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glibc/include
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Joseph Myers a292f45acd Add <limits.h> integer width macros. 
TS 18661-1 defines macros for the width of integer types, intended for
use with the fromfp functions to convert from floating-point types to
integer types of any width, in any rounding mode and with control over
whether "inexact" is raised.  Such macros are, of course, more
generally useful than just with those functions.

Those macros are added to <limits.h> and <stdint.h>.  This patch adds
the <limits.h> macros to glibc's header, with the <stdint.h> ones
intended to be added in a separate patch (which would add to the NEWS
entry created by this patch).  I've also added these macros to GCC's
headers for GCC 7, but definitions in glibc's <limits.h> are still
useful for older GCC, for non-GNU compilers and for when it's
_GNU_SOURCE rather than __STDC_WANT_IEC_60559_BFP_EXT__ that implies
the macros should be defined since the GCC header only considers
__STDC_WANT_IEC_60559_BFP_EXT__ (and for glibc systems, the
definitions in GCC's <stdint.h> will only be used with
-ffreestanding).

Tested for x86_64 and x86.

	* include/limits.h: Define
	__GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include
	<bits/libc-header-start.h> instead of including <features.h>.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (CHAR_WIDTH): New macro.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (SCHAR_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (UCHAR_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (SHRT_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (USHRT_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (LONG_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (ULONG_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (LLONG_WIDTH): Likewise.
	[__GLIBC_USE (IEC_60559_BFP_EXT)] (ULLONG_WIDTH): Likewise.
	* manual/lang.texi (Width of Type): Document these macros.
	* stdlib/tst-width.c: New file.
	* stdlib/Makefile (tests): Add tst-width.
2016-09-19 12:25:36 +00:00
..
arpa Fix resolver inet_* namespace (bug 17722). 2014-12-17 18:09:11 +00:00
bits Fix limits.h NL_NMAX namespace (bug 19929). 2016-04-08 22:52:51 +00:00
gnu Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
net Fix resolver if_* namespace (bug 17717). 2014-12-16 18:18:49 +00:00
netinet Fix gethostbyaddr in6addr_any, in6addr_loopback namespace (bug 18532). 2015-06-17 20:08:22 +00:00
programs Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
protocols (abmon): Remove spaces. 1998-11-12 18:03:43 +00:00
rpc Rename bits/libc-tsd.h to libc-tsd.h (bug 14912). 2015-09-03 20:33:46 +00:00
rpcsvc * nis/nis_domain_of.c (__nis_domain_of): New function. 2007-04-19 14:28:01 +00:00
sys Minimize sysdeps code involved in defining major/minor/makedev. 2016-08-03 15:23:04 -04:00
aio.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
aliases.h Remove pre-ISO C support 2012-01-07 23:57:22 -05:00
alloca.h alloca: fix buf interaction 2015-02-24 13:29:40 -05:00
argp.h Update. 2000-12-28 15:08:51 +00:00
argz.h Remove use of INTDEF/INTUSE in intl 2012-05-24 23:08:18 +02:00
assert.h Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
atomic.h Add atomic operations required by the new condition variable. 2016-08-09 12:13:11 +02:00
byteswap.h Update. 1998-04-10 10:52:25 +00:00
caller.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
complex.h conformtest: Fix namespace testing. 2013-09-04 20:47:21 +00:00
cpio.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
ctype.h Rename bits/libc-tsd.h to libc-tsd.h (bug 14912). 2015-09-03 20:33:46 +00:00
des.h Update. 1998-03-24 10:39:42 +00:00
dirent.h Mark internal dirent functions hidden 2015-10-15 14:15:41 -07:00
dlfcn.h Mark _dl_catch_error hidden 2015-10-15 14:13:50 -07:00
elf.h Check supported DF_1_XXX bits 2012-11-21 06:33:19 -08:00
endian.h Update. 2001-03-30 05:34:59 +00:00
envz.h 2002-08-03 Roland McGrath <roland@redhat.com> 2002-08-04 01:28:06 +00:00
err.h * include/sys/syslog.h: Use libc_hidden_proto for syslog, vsyslog. 2002-08-03 12:59:33 +00:00
errno.h Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
error.h Update. 1997-06-21 02:59:26 +00:00
execinfo.h Remove pre-ISO C support 2012-01-07 23:57:22 -05:00
fcntl.h hurd: Do not hide rtld symbols which need to be preempted 2016-03-20 19:51:42 +01:00
features.h Support __STDC_WANT_IEC_60559_FUNCS_EXT__ feature test macro. 2016-08-03 22:21:37 +00:00
fenv.h Mark fegetround pure (bug 16296). 2015-09-15 20:36:50 +00:00
fmtmsg.h Add more headers to include/ for conform tests. 2014-12-11 21:41:30 +00:00
fnmatch.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
fpu_control.h Update. 1999-11-23 17:22:17 +00:00
ftw.h Update. 1997-06-21 02:59:26 +00:00
gconv.h Update. 1997-11-18 02:50:07 +00:00
getopt_int.h Update. 2004-03-09 10:36:53 +00:00
getopt.h Update. 2004-03-09 10:36:53 +00:00
glob.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
gmp.h * include/gmp.h: Include/gmp-mparam.h. * stdlib/strtod.c: Include gmp-mparam.h before gmp.h and gmp-impl.h. 2003-03-14 05:48:18 +00:00
gnu-versions.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
