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Victor Zverovich 2021-05-29 07:30:07 -07:00
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ChangeLog.rst
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@ -6,7 +6,8 @@
`#2044 <https://github.com/fmtlib/fmt/pull/2044>`_, `#2044 <https://github.com/fmtlib/fmt/pull/2044>`_,
`#2056 <https://github.com/fmtlib/fmt/pull/2056>`_, `#2056 <https://github.com/fmtlib/fmt/pull/2056>`_,
`#2072 <https://github.com/fmtlib/fmt/pull/2072>`_, `#2072 <https://github.com/fmtlib/fmt/pull/2072>`_,
`#2129 <https://github.com/fmtlib/fmt/pull/2129>`_). For example: `#2129 <https://github.com/fmtlib/fmt/pull/2129>`_).
For example (`godbolt <https://godbolt.org/z/Mxx9d89jM`__):
.. code:: c++ .. code:: c++
@ -18,14 +19,16 @@
return result; return result;
} }
constexpr auto answer = compile_time_itoa(42);
Most of the formatting functionality is available at compile time with a Most of the formatting functionality is available at compile time with a
notable exception of floating-point numbers and pointers. notable exception of floating-point numbers and pointers.
Thanks `@alexezeder (Alexey Ochapov) <https://github.com/alexezeder>`_. Thanks `@alexezeder (Alexey Ochapov) <https://github.com/alexezeder>`_.
* Optimized handling of format specifiers during format string compilation. * Optimized handling of format specifiers during format string compilation.
For example, hexadecimal formatting (``"{:x}"``) is 3-7x faster when using For example, hexadecimal formatting (``"{:x}"``) is now 3-7x faster than
``format_to`` with format string compilation and a stack-allocated buffer before when using ``format_to`` with format string compilation and a
(`#1944 <https://github.com/fmtlib/fmt/issues/1944>`_). stack-allocated buffer (`#1944 <https://github.com/fmtlib/fmt/issues/1944>`_).
Before (7.1.3):: Before (7.1.3)::
@ -62,7 +65,8 @@
---------------------------------------------------------------------------- ----------------------------------------------------------------------------
In other cases, especially involving ``std::string`` construction, the speed In other cases, especially involving ``std::string`` construction, the speed
up can be lower. up can be lower because handling format specifiers takes smaller fraction of
total time.
* Added the ``_cf`` user-defined literal to represent a compiled format string. * Added the ``_cf`` user-defined literal to represent a compiled format string.
It can be used instead of the ``FMT_COMPILE`` macro It can be used instead of the ``FMT_COMPILE`` macro
@ -141,9 +145,8 @@
Thanks `@kamibo (Camille Bordignon) <https://github.com/kamibo>`_. Thanks `@kamibo (Camille Bordignon) <https://github.com/kamibo>`_.
* Made chrono formatting locale independent by default for consistency with * Made more chrono specifiers locale independent by default. Use the ``'L'``
formatting of other types. Use the ``'L'`` specifier to get localized specifier to get localized formatting. For example:
formatting. For example:
.. code:: c++ .. code:: c++