Commit Graph

1186 Commits

Author SHA1 Message Date
H.J. Lu
209826bcf2 Replace ELF_RTYPE_CLASS_NOCOPY with ELF_RTYPE_CLASS_COPY
ELF_RTYPE_CLASS_NOCOPY in comments is a typo.  It should be
ELF_RTYPE_CLASS_COPY.

	[BZ #18082]
	* sysdeps/alpha/dl-machine.h (elf_machine_type_class): Replace
	ELF_RTYPE_CLASS_NOCOPY with ELF_RTYPE_CLASS_COPY in comments.
	* sysdeps/arm/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/hppa/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/i386/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/ia64/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/m68k/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/microblaze/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/nios2/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/sh/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (elf_machine_type_class):
	Likewise.
	* sysdeps/tile/dl-machine.h (elf_machine_type_class): Likewise.
	* sysdeps/x86_64/dl-machine.h (elf_machine_type_class): Likewise.
2015-03-05 08:40:41 -08:00
Joseph Myers
2ca725c594 Fix ldbl-96, ldbl-128ibm atanhl inaccuracy (bug 18046, bug 18047).
The threshold in ldbl-96 atanhl for when to return the argument,
0x1p-28, is a bit too big, and that in ldbl-128ibm atanhl is much too
big (the relevant condition being x^3/3 being < 0.5ulp of x),
resulting in errors a bit above the limits of those considered
acceptable in glibc in the ldbl-96 case, and in large errors in the
ldbl-128ibm case.  This patch changes those implementations to use
more appropriate thresholds and adds tests around the thresholds for
various formats.

Tested for x86_64, x86 and powerpc.  x86_64 and x86 ulps updated
accordingly.

	[BZ #18046]
	[BZ #18047]
	* sysdeps/ieee754/ldbl-128ibm/e_atanhl.c (__ieee754_atanhl): Use
	0x1p-56L as threshold for just returning the argument.
	* sysdeps/ieee754/ldbl-96/e_atanhl.c (__ieee754_atanhl): Use
	0x1p-32L as threshold for just returning the argument.
	* math/auto-libm-test-in: Add more tests of atanh.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulp: Likewise.
2015-02-27 17:48:37 +00:00
Joseph Myers
ec0ce0d3be Fix asin missing underflows (bug 16351).
Similar to various other bugs in this area, some asin implementations
do not raise the underflow exception for subnormal arguments, when the
result is tiny and inexact.  This patch forces the exception in a
similar way to previous fixes.

Tested for x86_64, x86, powerpc and mips64.

	[BZ #16351]
	* sysdeps/i386/fpu/e_asin.S (dbl_min): New object.
	(MO): New macro.
	(__ieee754_asin): Force underflow exception for results with small
	absolute value.
	* sysdeps/i386/fpu/e_asinf.S (flt_min): New object.
	(MO): New macro.
	(__ieee754_asinf): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/dbl-64/e_asin.c: Include <float.h> and <math.h>.
	(__ieee754_asin): Force underflow exception for results with small
	absolute value.
	* sysdeps/ieee754/flt-32/e_asinf.c: Include <float.h>.
	(__ieee754_asinf): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/ldbl-128/e_asinl.c: Include <float.h>.
	(__ieee754_asinl): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/ldbl-128ibm/e_asinl.c: Include <float.h>.
	(__ieee754_asinl): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/ldbl-96/e_asinl.c: Include <float.h>.
	(__ieee754_asinl): Force underflow exception for results with
	small absolute value.
	* sysdeps/x86_64/fpu/multiarch/e_asin.c [HAVE_FMA4_SUPPORT]:
	Include <math.h>.
	* math/auto-libm-test-in: Do not mark underflow exceptions as
	possibly missing for bug 16351.
	* math/auto-libm-test-out: Regenerated.
2015-02-26 17:18:54 +00:00
Joseph Myers
137cef7d43 Fix ldbl-128ibm asinhl inaccuracy (bug 18020).
The ldbl-128ibm implementation of asinhl uses cut-offs of 0x1p28 and
0x1p-29 to determine when to use simpler formulas that avoid possible
overflow / underflow.  Both those cut-offs are inappropriate for this
format, resulting in large errors.  This patch changes the code to use
more appropriate cut-offs of 0x1p56 and 0x1p-56, adding tests around
the cut-offs for various floating-point formats.

Tested for powerpc.  Also tested for x86_64 and x86 and updated ulps.

	[BZ #18020]
	* sysdeps/ieee754/ldbl-128ibm/s_asinhl.c (__asinhl): Use 2**56 and
	2**-56 not 2**28 and 2**-29 as thresholds for simpler formulas.
	* math/auto-libm-test-in: Add more tests of asinh.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-02-25 11:13:41 +00:00
Joseph Myers
440169d681 Fix ldbl-128ibm acoshl inaccuracy (bug 18019).
The ldbl-128ibm implementation of acoshl uses a cut-off of 0x1p28 to
determine when to use log(x) + log(2) as a formula.  That cut-off is
too small for this format, resulting in large errors.  This patch
changes it to a more appropriate cut-off of 0x1p56, adding tests
around the cut-offs for various floating-point formats.

Tested for powerpc.  Also tested for x86_64 and x86 and updated ulps.

	[BZ #18019]
	* sysdeps/ieee754/ldbl-128ibm/e_acoshl.c (__ieee754_acoshl): Use
	2**56 not 2**28 as threshold for log (2x) formula.
	* math/auto-libm-test-in: Add more tests of acosh.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2015-02-25 00:01:15 +00:00
Joseph Myers
9438b237ab Fix x86/x86_64 scalb (qNaN, -Inf) (bug 16783).
Various x86 / x86_64 versions of scalb / scalbf / scalbl produce
spurious "invalid" exceptions for (qNaN, -Inf) arguments, because this
is wrongly handled like (+/-Inf, -Inf) which *should* raise such an
exception.  (In fact the NaN case of the code determining whether to
quietly return a zero or a NaN for second argument -Inf was
accidentally dead since the code had been made to return a NaN with
exception.)  This patch fixes the code to do the proper test for an
infinity as distinct from a NaN.

(Since the existing code does nothing to distinguish qNaNs and sNaNs
here, this patch doesn't either.  If in future we systematically
implement proper sNaN semantics following TS 18661-1:2014, there will
be lots of bugs to address - Thomas found lots of issues with his
patch <https://sourceware.org/ml/libc-ports/2013-04/msg00008.html> to
add SNaN tests (which never went in and would now require significant
reworking).)

Tested for x86_64 and x86.  Committed.

