glibc/sysdeps/i386
Joseph Myers 59a63cca11 Fix nexttoward overflow in non-default rounding modes (bug 19059).
ISO C requires overflowing results from nexttoward to be the
appropriate infinity independent of the rounding mode, but some
implementations use a rounding-mode-dependent result (this is the same
issue as was fixed for nextafter in bug 16677).  This patch fixes the
problem by making the nexttoward implementations discard the result
from the floating-point computation that forced an overflow exception
and then return the infinity previously computed with integer
arithmetic.

Tested for x86_64, x86, mips64 and powerpc.

	[BZ #19059]
	* math/s_nexttowardf.c (__nexttowardf): Do not return value from
	overflowing computation.
	* sysdeps/i386/fpu/s_nexttoward.c (__nexttoward): Likewise.
	* sysdeps/i386/fpu/s_nexttowardf.c (__nexttowardf): Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttoward.c (__nexttoward):
	Likewise.
	* sysdeps/ieee754/ldbl-128/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttoward.c (__nexttoward):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttoward.c (__nexttoward): Likewise.
	* sysdeps/ieee754/ldbl-96/s_nexttowardf.c (__nexttowardf):
	Likewise.
	* sysdeps/ieee754/ldbl-opt/s_nexttowardfd.c (__nldbl_nexttowardf):
	Likewise.
	* math/libm-test.inc (nexttoward_test_data): Add more tests.
2015-10-02 17:11:13 +00:00
..
fpu Fix nexttoward overflow in non-default rounding modes (bug 19059). 2015-10-02 17:11:13 +00:00
i586 Detect and select i586/i686 implementation at run-time 2015-08-27 09:06:44 -07:00
i686 Avoid excess range in results from i386 exp, hypot, pow functions (bug 18980). 2015-09-18 21:53:22 +00:00
i786
nptl
sys
____longjmp_chk.S
__longjmp.S
abort-instr.h
add_n.S
addmul_1.S
asm-syntax.h
atomic-machine.h Move bits/atomic.h to atomic-machine.h (bug 14912). 2015-09-11 20:00:19 +00:00
backtrace.c Move bits/libc-lock.h and bits/libc-lockP.h out of bits/ (bug 14912). 2015-09-08 21:11:03 +00:00
bcopy.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
bsd-_setjmp.S
bsd-setjmp.S
bzero.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
cacheinfo.c Use x86-64 cacheinfo.c and sysconf.c for x86 2015-08-19 04:27:04 -07:00
configure Preserve bound registers for pointer pass/return 2015-07-09 06:50:12 -07:00
configure.ac Preserve bound registers for pointer pass/return 2015-07-09 06:50:12 -07:00
crti.S
crtn.S
dl-irel.h
dl-lookupcfg.h
dl-machine.h Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
dl-procinfo.c Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
dl-procinfo.h
dl-tls.h
dl-tlsdesc.h
dl-tlsdesc.S
dl-trampoline.S Preserve bound registers for pointer pass/return 2015-07-09 06:50:12 -07:00
ffs.c
gccframe.h
gmp-mparam.h
htonl.S Move i486/htonl.S to htonl.S 2015-08-27 07:50:34 -07:00
htons.S
i386-mcount.S
Implies
init-arch.h Detect and select i586/i686 implementation at run-time 2015-08-27 09:06:44 -07:00
jmpbuf-offsets.h
jmpbuf-unwind.h
ldbl2mpn.c
ldsodefs.h Add _dl_x86_cpu_features to rtld_global 2015-08-13 03:41:22 -07:00
link-defines.sym Preserve bound registers for pointer pass/return 2015-07-09 06:50:12 -07:00
lshift.S
machine-gmon.h
Makefile Don't disable SSE in x86-64 ld.so 2015-08-26 07:55:42 -07:00
memchr.S
memcmp.S
memcopy.h
memcpy_chk.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memcpy.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memmove_chk.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memmove.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
mempcpy_chk.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
mempcpy.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memset_chk.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memset.S Add i386 memset and memcpy assembly functions 2015-08-27 09:04:54 -07:00
memusage.h
mp_clz_tab.c
mul_1.S
preconfigure
pthread_spin_trylock.S Move i486/pthread_spin_trylock.S to pthread_spin_trylock.S 2015-08-27 07:55:29 -07:00
rawmemchr.S
rshift.S
setfpucw.c
setjmp.S
stackguard-macros.h
stackinfo.h
start.S
stpcpy.S
stpncpy.S
strcat.S Move i486/strcat.S to strcat.S 2015-08-27 07:56:41 -07:00
strchr.S
strchrnul.S
strcspn.S
string-inlines.c Move i486/string-inlines.c to string-inlines.c 2015-08-27 07:51:55 -07:00
strlen.c
strlen.S Move i486/strlen.S to strlen.S 2015-08-27 07:57:55 -07:00
strpbrk.S
strrchr.S
strspn.S
strtok_r.S
strtok.S
sub_n.S
submul_1.S
sysdep.h
tls-macros.h
tlsdesc.c
tlsdesc.sym
tst-audit3.c Add a testcase for i386 LD_AUDIT 2015-07-07 05:09:30 -07:00
tst-audit3.h Add a testcase for i386 LD_AUDIT 2015-07-07 05:09:30 -07:00
tst-audit.h
tst-auditmod3a.c Add a testcase for i386 LD_AUDIT 2015-07-07 05:09:30 -07:00
tst-auditmod3b.c Add a missing break in tst-auditmod3b.c 2015-08-09 08:06:50 -07:00
tst-ld-sse-use.sh Don't disable SSE in x86-64 ld.so 2015-08-26 07:55:42 -07:00
tst-stack-align.h
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