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Joseph Myers 9755bc4686 Use round functions not __round functions in glibc libm.
Continuing the move to use, within libm, public names for libm
functions that can be inlined as built-in functions on many
architectures, this patch moves calls to __round functions to call the
corresponding round names instead, with asm redirection to __round
when the calls are not inlined.

An additional complication arises in
sysdeps/ieee754/ldbl-128ibm/e_expl.c, where a call to roundl, with the
result converted to int, gets converted by the compiler to call
lroundl in the case of 32-bit long, so resulting in localplt test
failures.  It's logically correct to let the compiler make such an
optimization; an appropriate asm redirection of lroundl to __lroundl
is thus added to that file (it's not needed anywhere else).

Tested for x86_64, and with build-many-glibcs.py.

	* include/math.h [!_ISOMAC && !(__FINITE_MATH_ONLY__ &&
	__FINITE_MATH_ONLY__ > 0) && !NO_MATH_REDIRECT] (round): Redirect
	using MATH_REDIRECT.
	* sysdeps/aarch64/fpu/s_round.c: Define NO_MATH_REDIRECT before
	header inclusion.
	* sysdeps/aarch64/fpu/s_roundf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_round.c: Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_round.c: Likewise.
	* sysdeps/ieee754/float128/s_roundf128.c: Likewise.
	* sysdeps/ieee754/flt-32/s_roundf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_roundl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_roundl.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_round.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_roundf.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_round.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_roundf.c: Likewise.
	* sysdeps/riscv/rv64/rvd/s_round.c: Likewise.
	* sysdeps/riscv/rvf/s_roundf.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_roundl.c: Likewise.
	(round): Redirect to __round.
	(__roundl): Call round instead of __round.
	* sysdeps/powerpc/fpu/math_private.h [_ARCH_PWR5X] (__round):
	Remove macro.
	[_ARCH_PWR5X] (__roundf): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (gamma_positive): Use round
	functions instead of __round variants.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (gammaf_positive): Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c (gammal_positive):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (gammal_positive):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c (gammal_positive):
	Likewise.
	* sysdeps/x86/fpu/powl_helper.c (__powl_helper): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_expl.c (lroundl): Redirect to
	__lroundl.
	(__ieee754_expl): Call roundl instead of __roundl.
2018-09-27 12:35:23 +00:00
argp Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
assert Fix uninitialized variable in assert_perror (bug 22761) 2018-02-05 11:06:15 +01:00
benchtests Reallocate buffers for every run in strlen 2018-08-16 14:11:57 +05:30
bits Add <bits/indirect-return.h> 2018-07-24 07:55:47 -07:00
catgets intl/tst-gettext: fix failure with newest msgfmt 2018-02-18 18:16:05 +01:00
ChangeLog.old Add missing reference to bug 21654 2017-10-07 13:14:36 +02:00
conform Replace conform/list-header-symbols.pl with a Python script. 2018-08-31 21:19:51 +00:00
crypt New configure option --disable-crypt. 2018-06-29 16:53:47 +02:00
csu Build csu/elf-init.c and csu/static-reloc.c with stack protector 2018-07-05 22:57:45 +02:00
ctype Use libc_hidden_* for tolower, toupper (bug 15105). 2018-02-23 13:54:53 +00:00
debug __readlink_chk: Remove micro-optimization 2018-08-21 11:24:12 +02:00
dirent Consolidate alphasort{64} and versionsort{64} implementation 2018-04-23 17:35:16 -03:00
dlfcn libc: Extend __libc_freeres framework (Bug 23329). 2018-06-29 22:39:06 -04:00
elf Add missing unwind information to ld.so on powerpc32 (bug 23707) 2018-09-26 16:49:30 +02:00
gmon Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
gnulib Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
grp [BZ #20271] Add newlines in __libc_fatal calls. 2018-08-31 18:04:32 -07:00
gshadow Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
hesiod Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
htl hurd: Add missing symbols for proper libc_get/setspecific 2018-08-08 01:55:04 +02:00
hurd hurd: Fix exec usage of mach_setup_thread 2018-08-01 00:10:03 +02:00
iconv Clean up iconv/gconv_int.h for unnecessary declarations 2018-09-25 15:13:15 +02:00
iconvdata Fix out-of-bounds access in IBM-1390 converter (bug 23448) 2018-07-24 16:45:46 +02:00
include Use round functions not __round functions in glibc libm. 2018-09-27 12:35:23 +00:00
inet manual: Revise crypt.texi. 2018-06-29 16:53:37 +02:00
intl intl/tst-gettext: fix failure with newest msgfmt 2018-02-18 18:16:05 +01:00
io Avoid running some tests if the file system does not support holes 2018-08-21 12:56:53 +02:00
libio Fix copyright years in recent commits 2018-07-10 11:03:08 +02:00
locale Fix out of bounds access in findidxwc (bug 23442) 2018-07-25 10:50:03 +02:00
localedata it_CH/it_IT locales: Correct some LC_TIME formats (bug 10425). 2018-09-21 10:40:20 +02:00
login Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251) 2018-06-26 13:22:53 -03:00
mach hurd: Fix exec usage of mach_setup_thread 2018-08-01 00:10:03 +02:00
malloc malloc: Add ChangeLog for accidentally committed change 2018-08-20 14:57:13 +02:00
manual Don't build libnsl for new ABIs 2018-09-24 10:23:10 +02:00
math Add new pow implementation 2018-09-19 10:04:51 +01:00
mathvec Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
misc misc: New test misc/tst-gethostid 2018-09-20 12:03:01 +02:00
nis Don't build libnsl for new ABIs 2018-09-24 10:23:10 +02:00
nptl [BZ #20271] Add newlines in __libc_fatal calls. 2018-08-31 18:04:32 -07:00
nptl_db nptl_db: Remove stale match_pid' parameter from iterate_thread_list' 2018-03-01 16:10:05 +00:00
nscd [BZ #20271] Add newlines in __libc_fatal calls. 2018-08-31 18:04:32 -07:00
nss [BZ #20271] Add newlines in __libc_fatal calls. 2018-08-31 18:04:32 -07:00
po Update translations for be. 2018-08-24 22:26:41 -04:00
posix Use libsupport for tst-spawn.c 2018-09-25 10:49:23 -03:00
pwd manual: Revise crypt.texi. 2018-06-29 16:53:37 +02:00
resolv libc: Extend __libc_freeres framework (Bug 23329). 2018-06-29 22:39:06 -04:00
resource resource/tst-getrlimit.c: Add copyright header 2018-01-05 20:34:10 +01:00
rt hurd: Add hurd thread library 2018-04-02 01:44:14 +02:00
scripts Don't build libnsl for new ABIs 2018-09-24 10:23:10 +02:00
setjmp x86: Use pad in pthread_unwind_buf to preserve shadow stack register 2018-05-02 06:17:41 -07:00
shadow manual: Revise crypt.texi. 2018-06-29 16:53:37 +02:00
signal Add tst-sigaction.c to test BZ #23069 2018-04-26 22:21:13 +02:00
socket Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
soft-fp Make powerpc-nofpu __sqrtsf2, __sqrtdf2 compat symbols (bug 18473). 2018-06-01 17:25:12 +00:00
stdio-common error, warn, warnx: Use __fxprintf for wide printing [BZ #23519] 2018-08-14 17:54:49 +02:00
stdlib Fix stack overflow in tst-setcontext9 (bug 23717) 2018-09-27 12:31:03 +02:00
streams Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
string Fix strstr bug with huge needles (bug 23637) 2018-09-19 16:50:18 +01:00
sunrpc libc: Extend __libc_freeres framework (Bug 23329). 2018-06-29 22:39:06 -04:00
support test-container: Use xcopy_file_range for cross-device copy [BZ #23597] 2018-08-31 13:08:02 -07:00
sysdeps Use round functions not __round functions in glibc libm. 2018-09-27 12:35:23 +00:00
sysvipc Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
termios Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
time Fix mktime localtime offset confusion 2018-09-19 17:09:08 -07:00
timezone Avoid running some tests if the file system does not support holes 2018-08-21 12:56:53 +02:00
wcsmbs Add tests for sign of NaN returned by strtod (bug 23007). 2018-06-15 17:36:21 +00:00
wctype Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
.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 LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
ChangeLog Use round functions not __round functions in glibc libm. 2018-09-27 12:35:23 +00:00
config.h.in Switch IDNA implementation to libidn2 [BZ #19728] [BZ #19729] [BZ #22247] 2018-05-23 15:27:24 +02:00
config.make.in Fix ifunc support with DT_TEXTREL segments (BZ#20480) 2018-09-25 16:27:50 -03:00
configure Fix ifunc support with DT_TEXTREL segments (BZ#20480) 2018-09-25 16:27:50 -03:00
configure.ac Fix ifunc support with DT_TEXTREL segments (BZ#20480) 2018-09-25 16:27:50 -03:00
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 Don't build libnsl for new ABIs 2018-09-24 10:23:10 +02:00
libc-abis libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] 2018-07-05 18:06:43 +01:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES stdio-common/tst-printf.c: Remove part under a non-free license [BZ #23363] 2018-07-03 18:29:16 +02:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Don't build libnsl for new ABIs 2018-09-24 10:23:10 +02:00
Makefile Remove leading space from testrun.sh 2018-09-26 10:13:13 +02:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Don't build libnsl for new ABIs 2018-09-24 10:23:10 +02:00
NEWS powerpc: Only enable TLE with PPC_FEATURE2_HTM_NOSC 2018-09-21 10:18:03 -07:00
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 Remove tilegx port. 2018-04-27 19:11:24 +00:00
Rules Add test-in-container infrastructure. 2018-08-22 21:20:37 -04:00
shlib-versions Extend NSS test suite 2017-07-17 15:52:44 -04:00
test-skeleton.c Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
version.h Open master branch for glibc 2.29 development 2018-08-01 01:35:02 -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
	arm-*-linux-gnueabi
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
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	s390-*-linux-gnu
	s390x-*-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
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See the file INSTALL to find out how to configure, build, and install
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found in the `manual/' subdirectory.  The manual is still being updated
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