	[BZ #16783]
	* sysdeps/i386/fpu/e_scalb.S (__ieee754_scalb): Do not handle
	arguments (NaN, -Inf) the same as (+/-Inf, -Inf).
	* sysdeps/i386/fpu/e_scalbf.S (__ieee754_scalbf): Likewise.
	* sysdeps/i386/fpu/e_scalbl.S (__ieee754_scalbl): Likewise.
	* sysdeps/x86_64/fpu/e_scalbl.S (__ieee754_scalbl): Likewise.
	* math/libm-test.inc (scalb_test_data): Add more tests.
2015-02-24 17:30:02 +00:00
Joseph Myers
4629c866ad Fix atan / atan2 missing underflows (bug 15319).
This patch fixes bug 15319, missing underflows from atan / atan2 when
the result of atan is very close to its small argument (or that of
atan2 is very close to the ratio of its arguments, which may be an
exact division).

The usual approach of doing an underflowing computation if the
computed result is subnormal is followed.  For 32-bit x86, there are
extra complications: the inline __ieee754_atan2 in bits/mathinline.h
needs to be disabled for float and double because other libm functions
using it generally rely on getting proper underflow exceptions from
it, while the out-of-line functions have to remove excess range and
precision from the underflowing result so as to return an exact 0 in
the case where errno should be set for underflow to 0.  (The failures
I saw without that are similar to those Carlos reported for other
functions, where I haven't seen a response to
<https://sourceware.org/ml/libc-alpha/2015-01/msg00485.html>
confirming if my diagnosis is correct.  Arguably all libm functions
with float and double returns should remove excess range and
precision, but that's a separate matter.)

The x86_64 long double case reported in a comment in bug 15319 is not
a bug (it's an argument of LDBL_MIN, and x86_64 is an after-rounding
architecture so the correct IEEE result is not to raise underflow in
the given rounding mode, in addition to treating the result as an
exact LDBL_MIN being within the newly clarified documentation of
accuracy goals).  I'm presuming that the fpatan instruction can be
trusted to raise appropriate exceptions when the (long double) result
underflows (after rounding) and so no changes are needed for x86 /
x86_64 long double functions here; empirically this is the case for
the cases covered in the testsuite, on my system.

Tested for x86_64, x86, powerpc and mips64.  Only 32-bit x86 needs
ulps updates (for the changes to inlines meaning some functions no
longer get excess precision from their __ieee754_atan2* calls).

	[BZ #15319]
	* sysdeps/i386/fpu/e_atan2.S (dbl_min): New object.
	(MO): New macro.
	(__ieee754_atan2): For results with small absolute value, force
	underflow exception and remove excess range and precision from
	return value.
	* sysdeps/i386/fpu/e_atan2f.S (flt_min): New object.
	(MO): New macro.
	(__ieee754_atan2f): For results with small absolute value, force
	underflow exception and remove excess range and precision from
	return value.
	* sysdeps/i386/fpu/s_atan.S (dbl_min): New object.
	(MO): New macro.
	(__atan): For results with small absolute value, force underflow
	exception and remove excess range and precision from return value.
	* sysdeps/i386/fpu/s_atanf.S (flt_min): New object.
	(MO): New macro.
	(__atanf): For results with small absolute value, force underflow
	exception and remove excess range and precision from return value.
	* sysdeps/ieee754/dbl-64/e_atan2.c: Include <float.h> and
	<math.h>.
	(__ieee754_atan2): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/dbl-64/s_atan.c: Include <float.h> and
	<math_private.h>.
	(atan): Force underflow exception for results with small absolute
	value.
	* sysdeps/ieee754/flt-32/s_atanf.c: Include <float.h>.
	(__atanf): Force underflow exception for results with small
	absolute value.
	* sysdeps/ieee754/ldbl-128/s_atanl.c: Include <float.h> and
	<math.h>.
	(__atanl): Force underflow exception for results with small
	absolute value.
	* sysdeps/ieee754/ldbl-128ibm/s_atanl.c: Include <float.h>.
	(__atanl): Force underflow exception for results with small
	absolute value.
	* sysdeps/x86/fpu/bits/mathinline.h
	[!__SSE2_MATH__ && !__x86_64__ && __LIBC_INTERNAL_MATH_INLINES]
	(__ieee754_atan2): Only define inline for long double.
	* sysdeps/x86_64/fpu/multiarch/e_atan2.c
	[HAVE_FMA4_SUPPORT || HAVE_AVX_SUPPORT]: Include <math.h>.
	* math/auto-libm-test-in: Do not mark underflow exceptions as
	possibly missing for bug 15319.  Add more tests of atan2.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (casin_test_data): Do not mark underflow
	exceptions as possibly missing for bug 15319.
	(casinh_test_data): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
2015-02-18 21:10:49 +00:00
Joseph Myers
03d95bd483 Fix exp2 spurious underflows (bug 16560).
This patch fixes the remaining part of bug 16560, spurious underflows
from exp2 of arguments close to 0 (when the result is close to 1, so
should not underflow), by just using 1+x instead of a more complicated
calculation when the argument is sufficiently small.

Tested for x86_64, x86 and mips64.

	[BZ #16560]
	* math/e_exp2l.c [LDBL_MANT_DIG == 106] (LDBL_EPSILON): Undefine
	and redefine.
	(__ieee754_exp2l): Do not multiply small fractional parts by
	M_LN2l.
	* sysdeps/i386/fpu/e_exp2l.S (__ieee754_exp2l): Just add 1 to
	small argument.
	* sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Likewise.
	* sysdeps/ieee754/flt-32/e_exp2f.c (__ieee754_exp2f): Likewise.
	* sysdeps/x86_64/fpu/e_exp2l.S (__ieee754_exp2l): Likewise.
	* math/auto-libm-test-in: Add more tests of exp2.
	* math/auto-libm-test-out: Regenerated.
2015-02-12 19:02:45 +00:00
Evangelos Foutras
132a1328ec Fix __memcpy_chk on non-SSE2 CPUs
In commit 8b4416d, the 1: jump label in __mempcpy_chk was accidentally
moved.  This resulted in failures of mempcpy on CPU without SSE2.
2015-02-10 21:39:06 +10:00
Roland McGrath
ac9e0e5e40 Clean up sysdep-dl-routines variable. 2015-02-06 10:42:08 -08:00
Joseph Myers
8116321f65 Fix libm feupdateenv namespace (bug 17748).
Concluding the fixes for C90 libm functions calling C99 fe* functions,
this patch fixes the case of feupdateenv by making it a weak alias for
__feupdateenv and making the affected code call __feupdateenv.

Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by the patch).  Also tested for ARM
(soft-float) that the math.h linknamespace tests now pass.

