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Joseph Myers f778723496 Use long double not double for _Float64 with old GCC if values the same.
If double, long double and _Float64 all have the same set of values,
TS 18661-3 requires the usual arithmetic conversions on long double
and _Float64 to produce _Float64.  For this to be the case when
building with a compiler without a distinct _Float64 type, _Float64
must be a typedef for long double, not for double.  (_Float32x,
however, must be double in such a case, not long double, because the
usual arithmetic conversions on _Float32x and double must produce
double.)

This patch adjusts the fallback definition of _Float64 and associated
macros accordingly in that case, to fix the build of test-tgmath3 with
GCC 6 for such a configuration.  Tested in conjunction with _Float64
changes with build-many-glibcs.py for arm-linux-gnueabi, to make sure
the issue with test-tgmath3 is fixed.  Also tested for x86_64.

	* bits/floatn-common.h: Include <bits/long-double.h>.
	[__HAVE_FLOAT64 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus)
	&& __NO_LONG_DOUBLE_MATH] (__f64): Use suffix 'l'.
	[__HAVE_FLOAT64 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus)
	&& __NO_LONG_DOUBLE_MATH] (__CFLOAT64): Use _Complex long double.
	[__HAVE_FLOAT64 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus)
	&& __NO_LONG_DOUBLE_MATH] (_Float64): Use long double.
	[__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH]
	(__builtin_huge_valf64): Use __builtin_huge_vall.
	[__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH]
	(__builtin_inff64): Use __builtin_infl.
	[__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH]
	(__builtin_nanf64): Use __builtin_nanl.
	[__HAVE_FLOAT64 && !__GNUC_PREREQ (7, 0) && __NO_LONG_DOUBLE_MATH]
	(__builtin_nansf64): Use __builtin_nansl.
2017-12-05 21:52:15 +00:00
argp Mark internal argp functions with attribute_hidden [BZ #18822] 2017-10-01 15:10:27 -07:00
assert Fix position of tests-unsupported definition in assert/Makefile. 2017-08-22 00:30:51 +00:00
benchtests benchtests: Enable BENCHSET to run subset of tests 2017-11-28 19:57:46 +05:30
bits Use long double not double for _Float64 with old GCC if values the same. 2017-12-05 21:52:15 +00:00
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 Prefer https for Sourceware links 2017-11-16 11:49:26 +05:30
csu Use newly built crt*.o files to build shared objects [BZ #22362] 2017-11-06 08:29:57 -08:00
ctype Use locale_t, not __locale_t, throughout glibc 2017-06-20 20:30:06 -04:00
debug x86: Make a space in jmpbuf for shadow stack pointer 2017-11-30 04:58:01 -08:00
dev Rename xlocale.h to bits/types/__locale_t.h. 2017-06-20 20:28:11 -04:00
dirent hurd: Fix dirfd symbol exposition from ftw 2017-09-28 00:49:05 +02:00
dlfcn Prefer https for Sourceware links 2017-11-16 11:49:26 +05:30
elf Add elision tunables 2017-12-05 17:48:48 -02:00
gmon Add a test for profiling static executable 2017-10-14 12:58:55 -07:00
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 localedef: Add --no-warnings/--warnings option 2017-10-25 13:36:54 -07:00
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 Hide internal idna functions [BZ #18822] 2017-10-01 17:33:22 -07:00
intl intl: create target directory for bison 2017-12-01 15:15:16 +01:00
io Assume that _DIRENT_HAVE_D_TYPE is always defined. 2017-10-30 15:48:33 +01:00
libidn Remove add-ons mechanism. 2017-10-05 15:58:13 +00:00
libio Always do locking when iterating over list of streams (bug 15142) 2017-10-05 17:26:05 +02:00
locale Assume that _DIRENT_HAVE_D_TYPE is always defined. 2017-10-30 15:48:33 +01:00
localedata et_EE locale: Base collation on iso14651_t1 [BZ #22517] 2017-12-05 17:10:08 +01:00
login openpty: use TIOCGPTPEER to open slave side fd 2017-10-08 17:47:58 +02:00
mach hurd: Remove duplicate symbol version 2017-08-28 14:19:55 +02:00
malloc Fix integer overflow in malloc when tcache is enabled [BZ #22375] 2017-11-30 13:42:53 +01:00
