glibc/sysdeps/s390
Joseph Myers b2491db6c8 Refactor FP_ILOGB* out of bits/mathdef.h.
Continuing the refactoring of bits/mathdef.h, this patch stops it
defining FP_ILOGB0 and FP_ILOGBNAN, moving the required information to
a new header bits/fp-logb.h.

There are only two possible values of each of those macros permitted
by ISO C.  TS 18661-1 adds corresponding macros for llogb, and their
values are required to correspond to those of the ilogb macros in the
obvious way.  Thus two boolean values - for which the same choices are
correct for most architectures - suffice to determine the value of all
these macros, and by defining macros for those boolean values in
bits/fp-logb.h we can then define the public FP_* macros in math.h and
avoid the present duplication of the associated feature test macro
logic.

This patch duly moves to bits/fp-logb.h defining __FP_LOGB0_IS_MIN and
__FP_LOGBNAN_IS_MIN.  Default definitions of those to 0 are correct
for both architectures, while ia64, m68k and x86 get their own
versions of bits/fp-logb.h to reflect their use of values different
from the defaults.

The patch renders many copies of bits/mathdef.h trivial (needed only
to avoid the default __NO_LONG_DOUBLE_MATH).  I'll revise
<https://sourceware.org/ml/libc-alpha/2016-11/msg00865.html>
accordingly so that it removes all bits/mathdef.h headers except the
default one and the alpha one, and arranges for the header to be
included only by complex.h as the only remaining use at that point
will be for the alpha ABI issues there.

Tested for x86_64 and x86.  Also did compile-only testing with
build-many-glibcs.py (using glibc sources from before the commit that
introduced many build failures with undefined __GI___sigsetjmp).

	* bits/fp-logb.h: New file.
	* sysdeps/ia64/bits/fp-logb.h: Likewise.
	* sysdeps/m68k/m680x0/bits/fp-logb.h: Likewise.
	* sysdeps/x86/bits/fp-logb.h: Likewise.
	* math/Makefile (headers): Add bits/fp-logb.h.
	* math/math.h: Include <bits/fp-logb.h>.
	[__USE_ISOC99] (FP_ILOGB0): Define based on __FP_LOGB0_IS_MIN.
	[__USE_ISOC99] (FP_ILOGBNAN): Define based on __FP_LOGBNAN_IS_MIN.
	* bits/mathdef.h (FP_ILOGB0): Remove.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/aarch64/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/alpha/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/ia64/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/m68k/m680x0/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/mips/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/powerpc/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/s390/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/sparc/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
	* sysdeps/x86/bits/mathdef.h (FP_ILOGB0): Likewise.
	(FP_ILOGBNAN): Likewise.
2016-12-01 02:56:55 +00:00
..
bits Refactor FP_ILOGB* out of bits/mathdef.h. 2016-12-01 02:56:55 +00:00
fpu Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139). 2016-11-04 16:49:06 +00:00
multiarch s390: Refactor ifunc resolvers due to false debuginfo. 2016-10-07 10:11:21 +02:00
nptl Remove cached PID/TID in clone 2016-11-24 19:38:51 -02:00
s390-32 s390x: Add hidden definition for __sigsetjmp 2016-11-15 15:51:01 +01:00
s390-64 s390x: Add hidden definition for __sigsetjmp 2016-11-15 15:51:01 +01:00
abort-instr.h S390: Use __asm__ instead of asm. 2015-11-20 08:56:40 +01:00
asm-syntax.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
atomic-machine.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
configure S390: Do not set FE_INEXACT with feraiseexcept (FE_OWERFLOW|FE_UNDERFLOW). 2016-08-31 14:54:55 +02:00
configure.ac S390: Do not set FE_INEXACT with feraiseexcept (FE_OWERFLOW|FE_UNDERFLOW). 2016-08-31 14:54:55 +02:00
dl-irel.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-procinfo.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-procinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
dl-tls.h elf: Consolidate machine-agnostic DTV definitions in <dl-dtv.h> 2016-06-20 14:31:40 +02:00
ffs.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
fix-fp-int-convert-overflow.h S/390: Do not raise inexact exception in lrint/lround. [BZ #19486] 2016-01-18 12:48:06 +01:00
gccframe.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
gconv-modules S390: Get rid of make warning: overriding recipe for target gconv-modules. 2016-05-25 17:18:04 +02:00
gmp-mparam.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Implies * math/divtc3.c: New file. 2006-02-01 03:02:06 +00:00
iso-8859-1_cp037_z900.c S390: Use s390-64 specific ionv-modules on s390-32, too. 2016-05-25 17:18:05 +02:00
jmpbuf-offsets.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
jmpbuf-unwind.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
libc-tls.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
linkmap.h S390: Use DT_JUMPREL in prelink undo code. 2016-07-06 15:22:35 +02:00
longjmp.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
machine-gmon.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
Makefile S390: Use s390-64 specific ionv-modules on s390-32, too. 2016-05-25 17:18:05 +02:00
mempcpy.S S390: Implement mempcpy with help of memcpy. [BZ #19765] 2016-05-24 10:39:13 +02:00
memusage.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
preconfigure Move base_machine and machine settings from configure.ac to sysdeps preconfigure fragments. 2014-06-25 17:52:56 +00:00
sotruss-lib.c Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
stackinfo.h Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
string_private.h Add _STRING_INLINE_unaligned and string_private.h 2016-02-18 14:55:29 -02:00
utf8-utf16-z9.c S390: Use s390-64 specific ionv-modules on s390-32, too. 2016-05-25 17:18:05 +02:00
utf8-utf32-z9.c S390: Fix utf32 to utf8 handling of low surrogates (disable cu41). 2016-05-25 17:18:05 +02:00
utf16-utf32-z9.c S390: Fix utf32 to utf16 handling of low surrogates (disable cu42). 2016-05-25 17:18:06 +02:00
Versions S/390: Revert the jmp_buf/ucontext_t ABI change. 2014-07-31 20:04:54 +02:00