	[BZ #17748]
	* include/fenv.h (__feupdateenv): Use libm_hidden_proto.
	* math/feupdateenv.c (__feupdateenv): Use libm_hidden_def.
	* sysdeps/aarch64/fpu/feupdateenv.c (feupdateenv): Rename to
	__feupdateenv and define as weak alias of __feupdateenv.  Use
	libm_hidden_weak.
	* sysdeps/alpha/fpu/feupdateenv.c (__feupdateenv): Use
	libm_hidden_def.
	* sysdeps/arm/feupdateenv.c (feupdateenv): Rename to __feupdateenv
	and define as weak alias of __feupdateenv.  Use libm_hidden_weak.
	* sysdeps/hppa/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/i386/fpu/feupdateenv.c (__feupdateenv): Use
	libm_hidden_def.
	* sysdeps/ia64/fpu/feupdateenv.c (feupdateenv): Rename to
	__feupdateenv and define as weak alias of __feupdateenv.  Use
	libm_hidden_weak.
	* sysdeps/m68k/fpu/feupdateenv.c (__feupdateenv): Use
	libm_hidden_def.
	* sysdeps/mips/fpu/feupdateenv.c (feupdateenv): Rename to
	__feupdateenv and define as weak alias of __feupdateenv.  Use
	libm_hidden_weak.
	* sysdeps/powerpc/fpu/feupdateenv.c (__feupdateenv): Use
	libm_hidden_def.
	* sysdeps/powerpc/nofpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c
	(__feupdateenv): Likewise.
	* sysdeps/s390/fpu/feupdateenv.c (feupdateenv): Rename to
	__feupdateenv and define as weak alias of __feupdateenv.  Use
	libm_hidden_weak.
	* sysdeps/sh/sh4/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sparc/fpu/feupdateenv.c (__feupdateenv): Use
	libm_hidden_def.
	* sysdeps/tile/math_private.h (__feupdateenv): New inline
	function.
	* sysdeps/x86_64/fpu/feupdateenv.c (__feupdateenv): Use
	libm_hidden_def.
	* sysdeps/generic/math_private.h (default_libc_feupdateenv): Call
	__feupdateenv instead of feupdateenv.
	(default_libc_feupdateenv_test): Likewise.
	(libc_feresetround_ctx): Likewise.
2015-01-07 19:01:20 +00:00
Joseph Myers
01238691bb Fix libm fesetround namespace (bug 17748).
Continuing the fixes for C90 libm functions calling C99 fe* functions,
this patch fixes the case of fesetround by making it a weak alias of
__fesetround and making the affected code call __fesetround.  An
existing __fesetround function in fenv_libc.h for powerpc is renamed
to __fesetround_inline.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).  Also tested for ARM
(soft-float) that fesetround failures disappear from the linknamespace
test results (feupdateenv remains to be addressed to complete fixing
bug 17748).

	[BZ #17748]
	* include/fenv.h (__fesetround): Declare.  Use libm_hidden_proto.
	* math/fesetround.c (fesetround): Rename to __fesetround and
	define as weak alias of __fesetround.  Use libm_hidden_weak.
	* sysdeps/aarch64/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/alpha/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/arm/fesetround.c (fesetround): Likewise.
	* sysdeps/hppa/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/i386/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/ia64/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/m68k/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/mips/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/powerpc/fpu/fenv_libc.h (__fesetround): Rename to
	__fesetround_inline.
	* sysdeps/powerpc/fpu/fenv_private.h (libc_fesetround_ppc): Call
	__fesetround_inline instead of __fesetround.
	* sysdeps/powerpc/fpu/fesetround.c (fesetround): Rename to
	__fesetround and define as weak alias of __fesetround.  Use
	libm_hidden_weak.  Call __fesetround_inline instead of
	__fesetround.
	* sysdeps/powerpc/nofpu/fesetround.c (fesetround): Rename to
	__fesetround and define as weak alias of __fesetround.  Use
	libm_hidden_weak.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fesetround.c (fesetround):
	Likewise.
	* sysdeps/s390/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/sh/sh4/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/sparc/fpu/fesetround.c (fesetround): Likewise.
	* sysdeps/tile/math_private.h (__fesetround): New inline function.
	* sysdeps/x86_64/fpu/fesetround.c (fesetround): Rename to
	__fesetround and define as weak alias of __fesetround.  Use
	libm_hidden_weak.
	* sysdeps/generic/math_private.h (default_libc_fesetround): Call
	__fesetround instead of fesetround.
	(default_libc_feholdexcept_setround): Likewise.
	(libc_feholdsetround_ctx): Likewise.
	(libc_feholdsetround_noex_ctx): Likewise.
2015-01-07 00:41:23 +00:00
Joseph Myers
cd42798aef Fix libm fesetenv namespace (bug 17748).
Continuing the fixes for C90 libm functions calling C99 fe* functions,
this patch fixes the case of fesetenv by making it a weak alias of
__fesetenv and making the affected code (including various copies of
feupdateenv which also gets called from C90 functions) call
__fesetenv.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).  Also tested for ARM
(soft-float) that fesetenv failures disappear from the linknamespace
test results (fsetround and feupdateenv remain to be addressed to
complete fixing bug 17748).

	[BZ #17748]
	* include/fenv.h (__fesetenv): Use libm_hidden_proto.
	* math/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/aarch64/fpu/fesetenv.c (fesetenv): Rename to __fesetenv
	and define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/alpha/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/arm/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/hppa/fpu/fesetenv.c (fesetenv): Likewise.
	* sysdeps/i386/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/ia64/fpu/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/m68k/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/mips/fpu/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/powerpc/fpu/fesetenv.c (__fesetenv): Use
	libm_hidden_def.
	* sysdeps/powerpc/nofpu/fesetenv.c (__fesetenv): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fesetenv.c (__fesetenv):
	Likewise.
	* sysdeps/s390/fpu/fesetenv.c (fesetenv): Rename to __fesetenv and
	define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/sh/sh4/fpu/fesetenv.c (fesetenv): Likewise.
	* sysdeps/sparc/fpu/fesetenv.c (__fesetenv): Use libm_hidden_def.
	* sysdeps/tile/math_private.h (__fesetenv): New inline function.
	* sysdeps/x86_64/fpu/fesetenv.c (fesetenv): Rename to __fesetenv
	and define as weak alias of __fesetenv.  Use libm_hidden_weak.
	* sysdeps/generic/math_private.h (default_libc_fesetenv): Use
	__fesetenv instead of fesetenv.
	(libc_feresetround_noex_ctx): Likewise.
	* sysdeps/alpha/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/hppa/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/i386/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/ia64/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/m68k/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/mips/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/powerpc/nofpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/feupdateenv.c
	(__feupdateenv): Likewise.
	* sysdeps/s390/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sh/sh4/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sparc/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/x86_64/fpu/feupdateenv.c (__feupdateenv): Likewise.
2015-01-06 23:36:20 +00:00
Joseph Myers
ef9faf1385 Fix libm feholdexcept namespace (bug 17748).
Continuing the fixes for C90 libm functions calling C99 fe* functions,
this patch fixes the case of feholdexcept by making it a weak alias of
__feholdexcept and making the affected code call __feholdexcept.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).  Also tested for ARM
(soft-float) that feholdexcept failures disappear from the
linknamespace test failures (fesetenv, fsetround and feupdateenv
remain to be addressed to complete fixing bug 17748).

