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2800bc08e4
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Patrick Palka 2800bc08e4 libstdc++: Import the fast_float library 
We're going to use the fast_float library[1] in our (compiled-in)
floating-point std::from_chars implementation for faster and more
portable parsing of binary32/64 decimal strings.

The single file fast_float.h is an amalgamation of the entire library,
which can be (re)generated with the amalgamate.py script (from the
fast_float repository) via the command

  python3 ./script/amalgamate.py --license=MIT \
    > $GCC_SRC/libstdc++-v3/c++17/fast_float/fast_float.h

The code has a GPL-compatible license.

[1]: https://github.com/fastfloat/fast_float

libstdc++-v3/ChangeLog:

	* src/c++17/fast_float/LOCAL_PATCHES: New file.
	* src/c++17/fast_float/MERGE: New file.
	* src/c++17/fast_float/README.md: New file, copied from the
	fast_float repository.
	* src/c++17/fast_float/fast_float.h: New file, an amalgamation
	of the fast_float library.

Signed-off-by: Patrick Palka <ppalka@redhat.com>
2022-01-17 14:32:16 -05:00
..
config libstdc++: Add %j, %U, %w, %W time_get support, fix %y, %Y, %C, %p [PR77760] 2022-01-10 15:38:47 +01:00
doc libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
include libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
libsupc++ libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
po libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
python libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
scripts Update copyright years. 2022-01-03 10:42:10 +01:00
src libstdc++: Import the fast_float library 2022-01-17 14:32:16 -05:00
testsuite libstdc++: Directly implement hexfloat std::from_chars for binary32/64 2022-01-17 14:32:13 -05:00
acinclude.m4 libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
aclocal.m4
ChangeLog Daily bump. 2022-01-17 00:16:24 +00:00
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ChangeLog-2020 libstdc++: Fix typo in ChangeLog-2020 2021-01-13 11:02:13 +00:00
ChangeLog-2021 Rotate ChangeLog files - part 1 - add ChangeLog-2021. 2022-01-03 10:18:16 +01:00
config.h.in libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
configure libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
configure.ac libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
configure.host Scope libstdc++ configuration for vxworks to all versions 2020-10-22 16:40:57 +00:00
crossconfig.m4 libstdc++: Check for TLS support on mingw cross-compilers 2021-09-15 09:49:33 +01:00
fragment.am libstdc++: Add C++ runtime support for new 128-bit long double format 2020-12-16 23:25:01 +00:00
linkage.m4
Makefile.am Update copyright years. 2022-01-03 10:42:10 +01:00
Makefile.in libstdc++: Define <stacktrace> header for C++23 2022-01-17 12:13:02 +00:00
README

README 

file: libstdc++-v3/README

New users may wish to point their web browsers to the file
index.html in the 'doc/html' subdirectory.  It contains brief
building instructions and notes on how to configure the library in
interesting ways.