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glibc/manual
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Joseph Myers bb8081f57f Add iszero. 
TS 18661-1 adds an iszero classification macro to <math.h>.  This
patch implements it for glibc.  There are no new underlying functions
in libm because the implementation uses fpclassify when sNaN support
is required and a direct comparison otherwise; any optimizations for
this macro should be done through adding __builtin_iszero in GCC and
using it in the header for suitable GCC versions, not through adding
other optimized inline or out-of-line versions to glibc.

Tested for x86_64 and x86.

	* math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (iszero): New
	macro.
	* math/libm-test.inc (iszero_test_data): New array.
	(iszero_test): New function.
	(main): Call iszero_test.
	* manual/arith.texi (Floating Point Classes): Document iszero.
	* manual/libm-err-tab.pl: Update comment on interfaces without
	ulps tabulated.
2016-09-23 21:54:21 +00:00
..
examples glob: Simplify the interface for the GLOB_ALTDIRFUNC callback gl_readdir 2016-04-29 09:35:30 +02:00
argp.texi manual/argp.texi (Specifying Argp Parsers): Fix typo. 2015-10-14 11:49:58 -04:00
arith.texi Add iszero. 2016-09-23 21:54:21 +00:00
charset.texi manual: fix typos in character set handling 2016-06-16 00:45:37 -04:00
check-safety.sh Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
conf.texi
contrib.texi manual: fix spelling typos 2016-06-16 00:59:57 -04:00
creature.texi Support __STDC_WANT_IEC_60559_FUNCS_EXT__ feature test macro. 2016-08-03 22:21:37 +00:00
crypt.texi manual: fix spelling typos 2016-06-16 00:59:57 -04:00
ctype.texi manual: fix typos in the character handling chapter 2016-06-16 00:37:44 -04:00
debug.texi
dir
errno.texi manual: fix typos in error reporting 2016-05-19 23:25:06 -04:00
fdl-1.3.texi
filesys.texi manual: fix spelling typos 2016-06-16 00:59:57 -04:00
freemanuals.texi
getopt.texi
header.texi
install-plain.texi
install.texi 2016-06-05 Paul Pluzhnikov <ppluzhnikov@google.com> 2016-06-05 08:41:13 -07:00
intro.texi manual: fix typo in the introduction 2016-05-19 23:22:59 -04:00
io.texi
ipc.texi
job.texi ctermid: return string literal, document MT-Safety pitfall 2014-11-21 02:16:02 -02:00
lang.texi Add <stdint.h> integer width macros. 2016-09-21 17:06:36 +00:00
lgpl-2.1.texi
libc-texinfo.sh Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
libc.texinfo Fix doc quoting problems with Texinfo 5 2016-01-10 00:20:51 -08:00
libcbook.texi
libdl.texi
libm-err-tab.pl Add iszero. 2016-09-23 21:54:21 +00:00
llio.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
locale.texi manual: fix spelling typos 2016-06-16 00:59:57 -04:00
macros.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
maint.texi
Makefile Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
math.texi Support __STDC_WANT_IEC_60559_FUNCS_EXT__ feature test macro. 2016-08-03 22:21:37 +00:00
memory.texi manual: fix typos in the memory chapter 2016-06-16 00:33:53 -04:00
message.texi manual: fix typos in the message chapter 2016-06-16 01:14:32 -04:00
nss.texi manual: Clarify NSS error reporting 2016-09-23 14:18:09 +02:00
nsswitch.texi
pattern.texi manual: fix typos in the pattern chapter 2016-06-16 01:34:38 -04:00
pipe.texi
platform.texi PowerPC: Extend Program Priority Register support 2015-08-19 17:43:26 -03:00
probes.texi
process.texi Remove union wait [BZ #19613] 2016-04-14 08:54:57 +02:00
resource.texi Fix typo in manual. 2014-06-05 01:13:04 +02:00
search.texi manual: fix typos in the search chapter 2016-06-16 01:24:16 -04:00
setjmp.texi manual/setjmp.texi: Clarify setcontext and signal handlers text 2014-04-17 11:40:36 +01:00
signal.texi Fix crossreference to nonexistent node BSD Handler 2014-11-18 11:19:20 +01:00
socket.texi
startup.texi
stdio-fp.c
stdio.texi Split large string section; add truncation advice 2015-12-10 08:29:30 -08:00
string.texi manual: Clarify the documentation of strverscmp [BZ #20524] 2016-09-21 15:41:17 +02:00
summary.awk Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sysinfo.texi Make obsolete syscall wrappers into compat symbols (bug 18472). 2015-12-14 22:52:15 +00:00
syslog.texi
terminal.texi
texinfo.tex Update miscellaneous files from upstream sources. 2016-01-05 18:04:06 +00:00
texis.awk
threads.texi Remove CPU set size checking from affinity functions [BZ #19143] 2015-11-24 17:21:01 +01:00
time.texi * manual/time.texi (TZ Variable): glibc no longer comes with tzdata. 2015-02-16 15:32:34 -08:00
tsort.awk Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00
users.texi manual: cuserid is mtasurace if not passed a string 2014-11-21 02:15:09 -02:00
xtract-typefun.awk Make shebang interpreter directives consistent 2016-01-07 04:03:21 -05:00