	[BZ #17748]
	* include/fenv.h (__feholdexcept): Declare.  Use
	libm_hidden_proto.
	* math/feholdexcpt.c (feholdexcept): Rename to __feholdexcept and
	define as weak alias of __feholdexcept.  Use libm_hidden_weak.
	* sysdeps/aarch64/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/alpha/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/arm/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/hppa/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/i386/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/ia64/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/m68k/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/mips/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/powerpc/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/powerpc/nofpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/feholdexcpt.c
	(feholdexcept): Likewise.
	* sysdeps/s390/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/sh/sh4/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/sparc/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/x86_64/fpu/feholdexcpt.c (feholdexcept): Likewise.
	* sysdeps/generic/math_private.h (default_libc_feholdexcept): Use
	__feholdexcept instead of feholdexcept.
	(default_libc_feholdexcept_setround): Likewise.
2015-01-05 23:06:14 +00:00
Joseph Myers
b93c2205ec Fix libm fegetround namespace (bug 17748).
Continuing the fixes for C90 libm functions calling C99 fe* functions,
this patch fixes the case of fegetround by making it a weak alias of
__fegetround and making the affected code call __fegetround.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).  Also tested for ARM
(soft-float) that fegetround failures disappear from the linknamespace
test failures (feholdexcept, fesetenv, fesetround and feupdateenv
remain to be addressed before bug 17748 is fully fixed, although this
patch may suffice to fix the failures in some cases, when the libc_fe*
functions are implemented but there is no architecture-specific sqrt
implementation in use so there were failures from fegetround used by
sqrt but no other such failures).

	[BZ #17748]
	* include/fenv.h (__fegetround): Declare.  Use libm_hidden_proto.
	* math/fegetround.c (fegetround): Rename to __fegetround and
	define as weak alias of __fegetround.  Use libm_hidden_weak.
	* sysdeps/aarch64/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/alpha/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/arm/fegetround.c (fegetround): Likewise.
	* sysdeps/hppa/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/i386/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/ia64/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/m68k/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/mips/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/powerpc/fpu/fegetround.c (fegetround): Likewise.
	Undefine after rather than before function definition; use
	parentheses around function name in definition.
	(__fegetround): Also undefine macro after function definition.
	* sysdeps/powerpc/nofpu/fegetround.c (fegetround): Rename to
	__fegetround and define as weak alias of __fegetround.  Use
	libm_hidden_weak.  Do not undefine as macro.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fegetround.c (fegetround):
	Likewise.
	* sysdeps/s390/fpu/fegetround.c (fegetround): Rename to
	__fegetround and define as weak alias of __fegetround.  Use
	libm_hidden_weak.
	* sysdeps/sh/sh4/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/sparc/fpu/fegetround.c (fegetround): Likewise.
	* sysdeps/tile/math_private.h (__fegetround): New inline function.
	* sysdeps/x86_64/fpu/fegetround.c (fegetround): Rename to
	__fegetround and define as weak alias of __fegetround.  Use
	libm_hidden_weak.
	* sysdeps/ieee754/dbl-64/e_sqrt.c (__ieee754_sqrt): Use
	__fegetround instead of fegetround.
2015-01-02 20:44:42 +00:00
Joseph Myers
b168057aaa Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Joseph Myers
73a268c759 Fix libm fegetenv namespace (bug 17748).
Some C90 libm functions call fegetenv via libc_feholdsetround*
functions in math_private.h.  This patch makes them call __fegetenv
instead, making fegetenv into a weak alias for __fegetenv as needed.

Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).  Also tested for ARM
(soft-float) that fegetenv failures disappear from the linknamespace
test failures (however, similar fixes will also be needed for
fegetround, feholdexcept, fesetenv, fesetround and feupdateenv before
this set of namespace issues covered by bug 17748 is fully fixed and
those linknamespace tests start passing).

	[BZ #17748]
	* include/fenv.h (__fegetenv): Use libm_hidden_proto.
	* math/fegetenv.c (__fegetenv): Use libm_hidden_def.
	* sysdeps/aarch64/fpu/fegetenv.c (fegetenv): Rename to __fegetenv
	and define as weak alias of __fegetenv.  Use libm_hidden_weak.
	* sysdeps/alpha/fpu/fegetenv.c (__fegetenv): Use libm_hidden_def.
	* sysdeps/arm/fegetenv.c (fegetenv): Rename to __fegetenv and
	define as weak alias of __fegetenv.  Use libm_hidden_weak.
	* sysdeps/hppa/fpu/fegetenv.c (fegetenv): Likewise.
	* sysdeps/i386/fpu/fegetenv.c (__fegetenv): Use libm_hidden_def.
	* sysdeps/ia64/fpu/fegetenv.c (fegetenv): Rename to __fegetenv and
	define as weak alias of __fegetenv.  Use libm_hidden_weak.
	* sysdeps/m68k/fpu/fegetenv.c (__fegetenv): Use libm_hidden_def.
	* sysdeps/mips/fpu/fegetenv.c (fegetenv): Rename to __fegetenv and
	define as weak alias of __fegetenv.  Use libm_hidden_weak.
	* sysdeps/powerpc/fpu/fegetenv.c (__fegetenv): Use
	libm_hidden_def.
	* sysdeps/powerpc/nofpu/fegetenv.c (__fegetenv): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fegetenv.c (__fegetenv):
	Likewise.
	* sysdeps/s390/fpu/fegetenv.c (fegetenv): Rename to __fegetenv and
	define as weak alias of __fegetenv.  Use libm_hidden_weak.
	* sysdeps/sh/sh4/fpu/fegetenv.c (fegetenv): Likewise.
	* sysdeps/sparc/fpu/fegetenv.c (__fegetenv): Use libm_hidden_def.
	* sysdeps/tile/math_private.h (__fegetenv): New inline function.
	* sysdeps/x86_64/fpu/fegetenv.c (fegetenv): Rename to __fegetenv
	and define as weak alias of __fegetenv.  Use libm_hidden_weak.
	* sysdeps/generic/math_private.h (libc_feholdsetround_ctx): Use
	__fegetenv instead of fegetenv.
	(libc_feholdsetround_noex_ctx): Likewise.
2014-12-31 22:07:52 +00:00
H.J. Lu
7062bd4230 Don't check PI_STATIC_AND_HIDDEN in i386 dl-machine.h
PI_STATIC_AND_HIDDEN is always defined for i386.  There is no need to
check PI_STATIC_AND_HIDDEN in sysdeps/i386/dl-machine.h.

	[BZ #17775]
	* sysdeps/i386/dl-machine.h (PI_STATIC_AND_HIDDEN): Removed.
	(elf_machine_dynamic) [!PI_STATIC_AND_HIDDEN]: Likewise.
	(elf_machine_load_address) [!PI_STATIC_AND_HIDDEN]: Likewise.
2014-12-30 14:31:58 -08:00
Andrew Senkevich
07256e183e i386: Fix build by GCC 5.0
Fixed 3 "make check" failures on glibc 32bit built by gcc 5.0 due to EBX
was enabled for allocation:

https://gcc.gnu.org/ml/gcc-patches/2014-10/msg00892.html

Tests elf/tst-tls3, elf/tst-execstack-needed, elf/tst-execstack-prog
were failed because EBX was used as PIC register.

