glibc/sysdeps/generic
Joseph Myers 6f9a3dd8b8 Move LDBL_CLASSIFY_COMPAT to its own header.
The general rule in glibc is that it's better for a macro to be always
defined, and tested with #if, than for it to be tested with #ifdef,
because the latter is prone to typos in the macro name as well as to
the header with the macro accidentally not being included in a file
testing it.  (Testing with an "if" statement is even better, in those
cases where it's possible to do things that way, as it then means both
cases in the code get checked for syntax in glibc builds with either
value of the condition.)

math_private.h has several different groups of macros, meaning that
architectures wanting to override some of them need to define those
then include the generic version, which then defines macros if not
already defined.  It's hard to avoid that arrangement completely, but
various cases can be improved by splitting out macros or groups of
macros into separate files.

This patch splits out the LDBL_CLASSIFY_COMPAT macro into a separate
ldbl-classify-compat.h header.  This macro is tested with #ifdef; this
patch changes it to testing with #if, with a default definition to 0
in the generic header and then architecture-specific headers defining
it to 1.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by the patch.

	* sysdeps/generic/ldbl-classify-compat.h: New file.
	* sysdeps/arm/ldbl-classify-compat.h: Likewise.
	* sysdeps/m68k/coldfire/ldbl-classify-compat.h: Likewise.
	* sysdeps/microblaze/ldbl-classify-compat.h: Likewise.
	* sysdeps/mips/ldbl-classify-compat.h: Likewise.
	* sysdeps/nios2/ldbl-classify-compat.h: Likewise.
	* sysdeps/sh/ldbl-classify-compat.h: Likewise.
	* sysdeps/ieee754/dbl-64/s_finite.c: Include
	<ldbl-classify-compat.h>.
	[LDBL_CLASSIFY_COMPAT]: Test value, not whether defined.
	* sysdeps/ieee754/dbl-64/s_isinf.c: Include
	<ldbl-classify-compat.h>.
	[LDBL_CLASSIFY_COMPAT]: Test value, not whether defined.
	* sysdeps/ieee754/dbl-64/s_isnan.c: Include
	<ldbl-classify-compat.h>.
	[LDBL_CLASSIFY_COMPAT]: Test value, not whether defined.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c: Include
	<ldbl-classify-compat.h>.
	[LDBL_CLASSIFY_COMPAT]: Test value, not whether defined.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c: Include
	<ldbl-classify-compat.h>.
	[LDBL_CLASSIFY_COMPAT]: Test value, not whether defined.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c: Include
	<ldbl-classify-compat.h>.
	[LDBL_CLASSIFY_COMPAT]: Test value, not whether defined.
	* sysdeps/arm/math_private.h (LDBL_CLASSIFY_COMPAT): Remove macro.
	* sysdeps/mips/math_private.h (LDBL_CLASSIFY_COMPAT): Likewise.
	* sysdeps/m68k/coldfire/math_private.h: Remove file.
	* sysdeps/microblaze/math_private.h: Likewise.
	* sysdeps/nios2/math_private.h: Likewise.
	* sysdeps/sh/math_private.h: Likewise.
2018-02-01 21:01:00 +00:00
..
net Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
netinet generic if_ether.h: Fix build 2018-01-19 01:51:10 +01:00
nfs Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sys Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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a.out.h
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allocalim.h
asm-syntax.h
atomic-machine.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
c++-types.data Add placeholder c++-types.data and *.abilist files. 2015-02-13 15:41:34 -08:00
confstr.h
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dl-procinfo.c
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entry.h
errqueue.h
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float128-abi.h Move some float128 symbol version definitions. 2017-10-16 22:04:42 +00:00
fork.h
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ifreq.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
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ifunc-sel.h Do not stack-protect ifunc resolvers [BZ #7065] 2016-12-26 10:08:41 +01:00
intr-msg.h
inttypes.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
ld.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
ldbl-classify-compat.h Move LDBL_CLASSIFY_COMPAT to its own header. 2018-02-01 21:01:00 +00:00
ldconfig.h Add support for the RISC-V-specific ELF flags 2018-01-25 10:06:19 -08:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
libanl.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libBrokenLocale.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
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libc.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libcidn.abilist
libcrypt.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libdl.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
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libm-test-ulps
libm-test-ulps-name Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
libm.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libnsl.abilist Add placeholder libnsl.abilist and libutil.abilist files 2016-03-07 00:49:36 +01:00
libnss_compat.abilist
libnss_db.abilist
libnss_dns.abilist
libnss_files.abilist
libnss_hesiod.abilist
libnss_nis.abilist
libnss_nisplus.abilist
libpthread.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libresolv.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
librt.abilist Simplify the abilist format 2015-11-06 13:58:53 +01:00
libutil.abilist Add placeholder libnsl.abilist and libutil.abilist files 2016-03-07 00:49:36 +01:00
link_map.h ld.so: Add architecture specific fields 2017-11-13 08:02:52 -08:00
linkmap.h Rename bits/linkmap.h to linkmap.h (bug 14912). 2015-09-04 19:44:27 +00:00
local-setxid.h
localplt.data ld.so: Introduce struct dl_exception 2017-08-10 16:54:57 +02:00
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math_ldbl_opt.h
math_ldbl.h Allow direct use of math_ldbl.h in testsuite. 2017-02-25 10:40:48 -05:00
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not-cancel.h hurd: fix warnings 2018-01-27 16:45:10 +01:00
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rtld-lowlevel.h
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siglist.h Update copyright dates with scripts/update-copyrights. 2018-01-01 00:32:25 +00:00
sigset-cvt-mask.h hurd: fix warning 2018-01-27 16:45:55 +01:00
sigsetops.h hurd: fix warnings 2018-01-27 16:47:36 +01:00
stackguard-macros.h BZ #15754: Fix test case for ARM. 2013-09-23 01:44:38 -04:00
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symbol-hacks.h PLT avoidance for __stack_chk_fail [BZ #7065] 2016-12-26 10:11:05 +01:00
sysdep-cancel.h
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tls-macros.h
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tst-audit.h
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unsecvars.h Ignore and remove LD_HWCAP_MASK for AT_SECURE programs (bug #21209) 2017-03-07 20:52:04 +05:30
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