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Joseph Myers 8807e560c0 Define __STDC_IEC_60559_BFP__ and __STDC_IEC_60559_COMPLEX__
TS 18661-1 and C2X specify predefined macros __STDC_IEC_60559_BFP__
and __STDC_IEC_60559_COMPLEX__, making __STDC_IEC_559__ and
__STDC_IEC_559_COMPLEX__ obsolescent (but still included in the
standard).  Now that we have all the functions from TS 18661-1, define
these macros in stdc-predef.h, under the same conditions in which the
older macros are defined, since support for the floating-point
features in TS 18661-1 is now at the same level as that for those in
C11 and before (all library functions and other library APIs present,
but no standard pragma support).

The macros are defined for now with their TS 18661-1 values.  C2X will
give them new values (listed as yyyymmL in the working drafts until
the final standard), at which point there will be the question of what
value to use in stdc-predef.h (where it could depend on
__STDC_VERSION__, but not on feature test macros defined by the user).
My inclination then would be to use the C2X value unconditionally
rather than using an older value to indicate TS support, and only have
any C standard version conditionals for the value when subsequent C
standard versions define further values.

(Note that I'm also inclined, when we implement the C2X change to the
return types of fromfp functions, to make that change unconditional
much like the change made to the types of totalorder functions, with
the old version only supported with compat symbols for already-linked
programs and not as an API for newly built objects.  So using the C2X
value would also accurately reflect not supporting the versions of
APIs in the TS where those ended up being incompatible with the first
version actually added to the standard.)

Tested for x86_64.
2021-09-24 20:11:56 +00:00
argp Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
assert Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
benchtests benchtests: Fix validate_benchout.py exceptions 2021-09-16 09:19:55 +05:30
bits Update floating-point feature test macro handling for C2X 2021-06-01 14:22:06 +00:00
catgets Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
ChangeLog.old Update ChangeLog.old/ChangeLog.23. 2021-08-01 21:33:43 -04:00
conform Use $(pie-default) with conformtest 2021-09-17 19:24:14 +00:00
crypt Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
csu Extend struct r_debug to support multiple namespaces [BZ #15971] 2021-09-19 13:51:35 -07:00
ctype Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
debug Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
dirent Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
dlfcn Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
elf ld.so: Replace DL_RO_DYN_SECTION with dl_relocate_ld [BZ #28340] 2021-09-22 11:12:43 -07:00
gmon Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
gnulib Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
grp Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
gshadow Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
hesiod Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
htl htl: Move thread table to ld.so 2021-09-16 01:04:05 +02:00
hurd Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
iconv iconvconfig: Fix behaviour with --prefix [BZ #28199] 2021-09-13 20:48:35 +05:30
iconvdata Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
include Define __STDC_IEC_60559_BFP__ and __STDC_IEC_60559_COMPLEX__ 2021-09-24 20:11:56 +00:00
inet Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
intl Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
io Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
libio Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
locale locale: Add missing second argument to _Static_assert in C-collate-seq.c 2021-09-06 19:43:37 +02:00
localedata Add generic C.UTF-8 locale (Bug 17318) 2021-09-06 11:30:28 -04:00
login Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
mach Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
manual Add narrowing fma functions 2021-09-22 21:25:31 +00:00
math Add narrowing fma functions 2021-09-22 21:25:31 +00:00
mathvec Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
misc regex: copy back from Gnulib 2021-09-21 08:00:44 -07:00
nis Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nptl nptl: Avoid setxid deadlock with blocked signals in thread exit [BZ #28361] 2021-09-23 09:56:07 +02:00
nptl_db Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nscd Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
nss Fix failing nss/tst-nss-files-hosts-long with local resolver 2021-09-07 21:41:38 +02:00
po po/nl.po: Update Dutch translation. 2021-08-01 20:52:28 -04:00
posix regex: copy back from Gnulib 2021-09-21 08:00:44 -07:00
pwd Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
resolv Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
resource y2038: Add support for 64-bit time on legacy ABIs 2021-06-15 10:42:11 -03:00
rt Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
scripts build-many-glibcs.py: add powerpc64le glibc variant without multiarch 2021-09-24 14:32:35 -05:00
setjmp nptl: Move __pthread_unwind_next into libc 2021-04-21 19:49:50 +02:00
shadow Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
signal Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
socket socket: Add time64 alias for setsockopt 2021-07-22 19:16:26 +02:00
soft-fp Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
stdio-common vfprintf: Unify argument handling in process_arg 2021-09-23 11:19:20 +02:00
stdlib Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
string Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
sunrpc Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
support xsysconf: Only fail on error results and errno set 2021-09-24 17:30:03 +09:00
sysdeps Fix sysdeps/x86/fpu/s_ffma.c for 32-bit FMA processor case 2021-09-24 17:59:22 +00:00
sysvipc Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
termios Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
time time: Fix compile error in itimer test affecting hurd 2021-09-16 05:21:08 +09:00
timezone Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
wcsmbs Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
wctype Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 configure: Replaced obsolete AC_TRY_COMPILE 2021-06-04 10:16:00 -03:00
config.h.in x86-64: Remove assembler AVX512DQ check 2021-08-24 07:05:35 -07:00
config.make.in Add pthread-in-libc, libpthread-routines-var, librt-routines-var 2021-05-03 08:13:32 +02:00
configure configure: Fix check for INSERT in linker script 2021-09-13 12:39:20 -07:00
configure.ac configure: Fix check for INSERT in linker script 2021-09-13 12:39:20 -07:00
CONTRIBUTED-BY Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
COPYING Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
COPYING.LIB Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
INSTALL Update install.texi, and regenerate INSTALL. 2021-08-01 16:48:43 -04:00
libc-abis riscv: support GNU indirect function 2021-01-10 21:25:13 -05:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Run conform/ tests using newly built libc 2021-09-17 13:12:10 +00:00
Makefile testrun.sh: Add support for --tool=rpctrace 2021-09-10 01:24:10 +02:00
Makefile.help Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Install shared objects under their ABI names 2021-06-28 08:33:57 +02:00
NEWS Define __STDC_IEC_60559_BFP__ and __STDC_IEC_60559_COMPLEX__ 2021-09-24 20:11:56 +00:00
o-iterator.mk Fri Mar 17 12:58:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> 1995-03-17 18:42:51 +00:00
README Documentation for the RISC-V 32-bit port 2020-08-27 08:17:44 -07:00
Rules Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
SHARED-FILES Mention today's regex merge in SHARED-FILES 2021-09-21 18:00:10 -07:00
shlib-versions Move malloc hooks into a compat DSO 2021-07-22 18:37:59 +05:30
test-skeleton.c Remove "Contributed by" lines 2021-09-03 22:06:44 +05:30
version.h Open master branch for glibc 2.35 development 2021-08-01 21:54:40 -04:00

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
	alpha*-*-linux-gnu
	arc*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
	m68k-*-linux-gnu
	microblaze*-*-linux-gnu
	mips-*-linux-gnu
	mips64-*-linux-gnu
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.
	s390-*-linux-gnu
	s390x-*-linux-gnu
	riscv32-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see https://www.gnu.org/software/libc/ for more
information.

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at https://www.gnu.org/software/libc/.

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
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