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Joseph Myers 01f2881245 Make more libm functions into weak aliases.
Many libm functions define the function as __<func> and then define
<func> as a weak alias.  This is not at all limited to cases where
there is an internal call that has namespace reasons to need to call
__<func> instead of <func>.

The common macros for creating libm function aliases work on the basis
of public function names all being aliases; that is, they define
aliases for functions using the above pattern.  Thus, where a function
just defines the public name <func> directly, changing that to be a
weak alias enables a subsequent conversion to the common macros to
retain the exact existing symbols (and so be testable by comparison of
stripped binaries).

This patch converts many existing functions to use the weak alias
pattern, as preparation for subsequent conversions to common macros.
I do expect that _FloatN/_FloatNx function aliases will end up needing
new variants of the common macros that do *not* create the original
float / double / long double name of a function - for cases where that
name is created specially to give it a particular symbol version, for
example - but for functions that can use the most common macros to
create all the public names as aliases, it makes sense for them to do
so.

Regarding the Bessel function wrappers in this patch: only float and
double wrappers are changed because the long double wrappers already
used the weak alias pattern.

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

	* include/math.h (roundeven): Change hidden_proto call to
	__roundeven.
	* math/w_j0_compat.c (j0): Rename to __j0 and define as weak
	alias.
	[NO_LONG_DOUBLE] (__j0l): New strong alias.
	(y0): Rename to __y0 and define as weak alias.
	[NO_LONG_DOUBLE] (__y0l): New strong alias.
	* math/w_j0f_compat.c (j0f): Rename to __j0f and define as weak
	alias.
	(y0f): Rename to __y0f and define as weak alias.
	* math/w_j1_compat.c (j1): Rename to __j1 and define as weak
	alias.
	[NO_LONG_DOUBLE] (__j1l): New strong alias.
	(y1): Rename to __y1 and define as weak alias.
	[NO_LONG_DOUBLE] (__y1l): New strong alias.
	* math/w_j1f_compat.c (j1f): Rename to __j1f and define as weak
	alias.
	(y1f): Rename to __y1f and define as weak alias.
	* math/w_jn_compat.c (jn): Rename to __jn and define as weak
	alias.
	[NO_LONG_DOUBLE] (__jnl): New strong alias.
	(yn): Rename to __yn and define as weak alias.
	[NO_LONG_DOUBLE] (__ynl): New strong alias.
	* math/w_jnf_compat.c (jnf): Rename to __jnf and define as weak
	alias.
	(ynf): Rename to __ynf and define as weak alias.
	* sysdeps/ieee754/dbl-64/s_fromfp.c (FUNC): Define to __fromfp.
	(fromfp): Define as weak alias.
	[NO_LONG_DOUBLE] (__fromfpl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_fromfpx.c (FUNC): Define to __fromfpx.
	(fromfpx): Define as weak alias.
	[NO_LONG_DOUBLE] (__fromfpxl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_getpayload.c (getpayload): Rename to
	__getpayload and define as weak alias.
	[NO_LONG_DOUBLE] (__getpayloadl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_roundeven.c (roundeven): Rename to
	__roundeven and define as weak alias.
	[NO_LONG_DOUBLE] (__roundevenl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_setpayload.c (FUNC): Define to
	__setpayload.
	(setpayload): Define as weak alias.
	[NO_LONG_DOUBLE] (__setpayloadl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_setpayloadsig.c (FUNC): Define to
	__setpayloadsig.
	(setpayloadsig): Define as weak alias.
	[NO_LONG_DOUBLE] (__setpayloadsigl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_totalorder.c (totalorder): Rename to
	__totalorder and define as weak alias.
	[NO_LONG_DOUBLE] (__totalorderl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_totalordermag.c (totalordermag): Rename
	to __totalordermag and define as weak alias.
	[NO_LONG_DOUBLE] (__totalordermagl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_ufromfp.c (FUNC): Define to __ufromfp.
	(ufromfp): Define as weak alias.
	[NO_LONG_DOUBLE] (__ufromfpl): New strong alias.
	* sysdeps/ieee754/dbl-64/s_ufromfpx.c (FUNC): Define to
	__ufromfpx.
	(ufromfpx): Define as weak alias.
	[NO_LONG_DOUBLE] (__ufromfpxl): New strong alias.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_getpayload.c (getpayload):
	Rename to __getpayload and define as weak alias.