manual Add elision tunables 2017-12-05 17:48:48 -02:00
math Add headers for _Float64, _Float32x testing. 2017-12-05 17:34:25 +00:00
mathvec Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
misc The -Wstringop-truncation option new in GCC 8 detects common misuses 2017-11-15 17:39:59 -07:00
nis nss: Export nscd hash function as __nss_hash [BZ #22459] 2017-11-23 14:08:11 +01:00
nptl Add elision tunables 2017-12-05 17:48:48 -02:00
nptl_db Move all old ChangeLogs to a top-level ChangeLog.old directory. 2017-09-01 09:31:43 -04:00
nscd nss: Export nscd hash function as __nss_hash [BZ #22459] 2017-11-23 14:08:11 +01:00
nss nss: Export nscd hash function as __nss_hash [BZ #22459] 2017-11-23 14:08:11 +01:00
po Update translations from the Translation Project 2017-11-03 23:30:23 +00:00
posix posix: Make tst-getaddrinfo[45] xtests due to DNS dependency [BZ #20826] 2017-11-28 12:20:01 +01:00
pwd Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
resolv Obsolete p_secstodate. 2017-11-22 22:21:10 +00:00
resource Hide internal __setrlimit function [BZ #18822] 2017-10-01 17:46:54 -07:00
rt aio: Remove internal_function function attribute 2017-08-31 15:59:06 +02:00
scripts Remove scripts/update-copyrights handling of intl/plural.c. 2017-11-30 21:25:25 +00:00
setjmp x86: Make a space in jmpbuf for shadow stack pointer 2017-11-30 04:58:01 -08:00
shadow Remove __need macros from stdio.h and wchar.h. 2017-06-08 13:58:17 -04:00
signal sigwait: Do not fail with EINTR and return error code [BZ #22478] 2017-11-23 11:20:53 +01:00
socket __opensock: Remove internal_function attribute 2017-08-17 10:18:15 +02:00
soft-fp Use libm_alias_* in soft-fp. 2017-10-11 00:03:46 +00:00
stdio-common Prefer https for Sourceware links 2017-11-16 11:49:26 +05:30
stdlib Support defining strtof64, strtof32x, wcstof64, wcstof32x aliases. 2017-12-05 18:31:53 +00:00
streams Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
string Fix string/tester.c build with GCC 8. 2017-11-14 17:52:26 +00:00
sunrpc Prefer https for Sourceware links 2017-11-16 11:49:26 +05:30
support Linux: Implement interfaces for memory protection keys 2017-12-05 15:20:35 +01:00
sysdeps Add elision tunables 2017-12-05 17:48:48 -02:00
sysvipc Fix test-sysvsem on some platforms 2017-01-02 18:53:50 -02:00
termios Hide internal __tcgetattr function [BZ #18822] 2017-10-01 17:48:24 -07:00
time time: Remove the internal_function attribute 2017-08-31 15:59:07 +02:00
timezone timezone: pacify GCC -Wstringop-truncation 2017-11-12 22:00:28 -08:00
wcsmbs Add _Float64x function aliases. 2017-11-27 14:16:47 +00:00
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
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 Use long double not double for _Float64 with old GCC if values the same. 2017-12-05 21:52:15 +00:00
config.h.in Add elision tunables 2017-12-05 17:48:48 -02:00
config.make.in Add elision tunables 2017-12-05 17:48:48 -02:00
configure Add elision tunables 2017-12-05 17:48:48 -02:00
configure.ac Add elision tunables 2017-12-05 17:48:48 -02:00
COPYING
COPYING.LIB
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
INSTALL Add elision tunables 2017-12-05 17:48:48 -02:00
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
LICENSES
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Add a test for profiling static executable 2017-10-14 12:58:55 -07:00
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 Linux: Implement interfaces for memory protection keys 2017-12-05 15:20:35 +01:00
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

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
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In GNU/Hurd systems, it works with a microkernel and Hurd servers.

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When working with Linux kernels, this version of the GNU C Library
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