grp-merge.h NSS: Implement group merging support. 2016-04-29 22:18:21 -04:00
grp.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
gshadow.h [BZ #9955] 2009-04-23 18:29:30 +00:00
iconv.h Update. 1999-08-21 00:38:15 +00:00
ifaddrs.h Remove IS_IN_nscd 2014-11-24 11:41:44 +05:30
ifunc-impl-list.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
inline-hashtab.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
langinfo.h Add first fixes for conformtest for POSIX2008 2012-02-26 21:32:56 -05:00
libc-internal.h Use max_align_t from <stddef.h>. 2015-10-29 12:46:22 +00:00
libc-symbols.h malloc: Simplify static malloc interposition [BZ #20432] 2016-08-26 23:20:41 +02:00
libgen.h Update. 1997-06-21 02:59:26 +00:00
libintl.h Remove use of INTDEF/INTUSE in intl 2012-05-24 23:08:18 +02:00
libio.h Rename bits/stdio-lock.h to stdio-lock.h (bug 14912). 2015-09-04 16:21:14 +00:00
limits.h Add <limits.h> integer width macros. 2016-09-19 12:25:36 +00:00
link.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
list.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
locale.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
malloc.h * malloc/malloc.c (_int_free): Second argument is now mchunkptr. 2009-02-07 22:01:49 +00:00
math.h Fix lgamma setting signgam for ISO C (bug 15421). 2015-11-20 22:49:59 +00:00
mcheck.h * include/sys/resource.h: Use libc_hidden_proto for getpriority, 2002-08-04 03:50:21 +00:00
memory.h Update. 1997-06-21 02:59:26 +00:00
mntent.h Remove use of INTUSE/INTDEF in misc. 2012-05-31 13:10:02 +02:00
monetary.h Add first fixes for conformtest for POSIX2008 2012-02-26 21:32:56 -05:00
mqueue.h Fix mq_receive, mq_send mq_timed* namespace (bug 18545). 2015-06-17 20:19:04 +00:00
netdb.h Fix h_errno namespace (bug 18520). 2015-06-12 10:10:18 +00:00
netgroup.h Update. 1997-06-21 02:59:26 +00:00
nl_types.h Update. 1997-12-22 20:53:38 +00:00
nss.h Harden putpwent, putgrent, putspent, putspent against injection [BZ #18724] 2015-10-02 11:34:13 +02:00
nsswitch.h Update. 1997-06-21 02:59:26 +00:00
obstack.h Update. 2002-08-04 09:27:27 +00:00
poll.h Update. 2000-08-21 16:02:48 +00:00
printf.h strfmon_l: Use specified locale for number formatting [BZ #19633] 2016-04-04 15:18:13 +02:00
pthread.h Fix mq_notify pthread_barrier_* namespace (bug 18544). 2015-06-17 20:16:56 +00:00
pty.h Update. 2004-10-24 21:29:41 +00:00
pwd.h Harden putpwent, putgrent, putspent, putspent against injection [BZ #18724] 2015-10-02 11:34:13 +02:00
regex.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
resolv.h Remove NOT_IN_libc 2014-11-24 15:03:45 +05:30
rounding-mode.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sched.h posix: New Linux posix_spawn{p} implementation 2016-03-07 11:53:47 +07:00
scratch_buffer.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
search.h Fix sem_* tdelete, tfind, tsearch, twalk namespace (bug 18536). 2015-06-17 20:11:58 +00:00
set-hooks.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
setjmp.h Mark internal setjmp functions hidden 2015-10-15 14:22:25 -07:00
sgtty.h Update. 1997-06-21 02:59:26 +00:00
shadow.h Remove pre-ISO C support 2012-01-07 23:57:22 -05:00
shlib-compat.h Add support for referencing specific symbol versions 2016-08-02 17:18:08 +02:00
signal.h Mark ld.so internel sigaction functions hidden 2015-10-15 14:23:31 -07:00
spawn.h Update. 2000-10-01 19:15:29 +00:00
stab.h Update. 1997-06-21 02:59:26 +00:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stap-probe.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stdc-predef.h Revert __malloc_initialize_hook symbol poisoning 2016-06-20 11:11:29 +02:00
stdio_ext.h Remove use of INTDEF/INTUSE in libio 2012-05-24 23:06:20 +02:00
stdio.h Provide __libc_fatal for rtld. 2015-07-09 15:32:32 -07:00
stdlib.h Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
string.h Add _STRING_INLINE_unaligned and string_private.h 2016-02-18 14:55:29 -02:00
strings.h Update. 1997-06-21 02:59:26 +00:00
stropts.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
stubs-prologue.h * sysdeps/generic/bits/libc-tsd.h [USE___THREAD]: Conditional 2002-10-11 10:52:20 +00:00
syscall.h Update. 1997-06-21 02:59:26 +00:00
sysexits.h Update. 1997-06-21 02:59:26 +00:00
syslog.h Update. 1997-06-21 02:59:26 +00:00
tar.h Update. 1997-06-21 02:59:26 +00:00
termios.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
tgmath.h Update. 1998-09-06 23:45:24 +00:00
time.h Fix symbol definitions for __clock_* functions 2013-06-11 11:11:11 +05:30
ttyent.h Fix ttyslot namespace (bug 18547). 2015-06-17 20:21:19 +00:00
uchar.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
ucontext.h Update. 1999-10-12 18:17:41 +00:00
ulimit.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
unistd.h posix: New Linux posix_spawn{p} implementation 2016-03-07 11:53:47 +07:00
utime.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
utmp.h Remove pre-ISO C support 2012-01-07 23:57:22 -05:00
values.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wchar.h Use __typeof instead of typeof 2016-06-04 09:19:09 +02:00
wctype.h Fix regex wctype namespace (bug 18495). 2015-06-05 20:04:47 +00:00
wordexp.h First steps to get conformtest fully working 2012-02-25 23:18:39 -05:00
xlocale.h Update. 1997-06-21 02:59:26 +00:00