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Gabriel F. T. Gomes c85e54ac6c Provide a C++ version of iseqsig (bug 22377)
In C++ mode, __MATH_TG cannot be used for defining iseqsig, because
__MATH_TG relies on __builtin_types_compatible_p, which is a C-only
builtin.  This is true when float128 is provided as an ABI-distinct type
from long double.

Moreover, the comparison macros from ISO C take two floating-point
arguments, which need not have the same type.  Choosing what underlying
function to call requires evaluating the formats of the arguments, then
selecting which is wider.  The macro __MATH_EVAL_FMT2 provides this
information, however, only the type of the macro expansion is relevant
(actually evaluating the expression would be incorrect).

This patch provides a C++ version of iseqsig, in which only the type of
__MATH_EVAL_FMT2 (__typeof or decltype) is used as a template parameter
for __iseqsig_type.  This function calls the appropriate underlying
function.

Tested for powerpc64le and x86_64.

	[BZ #22377]
	* math/Makefile [C++] (tests): Add test for iseqsig.
	* math/math.h [C++] (iseqsig): New implementation, which does
	not rely on __MATH_TG/__builtin_types_compatible_p.
	* math/test-math-iseqsig.cc: New file.
	* sysdeps/powerpc/powerpc64le/Makefile
	(CFLAGS-test-math-iseqsig.cc): New variable.
2017-12-19 23:26:59 -02:00
argp Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
assert Fix position of tests-unsupported definition in assert/Makefile. 2017-08-22 00:30:51 +00:00
benchtests Convert strcmp benchmark output to json format 2017-12-15 02:31:41 +05:30
bits Linux/x86: Update cancel_jmp_buf to match __jmp_buf_tag [BZ #22563] 2017-12-19 02:44:04 -08:00
catgets Don't compile non-lib modules as lib modules [BZ #21864] 2017-08-21 05:34:54 -07:00
ChangeLog.old Add missing reference to bug 21654 2017-10-07 13:14:36 +02:00
conform Fix mcontext_t sigcontext namespace (bug 21457). 2017-08-30 22:02:04 +00:00
crypt Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
csu Add --enable-static-pie configure option to build static PIE [BZ #19574] 2017-12-15 17:12:14 -08:00
ctype Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
debug Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
dev Rename xlocale.h to bits/types/__locale_t.h. 2017-06-20 20:28:11 -04:00
dirent Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
dlfcn ld.so: Examine GLRO to detect inactive loader [BZ #20204] 2017-12-18 20:04:13 +01:00
elf elf: remove redundant __libc_enable_secure check from fillin_rpath 2017-12-19 21:53:11 +00:00
gmon Replece LDFLAGS-* = $(no-pie-ldflag) with tst-*-no-pie = yes [BZ #22630] 2017-12-19 13:53:11 -08:00
gnulib Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
grp Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
gshadow Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
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 Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
iconvdata Add new codepage charmaps/IBM858 [BZ #21084] 2017-09-14 15:50:57 +02:00
include Properly compute offsets of note descriptor and next note [BZ #22370] 2017-11-28 09:57:00 -08:00
inet Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
intl Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
io Fix testing with read-only source directory. 2017-12-15 22:37:17 +00:00
libidn Remove add-ons mechanism. 2017-10-05 15:58:13 +00:00
libio ld.so: Examine GLRO to detect inactive loader [BZ #20204] 2017-12-18 20:04:13 +01:00
locale Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
localedata lt_LT locale: Base collation on copy "iso14651_t1" [BZ #22524] 2017-12-07 15:38:11 +01:00
login Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
mach hurd: Remove duplicate symbol version 2017-08-28 14:19:55 +02:00
malloc Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
manual Document that --enable-static-pie implies PIE 2017-12-19 13:51:16 -08:00
math Provide a C++ version of iseqsig (bug 22377) 2017-12-19 23:26:59 -02:00
mathvec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
misc Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