	* sysdeps/i386/tls-macros.h: Include <features.h>.
	(TLS_LE): Use non-PIC version for GCC >= 5.0.
	(TLS_IE): Likewise.
	(TLS_LD): Likewise.
	(TLS_GD): Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h (check_consistency): Don't
	define for GCC >= 5.0.
2014-12-30 11:37:41 -08:00
Joseph Myers
0747f81811 Fix libm feraiseexcept namespace (bug 17723).
Various C90 and UNIX98 libm functions call feraiseexcept, which is not
in those standards.  This causes linknamespace test failures - except
on x86 / x86_64, where feraiseexcept is inline (for the relevant
constant arguments) in bits/fenv.h.

This patch fixes this by making those functions call __feraiseexcept
instead.  All changes are applied to all architectures rather than
considering the possibility that some might not be needed in some
cases (e.g. x86) as it seems most maintainable to keep architectures
consistent.

Where __feraiseexcept does not exist, it is added, with feraiseexcept
made a weak alias; where it is a strong alias, it is made weak.
libm_hidden_def / libm_hidden_proto are used with __feraiseexcept
(this might in some cases improve code generation for existing calls
to __feraiseexcept in some code on some architectures).  Where there
are dummy feraiseexcept macros (on architectures without
floating-point exceptions support, to avoid compile errors from
references to undefined FE_* macros), corresponding dummy
__feraiseexcept macros are added.  And on x86, to ensure
__feraiseexcept calls still get inlined, the inline function in
bits/fenv.h is refactored so that most of it can be reused in an
inline __feraiseexcept in a separate include/bits/fenv.h.

Calls are changed in C90/UNIX98 functions, but generally not in
functions missing from those standards.  They are also changed in
libc_fe* functions (on the basis that those might be used in any libm
function), and in feupdateenv (on the same basis - may be used, via
default libc_*, in any libm function - of course feupdateenv will need
changing to __feupdateenv in a subsequent patch to make that fully
namespace-clean).

No __feraiseexcept is added corresponding to the feraiseexcept in
powerpc bits/fenvinline.h, because that macro definition is
conditional on !defined __NO_MATH_INLINES, and glibc libm is built
with -D__NO_MATH_INLINES, so changing internal calls to use
__feraiseexcept should make no difference.

Tested for x86_64 (testsuite; the only change in disassembly of
installed shared libraries is a slight code reordering in clog10, of
no apparent significance).  Also tested for MIPS, where (in the
configuration tested) it eliminates math.h linknamespace failures for
n32 and n64 (some for o32 remain because of other issues).

	[BZ #17723]
	* include/fenv.h (__feraiseexcept): Use libm_hidden_proto.
	* math/fraiseexcpt.c (__feraiseexcept): Use libm_hidden_def.
	* sysdeps/aarch64/fpu/fraiseexcpt.c (feraiseexcept): Rename to
	__feraiseexcept and define as weak alias of __feraiseexcept.  Use
	libm_hidden_weak.
	* sysdeps/arm/fraiseexcpt.c (feraiseexcept): Likewise.
	* sysdeps/hppa/fpu/fraiseexcpt.c (feraiseexcept): Likewise.
	* sysdeps/i386/fpu/fraiseexcpt.c (__feraiseexcept): Use
	libm_hidden_def.
	* sysdeps/ia64/fpu/fraiseexcpt.c (feraiseexcept): Rename to
	__feraiseexcept and define as weak alias of __feraiseexcept.  Use
	libm_hidden_weak.
	* sysdeps/m68k/coldfire/fpu/fraiseexcpt.c (feraiseexcept):
	Likewise.
	* sysdeps/microblaze/math_private.h (__feraiseexcept): New macro.
	* sysdeps/mips/fpu/fraiseexcpt.c (feraiseexcept): Rename to
	__feraiseexcept and define as weak alias of __feraiseexcept.  Use
	libm_hidden_weak.
	* sysdeps/powerpc/fpu/fraiseexcpt.c (__feraiseexcept): Use
	libm_hidden_def.
	* sysdeps/powerpc/nofpu/fraiseexcpt.c (__feraiseexcept): Likewise.
	* sysdeps/powerpc/powerpc32/e500/nofpu/fraiseexcpt.c
	(__feraiseexcept): Likewise.
	* sysdeps/s390/fpu/fraiseexcpt.c (feraiseexcept): Rename to
	__feraiseexcept and define as weak alias of __feraiseexcept.  Use
	libm_hidden_weak.
	* sysdeps/sh/sh4/fpu/fraiseexcpt.c (feraiseexcept): Likewise.
	* sysdeps/sparc/fpu/fraiseexcpt.c (__feraiseexcept): Use
	libm_hidden_def.
	* sysdeps/tile/math_private.h (__feraiseexcept): New macro.
	* sysdeps/unix/sysv/linux/alpha/fraiseexcpt.S (__feraiseexcept):
	Use libm_hidden_def.
	* sysdeps/x86_64/fpu/fraiseexcpt.c (__feraiseexcept): Use
	libm_hidden_def.
	(feraiseexcept): Define as weak not strong alias.  Use
	libm_hidden_weak.
	* sysdeps/x86/fpu/bits/fenv.h (__feraiseexcept_invalid_divbyzero):
	New inline function.  Factored out of ...
	(feraiseexcept): ... here.  Use __feraiseexcept_invalid_divbyzero.
	* sysdeps/x86/fpu/include/bits/fenv.h: New file.
	* math/e_scalb.c (invalid_fn): Call __feraiseexcept instead of
	feraiseexcept.
	* math/w_acos.c (__acos): Likewise.
	* math/w_asin.c (__asin): Likewise.
	* math/w_ilogb.c (__ilogb): Likewise.
	* math/w_j0.c (y0): Likewise.
	* math/w_j1.c (y1): Likewise.
	* math/w_jn.c (yn): Likewise.
	* math/w_log.c (__log): Likewise.
	* math/w_log10.c (__log10): Likewise.
	* sysdeps/aarch64/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/aarch64/fpu/math_private.h
	(libc_feupdateenv_test_aarch64): Likewise.
	* sysdeps/alpha/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/arm/fenv_private.h (libc_feupdateenv_test_vfp): Likewise.
	* sysdeps/arm/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/ia64/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/m68k/fpu/feupdateenv.c (__feupdateenv): Likewise.
	* sysdeps/mips/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/powerpc/fpu/e_sqrt.c (__slow_ieee754_sqrt): Likewise.
	* sysdeps/s390/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sh/sh4/fpu/feupdateenv.c (feupdateenv): Likewise.
	* sysdeps/sparc/fpu/feupdateenv.c (__feupdateenv): Likewise.
2014-12-30 17:08:09 +00:00
Andrew Senkevich
8b4416d83c i386: memcpy functions with SSE2 unaligned load/store
These new memcpy functions are the 32-bit version of x86_64 SSE2 unaligned
memcpy.  Memcpy average performace benefit is 18% on Silvermont, other
platforms also improved about 35%, benchmarked on Silvermont, Haswell, Ivy
Bridge, Sandy Bridge and Westmere, performance results attached in

