* Mon Apr 06 2020 Luigi Baldoni <aloisio@gmx.com>
- Update to version 6.2.0
* Improved error reporting when trying to format an object of
a non-formattable type:
* Reduced library size by ~10%.
* Always print decimal point if # is specified (#1476, #1498):
* Implemented the 'L' specifier for locale-specific numeric
formatting to improve compatibility with std::format. The 'n'
specifier is now deprecated and will be removed in the next
major release.
* Moved OS-specific APIs such as windows_error from
fmt/format.h to fmt/os.h. You can define
FMT_DEPRECATED_INCLUDE_OS to automatically include fmt/os.h from
fmt/format.h for compatibility but this will be disabled in the
next major release.
* Added precision overflow detection in floating-point
formatting.
* Implemented detection of invalid use of fmt::arg.
* Used type_identity to block unnecessary template argument
deduction.
* Improved UTF-8 handling (#1109):
* Added experimental dynamic argument storage (#1170, #1584):
* Made fmt::join accept initializer_list (#1591).
* Fixed handling of empty tuples (#1588).
* Fixed handling of output iterators in format_to_n (#1506).
* Fixed formatting of std::chrono::duration types to wide
output (#1533).
* Added const begin and end overload to buffers (#1553).
* Added the ability to disable floating-point formatting via
FMT_USE_FLOAT, FMT_USE_DOUBLE and FMT_USE_LONG_DOUBLE macros for
extremely memory-constrained embedded system (#1590).
* Made FMT_STRING work with constexpr string_view (#1589).
* Implemented a minor optimization in the format string parser
(#1560).
* Improved attribute detection (#1469, #1475, #1576).
* Improved documentation (#1481, #1523).
* Fixed symbol visibility on Linux when compiling with
- fvisibility=hidden (#1535).
* Implemented various build configuration fixes and
improvements (#1264, #1460, #1534, #1536, #1545, #1546, #1566,
[#1582], #1597, #1598).
* Fixed various warnings and compilation issues
- Dropped Group tag
* Wed Dec 04 2019 Luigi Baldoni <aloisio@gmx.com>
- Update to version 6.1.0
* {fmt} now formats IEEE 754 ``float`` and ``double`` using
the shortest decimal representation with correct rounding by
default:
.. code:: c++
[#]include <cmath>
[#]include <fmt/core.h>
int main() {
fmt::print("{}", M_PI);
}
prints ``3.141592653589793``.
* Made the fast binary to decimal floating-point formatter the
default, simplified it and improved performance. {fmt} is now
15 times faster than libc++'s ``std::ostringstream``, 11
times faster than ``printf`` and 10% faster than
double-conversion on `dtoa-benchmark
(https://github.com/fmtlib/dtoa-benchmark)
================== ========= =======
Function Time (ns) Speedup
================== ========= =======
ostringstream 1,346.30 1.00x
ostrstream 1,195.74 1.13x
sprintf 995.08 1.35x
doubleconv 99.10 13.59x
fmt 88.34 15.24x
================== ========= =======
* {fmt} no longer converts ``float`` arguments to ``double``.
In particular this improves the default (shortest)
representation of floats and makes
``fmt::format`` consistent with ``std::format`` specs
(#1336, #1353, #1360, #1361)
.. code:: c++
fmt::print("{}", 0.1f);
prints ``0.1`` instead of ``0.10000000149011612``.
* Made floating-point formatting output consistent with
``printf``/iostreams (#1376, #1417)
* Added support for 128-bit integers (#1287)
.. code:: c++
fmt::print("{}", std::numeric_limits<__int128_t>::max());
prints ``170141183460469231731687303715884105727``.
* The overload of ``print`` that takes ``text_style`` is now
atomic, i.e. the output from different threads doesn't
interleave (#1351)
* Made compile time in the header-only mode ~20% faster by
reducing the number of template instantiations. ``wchar_t``
overload of ``vprint`` was moved from
``fmt/core.h`` to ``fmt/format.h``.
* Added an overload of ``fmt::join`` that works with tuples
(#1322, #1330)
.. code:: c++
[#]include <tuple>
[#]include <fmt/ranges.h>
int main() {
std::tuple<char, int, float> t{'a', 1, 2.0f};
fmt::print("{}", t);
}
prints ``('a', 1, 2.0)``.
* Changed formatting of octal zero with prefix from "0o0" to
"0":
.. code:: c++
fmt::print("{:#o}", 0);
prints ``0``.
* The locale is now passed to ostream insertion (``<<``)
operators (#1406)
.. code:: c++
[#]include <fmt/locale.h>
[#]include <fmt/ostream.h>
struct S {
double value;
};
std::ostream& operator<<(std::ostream& os, S s) {
return os << s.value;
}
int main() {
auto s = fmt::format(std::locale("fr_FR.UTF-8"), "{}", S{0.42});
// s == "0,42"
}
* Locale-specific number formatting now uses grouping (#1393,
[#1394])
* Fixed handling of types with deleted implicit rvalue
conversion to ``const char**`` (#1421)
.. code:: c++
struct mystring {
operator const char*() const&;
operator const char*() &;
operator const char*() const&& = delete;
operator const char*() && = delete;
};
mystring str;
fmt::print("{}", str); // now compiles
* Enums are now mapped to correct underlying types instead of
``int`` (#1286)
* Enum classes are no longer implicitly converted to ``int``
(#1424)
* Added ``basic_format_parse_context`` for consistency with
C++20 ``std::format`` and deprecated ``basic_parse_context``.
* Fixed handling of UTF-8 in precision (#1389, #1390)
* Added a CUDA test (#1285, #1317)
* Improved documentation (#1276, #1291, #1296, #1315, #1332,
[#1337], #1395, #1418)
* Various code improvements (#1358, #1407)
* Fixed compile-time format string checks for user-defined
types (#1292)
* Worked around a false positive in
``unsigned-integer-overflow`` sanitizer (#1377)
* Fixed various warnings and compilation issues (#1273, #1278,
[#1280], #1281, #1288, #1290, #1301, #1305, #1306, #1309,
[#1312], #1313, #1316, #1319, #1320, #1326, #1328, #1344,
[#1345], #1347, #1349, #1354, #1362, #1366, #1364, #1370,
[#1371], #1385, #1388, #1397, #1414, #1416, #1422, #1427,
[#1431], #1433)
- Dropped fmt-bigendian_1.patch, fmt-bigendian_2.patch,
fmt-bigendian_3.patch and fmt-bigendian_4.patch (merged
upstream)