nis nss: Export nscd hash function as __nss_hash [BZ #22459] 2017-11-23 14:08:11 +01:00
nptl Linux/x86: Update cancel_jmp_buf to match __jmp_buf_tag [BZ #22563] 2017-12-19 02:44:04 -08:00
nptl_db Move all old ChangeLogs to a top-level ChangeLog.old directory. 2017-09-01 09:31:43 -04:00
nscd Fix nscd readlink argument aliasing (bug 22446). 2017-12-18 18:50:40 +00:00
nss nss: Export nscd hash function as __nss_hash [BZ #22459] 2017-11-23 14:08:11 +01:00
po Do not build .mo files in source directory (bug 14121). 2017-12-15 14:27:20 +00:00
posix glob: Silence warning about void pointer arithmetic 2017-12-19 15:52:12 -02:00
pwd Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
resolv Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
resource Hide internal __setrlimit function [BZ #18822] 2017-10-01 17:46:54 -07:00
rt Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
scripts Add --enable-static-pie variants to x86_64, x32 and i686 2017-12-18 18:11:47 -08:00
setjmp x86: Make a space in jmpbuf for shadow stack pointer 2017-11-30 04:58:01 -08:00
shadow Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
signal Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
socket __opensock: Remove internal_function attribute 2017-08-17 10:18:15 +02:00
soft-fp Add sysdeps/ieee754/soft-fp. 2017-12-12 23:35:21 +00:00
stdio-common Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
stdlib Fix testing with read-only source directory. 2017-12-15 22:37:17 +00:00
streams Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
string Disable strncat test array-bounds warnings for GCC 8. 2017-12-18 22:52:41 +00:00
sunrpc Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
support support: Simplify compiling most of support/ outside of glibc 2017-12-14 13:48:56 +01:00
sysdeps Provide a C++ version of iseqsig (bug 22377) 2017-12-19 23:26:59 -02:00
sysvipc Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
termios Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
time Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
timezone Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
wcsmbs Replace = with += in CFLAGS-xxx.c/CPPFLAGS-xxx.c 2017-12-11 13:11:33 -08:00
wctype Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
.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 gmon: Add test for basic mcount/gprof functionality 2017-08-15 15:49:45 +02:00
ChangeLog Provide a C++ version of iseqsig (bug 22377) 2017-12-19 23:26:59 -02:00
config.h.in Add --enable-static-pie configure option to build static PIE [BZ #19574] 2017-12-15 17:12:14 -08:00
config.make.in Pass -no-pie to GCC only if GCC defaults to PIE [BZ #22614] 2017-12-18 12:24:38 -08:00
configure Pass -no-pie to GCC only if GCC defaults to PIE [BZ #22614] 2017-12-18 12:24:38 -08:00
configure.ac Pass -no-pie to GCC only if GCC defaults to PIE [BZ #22614] 2017-12-18 12:24:38 -08:00
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 Split locale generation snippet into a separate file 2015-05-13 13:05:28 +05:30
INSTALL Document that --enable-static-pie implies PIE 2017-12-19 13:51:16 -08:00
libc-abis A few more archs have IFUNC support. 2010-03-17 02:43:12 -07:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Expand LICENSES file. 2012-12-05 21:56:15 +00:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Replece LDFLAGS-* = $(no-pie-ldflag) with tst-*-no-pie = yes [BZ #22630] 2017-12-19 13:53:11 -08:00
Makefile Remove add-ons mechanism. 2017-10-05 15:58:13 +00:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Use newly built crt*.o files to build shared objects [BZ #22362] 2017-11-06 08:29:57 -08:00
NEWS Update NEWS with aarch64 static pie support 2017-12-18 16:57:07 +00:00
o-iterator.mk
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
shlib-versions Extend NSS test suite 2017-07-17 15:52:44 -04:00
test-skeleton.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
version.h version.h: Switch to ".9000" as the suffix for the development version 2017-10-16 21:39:18 +02:00

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