	[NO_LONG_DOUBLE] (__getpayloadl): New strong alias.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_roundeven.c (roundeven):
	Rename to __roundeven and define as weak alias.
	[NO_LONG_DOUBLE] (__roundevenl): New strong alias.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c (totalorder):
	Rename to __totalorder and define as weak alias.
	[NO_LONG_DOUBLE] (__totalorderl): New strong alias.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_totalordermag.c
	(totalordermag): Rename to __totalordermag and define as weak
	alias.
	[NO_LONG_DOUBLE] (__totalordermagl): New strong alias.
	* sysdeps/ieee754/float128/float128_private.h (__getpayloadl): New
	macro.
	(__roundevenl): Likewise.
	(__totalorderl): Likewise.
	(__totalordermagl): Likewise
	* sysdeps/ieee754/float128/s_fromfpf128.c (FUNC): Define to
	__fromfpf128.
	(fromfpf128): Define as weak alias.
	* sysdeps/ieee754/float128/s_fromfpxf128.c (FUNC): Define to
	__fromfpxf128.
	(fromfpxf128): Define as weak alias.
	* sysdeps/ieee754/float128/s_setpayloadf128.c (FUNC): Define to
	__setpayloadf128.
	(setpayloadf128): Define as weak alias.
	* sysdeps/ieee754/float128/s_setpayloadsigf128.c (FUNC): Define to
	__setpayloadsigf128.
	(setpayloadsigf128): Define as weak alias.
	* sysdeps/ieee754/float128/s_ufromfpf128.c (FUNC): Define to
	__ufromfpf128.
	(ufromfpf128): Define as weak alias.
	* sysdeps/ieee754/float128/s_ufromfpxf128.c (FUNC): Define to
	__ufromfpxf128.
	(ufromfpxf128): Define as weak alias.
	* sysdeps/ieee754/flt-32/s_fromfpf.c (FUNC): Define to __fromfpf.
	(fromfpf): Define as weak alias.
	* sysdeps/ieee754/flt-32/s_fromfpxf.c (FUNC): Define to
	__fromfpxf.
	(fromfpxf): Define as weak alias.
	* sysdeps/ieee754/flt-32/s_getpayloadf.c (getpayloadf): Rename to
	__getpayloadf and define as weak alias.
	* sysdeps/ieee754/flt-32/s_roundevenf.c (roundevenf): Rename to
	__roundevenf and define as weak alias.
	* sysdeps/ieee754/flt-32/s_setpayloadf.c (FUNC): Define to
	__setpayloadf.
	(setpayloadf): Define as weak alias.
	* sysdeps/ieee754/flt-32/s_setpayloadsigf.c (FUNC): Define to
	__setpayloadsigf.
	(setpayloadsigf): Define as weak alias.
	* sysdeps/ieee754/flt-32/s_totalorderf.c (totalorderf): Rename to
	__totalorderf and define as weak alias.
	* sysdeps/ieee754/flt-32/s_totalordermagf.c (totalordermagf):
	Rename to __totalordermagf and define as weak alias.
	* sysdeps/ieee754/flt-32/s_ufromfpf.c (FUNC): Define to
	__ufromfpf.
	(ufromfpf): Define as weak alias.
	* sysdeps/ieee754/flt-32/s_ufromfpxf.c (FUNC): Define to
	__ufromfpxf.
	(ufromfpxf): Define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_fromfpl.c (FUNC): Define to
	__fromfpl.
	(fromfpl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_fromfpxl.c (FUNC): Define to
	__fromfpxl.
	(fromfpxl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_getpayloadl.c (getpayloadl): Rename
	to __getpayloadl and define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_roundevenl.c (roundevenl): Rename to
	__roundevenl and define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_setpayloadl.c (FUNC): Define to
	__setpayloadl.
	(setpayloadl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_setpayloadsigl.c (FUNC): Define to
	__setpayloadsigl.
	(setpayloadsigl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_totalorderl.c (totalorderl): Rename
	to __totalorderl and define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_totalordermagl.c (totalordermagl):
	Rename to __totalordermagl and define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_ufromfpl.c (FUNC): Define to
	__ufromfpl.
	(ufromfpl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128/s_ufromfpxl.c (FUNC): Define to
	__ufromfpxl.
	(ufromfpxl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_fromfpl.c (FUNC): Define to
	__fromfpl.
	(fromfpl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_fromfpxl.c (FUNC): Define to
	__fromfpxl.
	(fromfpxl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_getpayloadl.c (getpayloadl):
	Rename to __getpayloadl and define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_roundevenl.c (roundevenl): Rename
	to __roundevenl and define as weak alias.  Call __roundeven
	instead of roundeven.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadl.c (FUNC): Define to
	__setpayloadl.
	(setpayloadl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_setpayloadsigl.c (FUNC): Define to
