsr0>`_,
`@puetzk (Kevin Puetz) <https://github.com/puetzk>`_,
@ -232,7 +233,8 @@
Alexey Kuzmenko, `@jelly (jelle van der Waa) <https://github.com/jelly>`_,
`@claremacrae (Clare Macrae) <https://github.com/claremacrae>`_,
`@jiapengwen (文佳鹏) <https://github.com/jiapengwen>`_,
`@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_.
`@gsjaardema (Greg Sjaardema) <https://github.com/gsjaardema>`_,
`@alexey-milovidov <https://github.com/alexey-milovidov>`_.
* Implemented various build configuration fixes and improvements
(`#1603 <https://github.com/fmtlib/fmt/pull/1603>`_,