https://sourceware.org/ml/libc-alpha/2014-07/msg00157.html

	* sysdeps/i386/i686/multiarch/bcopy-sse2-unaligned.S: New file.
	* sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove-sse2-unaligned.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy-sse2-unaligned.S: Likewise.
	* sysdeps/i386/i686/multiarch/bcopy.S: Select the sse2_unaligned
	version if bit_Fast_Unaligned_Load is set.
	* sysdeps/i386/i686/multiarch/memcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/Makefile (sysdep_routines): Add
	bcopy-sse2-unaligned, memcpy-sse2-unaligned,
	memmove-sse2-unaligned and mempcpy-sse2-unaligned.
	* sysdeps/i386/i686/multiarch/ifunc-impl-list.c (MAX_IFUNC): Set
	to 4.
	(__libc_ifunc_impl_list): Test __bcopy_sse2_unaligned,
	__memmove_chk_sse2_unaligned, __memmove_sse2_unaligned,
	__memcpy_chk_sse2_unaligned, __memcpy_sse2_unaligned,
	__mempcpy_chk_sse2_unaligned, and __mempcpy_sse2_unaligned.
2014-12-30 07:19:38 -08:00
H.J. Lu
050f7298e1 Add hidden __tls_get_addr/___tls_get_addr alias
__tls_get_addr/___tls_get_addr is always defined in ld.so.  There is
no need to call them via PLT inside ld.so.  This patch adds the hidden
__tls_get_addr/___tls_get_addr aliases and calls them directly from
_dl_tlsdesc_dynamic.  There is no need to set up the EBX register in
i386 _dl_tlsdesc_dynamic when calling the hidden ___tls_get_addr.

	* elf/dl-tls.c (__tls_get_addr): Provide the hidden definition
	if not defined.
	* sysdeps/i386/dl-tls.h (___tls_get_addr): Provide the hidden
	definition.
	* sysdeps/i386/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Call the
	hidden ___tls_get_addr.
	* sysdeps/x86_64/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Call the
	hidden __tls_get_addr.
	* sysdeps/generic/localplt.data (__tls_get_addr): Removed.
	* sysdeps/unix/sysv/linux/i386/localplt.data (___tls_get_addr):
	Likewise.
2014-12-21 09:27:11 -08:00
H.J. Lu
7432d613cd Remove @PLT from "call _dl_init@PLT" in _dl_start_user
_dl_start_user in ld.so calls the local function _dl_init.  There is no
need to go through PLT.

	* sysdeps/i386/dl-machine.h (_dl_start_user): Remove @PLT
	from "call _dl_init@PLT".
	* sysdeps/x86_64/dl-machine.h (_dl_start_user): Likewise.
	from "call _dl_init@PLT".
2014-12-21 05:27:31 -08:00
H.J. Lu
c9c1a2d02c Replace 1L with (mp_limb_t) 1
X86-64 and x32 use sysdeps/i386/ldbl2mpn.c.  res_ptr is a pointer
to mp_limb_t, which is long for i386 and x86-64 and long long for
x32.  On x32, I got

../sysdeps/x86_64/../i386/ldbl2mpn.c: In function ‘__mpn_extract_long_double’:
../sysdeps/x86_64/../i386/ldbl2mpn.c:72:4: error: left shift count >= width of type [-Werror]
    res_ptr[N - 1] &= ~(1L << ((LDBL_MANT_DIG - 1) % BITS_PER_MP_LIMB));
    ^
cc1: all warnings being treated as errors

This patch replaces 1L with (mp_limb_t) 1.  Verified on x32, i686 and
x86-64 with GCC 4.8.3.
2014-12-19 05:32:39 -08:00
Joseph Myers
2cfbdb9a27 Fix strftime wcschr namespace (bug 17634).
Use of strftime, a C90 function, ends up bringing in wcschr, which is
not a C90 function.  Although not a conformance bug (C90 reserves
wcs*), this is still contrary to glibc practice of avoiding relying on
those reservations; this patch arranges for the internal uses to use
__wcschr instead, with wcschr being a weak alias.  This is more
complicated than some such patches because of the various IFUNC
definitions of wcschr (which include code redefining libc_hidden_def
in a way that involves creating __GI_wcschr manually and so also needs
to create __GI___wcschr after the change of internal uses to use
__wcschr).

Tested for x86_64 and 32-bit x86 (testsuite, and that disassembly of
installed shared libraries is unchanged by the patch).

2014-12-10  Joseph Myers  <joseph@codesourcery.com>
	    Adhemerval Zanella  <azanella@linux.vnet.ibm.com>

	[BZ #17634]
	* wcsmbs/wcschr.c [!WCSCHR] (wcschr): Define as __wcschr.
	Undefine after defining function.  Define as weak alias of
	__wcschr.  Use libc_hidden_weak.
	* include/wchar.h (__wcschr): Declare.  Use libc_hidden_proto.
	* sysdeps/i386/i686/multiarch/wcschr-c.c [IS_IN (libc) && SHARED]
	(libc_hidden_def): Also define __GI___wcschr alias.
	* sysdeps/i386/i686/multiarch/wcschr.S (wcschr): Rename to
	__wcschr and define as weak alias of __wcschr.
	* sysdeps/powerpc/power6/wcschr.c [!WCSCHR] (WCSCHR): Define as
	__wcschr.
	[!WCSCHR] (DEFAULT_WCSCHR): Define.
	[DEFAULT_WCSCHR] (__wcschr): Use libc_hidden_def.
	[DEFAULT_WCSCHR] (wcschr): Define as weak alias of __wcschr.  Use
	libc_hidden_weak.  Do not use libc_hidden_def.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c
	[IS_IN (libc) && SHARED] (libc_hidden_def): Also define
	__GI___wcschr alias.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c
	[IS_IN (libc)] (wcschr): Define as macro expanding to
	__redirect_wcschr.
	[IS_IN (libc)] (__wcschr_ppc): Use __redirect_wcschr in typeof.
	[IS_IN (libc)] (__wcschr_power6): Likewise.
	[IS_IN (libc)] (__wcschr_power7): Likewise.
	[IS_IN (libc)] (__libc_wcschr): New.  Define with libc_ifunc
	instead of wcschr.
	[IS_IN (libc)] (wcschr): Undefine and define as weak alias of
	__libc_wcschr.
	[!IS_IN (libc)] (libc_hidden_def): Do not undefine and redefine.
	* sysdeps/powerpc/powerpc64/multiarch/wcschr.c (wcschr): Rename to
	__wcschr and define as weak alias of __wcschr.  Use
	libc_hidden_builtin_def.
	* sysdeps/x86_64/wcschr.S (wcschr): Rename to __wcschr and define
	as weak alias of __wcschr.  Use libc_hidden_weak.
	* time/alt_digit.c (_nl_get_walt_digit): Use __wcschr instead of
	wcschr.
	* time/era.c (_nl_init_era_entries): Likewise.
	* conform/Makefile (test-xfail-ISO/time.h/linknamespace): Remove
	variable.
	(test-xfail-XPG3/time.h/linknamespace): Likewise.
	(test-xfail-XPG4/time.h/linknamespace): Likewise.
2014-12-10 16:59:02 +00:00
Siddhesh Poyarekar
4f41c682f3 Remove NOT_IN_libc
Replace with !IS_IN (libc).  This completes the transition from
the IS_IN/NOT_IN macros to the IN_MODULE macro set.