	__setpayloadsigl.
	(setpayloadsigl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_totalorderl.c (totalorderl):
	Rename to __totalorderl and define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_totalordermagl.c (totalordermagl):
	Rename to __totalordermagl and define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_ufromfpl.c (FUNC): Define to
	__ufromfpl.
	(ufromfpl): Define as weak alias.
	* sysdeps/ieee754/ldbl-128ibm/s_ufromfpxl.c (FUNC): Define to
	__ufromfpxl.
	(ufromfpxl): Define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_fromfpl.c (FUNC): Define to
	__fromfpl.
	(fromfpl): Define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_fromfpxl.c (FUNC): Define to
	__fromfpxl.
	(fromfpxl): Define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_getpayloadl.c (getpayloadl): Rename to
	__getpayloadl and define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_roundevenl.c (roundevenl): Rename to
	__roundevenl and define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_setpayloadl.c (FUNC): Define to
	__setpayloadl.
	(setpayloadl): Define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_setpayloadsigl.c (FUNC): Define to
	__setpayloadsigl.
	(setpayloadsigl): Define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_totalorderl.c (totalorderl): Rename to
	__totalorderl and define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_totalordermagl.c (totalordermagl):
	Rename to __totalordermagl and define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_ufromfpl.c (FUNC): Define to
	__ufromfpl.
	(ufromfpl): Define as weak alias.
	* sysdeps/ieee754/ldbl-96/s_ufromfpxl.c (FUNC): Define to
	__ufromfpxl.
	(ufromfpxl): Define as weak alias.
2017-09-14 22:28:53 +00:00
ChangeLog.old Move all old ChangeLogs to a top-level ChangeLog.old directory. 2017-09-01 09:31:43 -04:00
argp Remove __need macros from errno.h (__need_Emath, __need_error_t). 2017-06-14 08:14:34 -04:00
assert Fix position of tests-unsupported definition in assert/Makefile. 2017-08-22 00:30:51 +00:00
benchtests benchtests: Reallocate buffers for memset 2017-09-14 22:54:24 +05:30
bits Simplify NAN definitions. 2017-08-31 16:39:25 +00:00
catgets Don't compile non-lib modules as lib modules [BZ #21864] 2017-08-21 05:34:54 -07:00
conform Fix mcontext_t sigcontext namespace (bug 21457). 2017-08-30 22:02:04 +00:00
crypt Add missing header files throughout the testsuite. 2017-02-16 17:33:18 -05:00
csu Remove Roland McGrath/Ulrich Drepper et al. from DSO banner 2017-09-01 10:09:21 -07:00
ctype Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
debug Fix pcprofiledump cross-endian condition (bug 22086). 2017-09-05 15:14:09 +00:00
dev Rename xlocale.h to bits/types/__locale_t.h. 2017-06-20 20:28:11 -04:00
dirent dirent: Remove internal_function attribute 2017-08-31 16:02:40 +02:00
dlfcn dlfcn: Remove internal_function attribute 2017-08-31 16:12:03 +02:00
elf Fix $(error) use in Makefile 2017-09-10 17:39:39 +02:00
gmon gmon: Remove internal_function attribute 2017-08-31 16:16:07 +02:00
gnulib Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
grp Remove compat from DEFAULT_CONFIG lookup strings 2017-09-12 10:21:48 -07:00
gshadow Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
hesiod Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
hurd hurd: fix gethostname(NULL, 0) 2017-09-07 00:51:17 +02:00
iconv iconv, intl, locale, wcsmbs: Remove internal_function 2017-08-31 15:59:06 +02:00
iconvdata Add new codepage charmaps/IBM858 [BZ #21084] 2017-09-14 15:50:57 +02:00
include Make more libm functions into weak aliases. 2017-09-14 22:28:53 +00:00
inet inet: Remove internal_function attribute 2017-08-31 18:52:00 +02:00
intl iconv, intl, locale, wcsmbs: Remove internal_function 2017-08-31 15:59:06 +02:00
io Hide __chmod and __mkdir [BZ #18822] 2017-09-04 13:38:51 -07:00
libidn Move all old ChangeLogs to a top-level ChangeLog.old directory. 2017-09-01 09:31:43 -04:00
libio Finish change from “Bengali” to “Bangla” 2017-09-09 12:41:54 +02:00
locale Finish change from “Bengali” to “Bangla” 2017-09-09 12:41:54 +02:00
localedata Add new codepage charmaps/IBM858 [BZ #21084] 2017-09-14 15:50:57 +02:00
login Consolidate remaning non cancellable definitions 2017-08-23 10:47:03 -03:00
mach hurd: Remove duplicate symbol version 2017-08-28 14:19:55 +02:00
malloc Sync scratch_buffer with gnulib 2017-09-08 15:51:34 +02:00
