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8cbd1453ec
glibc/sysdeps
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Joseph Myers 8cbd1453ec Fix x86/x86_64 nextafterl incrementing negative subnormals (bug 20205). 
The x86 / x86_64 implementation of nextafterl (also used for
nexttowardl) produces incorrect results (NaNs) when negative
subnormals, the low 32 bits of whose mantissa are zero, are
incremented towards zero.  This patch fixes this by disabling the
logic to decrement the exponent in that case.

Tested for x86_64 and x86.

	[BZ #20205]
	* sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Do not adjust
	exponent when incrementing negative subnormal with low mantissa
	word zero.
	* math/libm-test.inc (nextafter_test_data) [TEST_COND_intel96]:
	Add another test.
2016-06-03 21:30:12 +00:00
..
aarch64 This is an optimized memset for AArch64. Memset is split into 4 main cases: 2016-05-12 16:44:53 +01:00
alpha Update Alpha libm-test-ulps 2016-01-25 10:43:41 -08:00
arm Fix building glibc master with NDEBUG and --with-cpu. 2016-03-15 23:23:24 -04:00
generic Fix crash on getauxval call without HAVE_AUX_VECTOR 2016-04-10 23:58:43 +02:00
gnu Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
hppa hppa: fix dladdr [BZ #19415] 2016-01-08 02:19:26 -05:00
i386 Fix x86/x86_64 nextafterl incrementing negative subnormals (bug 20205). 2016-06-03 21:30:12 +00:00
ia64 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
ieee754 Fix ldbl-128ibm ceill, rintl etc. for sNaN arguments (bug 20156). 2016-05-27 13:59:24 +00:00
init_array Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
m68k m68k: use large PIC model for gcrt1.o 2016-04-30 18:51:43 +02:00
mach hurd: disable ifunc for now 2016-05-30 22:13:47 +02:00
microblaze Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
mips Fix MIPS64 memcpy regression. 2016-01-28 01:52:05 +00:00
nacl Fix build with HAVE_AUX_VECTOR 2016-04-11 10:27:25 +02:00
nios2 Maintainence patch for nios2: update ULPS file and localplt.data changes. 2016-01-21 22:58:03 -08:00
nptl Increase fork signal safety for single-threaded processes [BZ #19703] 2016-05-12 15:26:55 +02:00
posix getaddrinfo: Convert from extend_alloca to struct scratch_buffer 2016-05-12 14:07:56 +02:00
powerpc Fix powerpc64 ceil, rint etc. on sNaN input (bug 20160). 2016-05-27 17:47:54 +00:00
pthread Revert "aio: fix newp->running data race" 2016-05-04 15:52:30 +02:00
s390 S390: Fix utf32 to utf16 handling of low surrogates (disable cu42). 2016-05-25 17:18:06 +02:00
sh Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
sparc Add _STRING_INLINE_unaligned and string_private.h 2016-02-18 14:55:29 -02:00
tile Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
unix Fix macro API for __USE_KERNEL_IPV6_DEFS. 2016-06-02 23:52:06 -04:00
wordsize-32 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
wordsize-64 Update copyright dates with scripts/update-copyrights. 2016-01-04 16:05:18 +00:00
x86 Count number of logical processors sharing L2 cache 2016-05-27 15:16:51 -07:00
x86_64 Do not raise "inexact" from x86_64 SSE4.1 ceil, floor (bug 15479). 2016-05-24 21:11:18 +00:00