The generated code is unchanged on x86_64.

	* stdlib/isomac.c (fmt): Replace NOT_IN_libc with IN_MODULE.
	(get_null_defines): Adjust.
	* sunrpc/Makefile: Adjust comment.
	* Makerules (CPPFLAGS-nonlib): Remove NOT_IN_libc.
	* elf/Makefile (CPPFLAGS-sotruss-lib): Likewise.
	(CFLAGS-interp.c): Likewise.
	(CFLAGS-ldconfig.c): Likewise.
	(CPPFLAGS-.os): Likewise.
	* elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
	* extra-lib.mk (CPPFLAGS-$(lib)): Likewise.
	* extra-modules.mk (extra-modules.mk): Likewise.
	* iconv/Makefile (CPPFLAGS-iconvprogs): Likewise.
	* locale/Makefile (CPPFLAGS-locale_programs): Likewise.
	* malloc/Makefile (CPPFLAGS-memusagestat): Likewise.
	* nscd/Makefile (CPPFLAGS-nscd): Likewise.
	* nss/Makefile (CPPFLAGS-nss_test1): Likewise.
	* stdlib/Makefile (CFLAGS-tst-putenvmod.c): Likewise.
	* sysdeps/gnu/Makefile ($(objpfx)errlist-compat.c): Likewise.
	* sysdeps/unix/sysv/linux/Makefile (CPPFLAGS-lddlibc4): Likewise.
	* iconvdata/Makefile (CPPFLAGS): Likewise.
	(cpp-srcs-left): Add libof for all iconvdata routines.
	* bits/stdio-lock.h: Replace NOT_IN_libc with IS_IN.
	* include/assert.h: Likewise.
	* include/ctype.h: Likewise.
	* include/errno.h: Likewise.
	* include/libc-symbols.h: Likewise.
	* include/math.h: Likewise.
	* include/netdb.h: Likewise.
	* include/resolv.h: Likewise.
	* include/stdio.h: Likewise.
	* include/stdlib.h: Likewise.
	* include/string.h: Likewise.
	* include/sys/stat.h: Likewise.
	* include/wctype.h: Likewise.
	* intl/l10nflist.c: Likewise.
	* libidn/idn-stub.c: Likewise.
	* libio/libioP.h: Likewise.
	* nptl/libc_multiple_threads.c: Likewise.
	* nptl/pthreadP.h: Likewise.
	* posix/regex_internal.h: Likewise.
	* resolv/res_hconf.c: Likewise.
	* sysdeps/arm/armv7/multiarch/memcpy.S: Likewise.
	* sysdeps/arm/memmove.S: Likewise.
	* sysdeps/arm/sysdep.h: Likewise.
	* sysdeps/generic/_itoa.h: Likewise.
	* sysdeps/generic/symbol-hacks.h: Likewise.
	* sysdeps/gnu/errlist.awk: Likewise.
	* sysdeps/gnu/errlist.c: Likewise.
	* sysdeps/i386/i586/memcpy.S: Likewise.
	* sysdeps/i386/i586/memset.S: Likewise.
	* sysdeps/i386/i686/memcpy.S: Likewise.
	* sysdeps/i386/i686/memmove.S: Likewise.
	* sysdeps/i386/i686/mempcpy.S: Likewise.
	* sysdeps/i386/i686/memset.S: Likewise.
	* sysdeps/i386/i686/multiarch/bcopy.S: Likewise.
	* sysdeps/i386/i686/multiarch/bzero.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp-sse4.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy-ssse3-rep.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove.S: Likewise.
	* sysdeps/i386/i686/multiarch/memmove_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset-sse2-rep.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset.S: Likewise.
	* sysdeps/i386/i686/multiarch/memset_chk.S: Likewise.
	* sysdeps/i386/i686/multiarch/rawmemchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcat.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp-sse4.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/strcspn.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strlen.S: Likewise.
	* sysdeps/i386/i686/multiarch/strnlen.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr-sse2-bsf.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/strrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/strspn.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcschr.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscmp-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscmp.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy-ssse3.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcscpy.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcslen.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr-sse2.S: Likewise.
	* sysdeps/i386/i686/multiarch/wcsrchr.S: Likewise.
	* sysdeps/i386/i686/multiarch/wmemcmp-c.c: Likewise.
	* sysdeps/i386/i686/multiarch/wmemcmp.S: Likewise.
	* sysdeps/ia64/fpu/libm-symbols.h: Likewise.
	* sysdeps/nptl/bits/libc-lock.h: Likewise.
	* sysdeps/nptl/bits/libc-lockP.h: Likewise.
	* sysdeps/nptl/bits/stdio-lock.h: Likewise.
	* sysdeps/posix/closedir.c: Likewise.
	* sysdeps/posix/opendir.c: Likewise.
	* sysdeps/posix/readdir.c: Likewise.
	* sysdeps/posix/rewinddir.c: Likewise.
	* sysdeps/powerpc/novmx-sigjmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/bsd-_setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/fpu/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/bzero.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memrchr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp-ppc32.S: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcschr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcscpy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr-ppc32.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/multiarch/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc32/power6/memset.S: Likewise.
	* sysdeps/powerpc/powerpc32/setjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/__longjmp.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/bzero.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memmove-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memmove.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/mempcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memset-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/memset.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/rawmemchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/stpncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcasecmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcasecmp_l.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strchrnul.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strcspn.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strlen-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncase.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncase_l.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncat.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp-ppc64.S: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncmp.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strncpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strnlen.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strpbrk.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strspn-ppc64.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/strspn.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcschr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcscpy.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wcsrchr.c: Likewise.
	* sysdeps/powerpc/powerpc64/multiarch/wordcopy.c: Likewise.
	* sysdeps/powerpc/powerpc64/setjmp.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/ifunc-resolve.c: Likewise.
	* sysdeps/s390/s390-32/multiarch/memcmp.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/memcpy.S: Likewise.
	* sysdeps/s390/s390-32/multiarch/memset.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/ifunc-resolve.c: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcmp.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/memcpy.S: Likewise.
	* sysdeps/s390/s390-64/multiarch/memset.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara2.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-niagara4.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memcpy.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara1.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset-niagara4.S: Likewise.
	* sysdeps/sparc/sparc64/multiarch/memset.S: Likewise.
	* sysdeps/unix/alpha/sysdep.S: Likewise.
	* sysdeps/unix/alpha/sysdep.h: Likewise.
	* sysdeps/unix/make-syscalls.sh: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/getpid.c: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/hppa/nptl/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/m68k/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/not-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/longjmp_chk.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/brk.S: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/tile/waitpid.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep-cancel.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
	* sysdeps/wordsize-32/symbol-hacks.h: Likewise.
	* sysdeps/x86_64/memcpy.S: Likewise.
	* sysdeps/x86_64/memmove.c: Likewise.
	* sysdeps/x86_64/memset.S: Likewise.
	* sysdeps/x86_64/multiarch/init-arch.h: Likewise.
	* sysdeps/x86_64/multiarch/memcmp-sse4.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/memcmp.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3-back.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/memcpy_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memmove.c: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/mempcpy_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/memset-avx2.S: Likewise.
	* sysdeps/x86_64/multiarch/memset.S: Likewise.
	* sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcat.S: Likewise.
	* sysdeps/x86_64/multiarch/strchr-sse2-no-bsf.S: Likewise.
	* sysdeps/x86_64/multiarch/strchr.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcmp.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy.S: Likewise.
	* sysdeps/x86_64/multiarch/strcspn.S: Likewise.
	* sysdeps/x86_64/multiarch/strspn.S: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy-c.c: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/wcscpy.S: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp-c.c: Likewise.
	* sysdeps/x86_64/multiarch/wmemcmp.S: Likewise.
	* sysdeps/x86_64/strcmp.S: Likewise.
2014-11-24 15:03:45 +05:30
Siddhesh Poyarekar
a38484851a Remove IS_IN_rtld
Replace with IS_IN (rtld).  Generated code is unchanged on
x86_64.