manual Remove compat from DEFAULT_CONFIG lookup strings 2017-09-12 10:21:48 -07:00
math Make more libm functions into weak aliases. 2017-09-14 22:28:53 +00:00
mathvec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
misc hurd: Fix build ot misc/tst-preadvwritev2-common.c 2017-09-03 17:51:15 +02:00
nis Consistently use uintN_t not u_intN_t everywhere. 2017-08-07 19:55:34 +00:00
nptl Remove Roland McGrath/Ulrich Drepper et al. from DSO banner 2017-09-01 10:09:21 -07:00
nptl_db Move all old ChangeLogs to a top-level ChangeLog.old directory. 2017-09-01 09:31:43 -04:00
nscd Remove compat from DEFAULT_CONFIG lookup strings 2017-09-12 10:21:48 -07:00
nss Remove compat from DEFAULT_CONFIG lookup strings 2017-09-12 10:21:48 -07:00
po Update translations 2017-09-11 05:50:49 +05:30
posix hurd: Fix build without NO_HIDDEN 2017-09-12 01:34:19 +02:00
pwd Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
resolv Use "static const char domain[] =" 2017-09-07 13:57:15 -07:00
resource Define struct rusage in sys/wait.h when required (bug 21575). 2017-06-19 11:59:19 +00:00
rt aio: Remove internal_function function attribute 2017-08-31 15:59:06 +02:00
scripts Use MPFR 3.1.6 in build-many-glibcs.py. 2017-09-07 14:50:32 +00:00
setjmp Remove __need macros from signal.h. 2017-05-20 19:04:43 -04:00
shadow Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
signal Fix sigval namespace (bug 21944). 2017-08-16 20:33:59 +00:00
socket __opensock: Remove internal_function attribute 2017-08-17 10:18:15 +02:00
soft-fp Narrowing the visibility of libc-internal.h even further. 2017-03-01 20:33:46 -05:00
stdio-common linux: Implement tmpfile with O_TMPFILE (BZ#21530) 2017-09-01 09:52:47 -03:00
stdlib 2017-09-01 Paul Pluzhnikov <ppluzhnikov@google.com> 2017-09-01 11:35:55 -07:00
streams Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
string string/stratcliff.c: Replace int with size_t [BZ #21982] 2017-08-23 08:23:02 -07:00
sunrpc sunrpc/tst-udp-nonblocking: Fix timeout value 2017-09-10 21:09:28 +02:00
support support_chroot_create: Add support for /etc/hosts, /etc/host.conf 2017-09-01 08:58:07 +02:00
sysdeps Make more libm functions into weak aliases. 2017-09-14 22:28:53 +00:00
sysvipc Fix test-sysvsem on some platforms 2017-01-02 18:53:50 -02:00
termios Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
time time: Remove the internal_function attribute 2017-08-31 15:59:07 +02:00
timezone zic: Use PRIdMAX to print line numbers 2017-07-25 12:34:14 +05:30
wcsmbs iconv, intl, locale, wcsmbs: Remove internal_function 2017-08-31 15:59:06 +02:00
wctype Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
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ChangeLog Make more libm functions into weak aliases. 2017-09-14 22:28:53 +00:00
INSTALL Update contributors and latest gcc and binutils versions 2017-08-02 18:22:58 +05:30
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MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Support mcount/gprof test with GCC defaulting to PIE 2017-08-17 04:56:01 -07:00
Makefile Suppress internal declarations for most of the testsuite. 2017-05-11 19:27:59 -04:00
Makefile.in
Makerules Place $(elf-objpfx)sofini.os last [BZ #22051] 2017-08-31 06:28:46 -07:00
NEWS Obsolete pow10 functions. 2017-09-01 21:13:18 +00:00
README Require Linux kernel 3.2 or later on x86 / x86_64. 2017-05-08 10:45:20 +00:00
Rules Suppress internal declarations for most of the testsuite. 2017-05-11 19:27:59 -04:00
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 gmon: Add test for basic mcount/gprof functionality 2017-08-15 15:49:45 +02:00
config.h.in i386: Do not set internal_function 2017-08-14 15:08:48 +02:00
config.make.in gmon: Add test for basic mcount/gprof functionality 2017-08-15 15:49:45 +02:00
configure gmon: Add test for basic mcount/gprof functionality 2017-08-15 15:49:45 +02:00
configure.ac Check linker support for INSERT in linker script 2017-08-04 12:17:30 -07:00
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
libc-abis
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
o-iterator.mk
shlib-versions Extend NSS test suite 2017-07-17 15:52:44 -04:00
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version.h Open master for development 2017-08-02 19:23:16 +05:30

README

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

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