        * elf/Makefile (CPPFLAGS-.os): Remove IS_IN_rtld.
        * elf/dl-open.c: Use IS_IN (rtld) instead if IS_IN_rtld.
        * elf/rtld-Rules: Likewise.
        * elf/setup-vdso.h: Likewise.
        * include/assert.h: Likewise.
        * include/bits/stdlib-float.h: Likewise.
        * include/errno.h: Likewise.
        * include/sys/stat.h: Likewise.
        * include/unistd.h: Likewise.
        * sysdeps/aarch64/setjmp.S: Likewise.
        * sysdeps/alpha/setjmp.S: Likewise.
        * sysdeps/arm/__longjmp.S: Likewise.
        * sysdeps/arm/aeabi_unwind_cpp_pr1.c: Likewise.
        * sysdeps/arm/setjmp.S: Likewise.
        * sysdeps/arm/sysdep.h: Likewise.
        * sysdeps/generic/_itoa.h: Likewise.
        * sysdeps/generic/dl-sysdep.h: Likewise.
        * sysdeps/generic/ldsodefs.h: Likewise.
        * sysdeps/i386/dl-tls.h: Likewise.
        * sysdeps/i386/setjmp.S: Likewise.
        * sysdeps/m68k/setjmp.c: Likewise.
        * sysdeps/mach/hurd/dl-execstack.c: Likewise.
        * sysdeps/mach/hurd/opendir.c: Likewise.
        * sysdeps/posix/getcwd.c: Likewise.
        * sysdeps/posix/opendir.c: Likewise.
        * sysdeps/posix/profil.c: Likewise.
        * sysdeps/powerpc/dl-procinfo.h: Likewise.
        * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h: Likewise.
        * sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc64/__longjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc64/setjmp-common.S: Likewise.
        * sysdeps/s390/dl-tls.h: Likewise.
        * sysdeps/s390/s390-32/setjmp.S: Likewise.
        * sysdeps/s390/s390-64/setjmp.S: Likewise.
        * sysdeps/sh/sh3/setjmp.S: Likewise.
        * sysdeps/sh/sh4/setjmp.S: Likewise.
        * sysdeps/unix/alpha/sysdep.h: Likewise.
        * sysdeps/unix/arm/sysdep.S: Likewise.
        * sysdeps/unix/i386/sysdep.S: Likewise.
        * sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/getcwd.c: Likewise.
        * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/setjmp.S: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/m68k-helpers.S: Likewise.
        * sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
        * sysdeps/unix/x86_64/sysdep.S: Likewise.
        * sysdeps/x86_64/setjmp.S: Likewise.
2014-11-24 11:41:48 +05:30
Torvald Riegel
1ea339b697 Add arch-specific configuration for C11 atomics support.
This sets __HAVE_64B_ATOMICS if provided.  It also sets
USE_ATOMIC_COMPILER_BUILTINS to true if the existing atomic ops use the
__atomic* builtins (aarch64, mips partially) or if this has been
tested (x86_64); otherwise, this is set to false so that C11 atomics will
be based on the existing atomic operations.
2014-11-20 11:57:38 +01:00
Joseph Myers
c5684fdb2b Don't use INTDEF/INTUSE with _dl_init (bug 14132).
Continuing the removal of the obsolete INTDEF / INTUSE mechanism, this
patch eliminates its use for _dl_init.  Since _dl_init was already
declared with hidden visibility, creating a second hidden alias for it
was completely pointless, so this patch replaces all uses of
_dl_init_internal with plain _dl_init instead of using hidden_proto /
hidden_def (which are only needed when you want a hidden alias for a
non-hidden symbol; it's quite possible there are cases where they are
used but don't need to be because the symbol in question is not part
of the public ABI and is only used within a single library, so using
attributes_hidden instead would suffice).

Tested for x86_64 that installed stripped shared libraries are
unchanged by the patch.

	[BZ #14132]
	* elf/dl-init.c (_dl_init): Don't use INTDEF.
	* sysdeps/aarch64/dl-machine.h (RTLD_START): Use _dl_init instead
	of _dl_init_internal.
	* sysdeps/alpha/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/arm/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/hppa/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/i386/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/ia64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/m68k/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/microblaze/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/mips/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/powerpc/powerpc32/dl-start.S (_start): Likewise.
	* sysdeps/s390/s390-32/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/s390/s390-64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sh/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc32/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/sparc/sparc64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/tile/dl-start.S (_start): Likewise.
	* sysdeps/x86_64/dl-machine.h (RTLD_START): Likewise.
	* sysdeps/x86_64/x32/dl-machine.h (RTLD_START): Likewise.
2014-11-04 23:26:39 +00:00
Andreas Schwab
3574f2fdf3 Fix misdetected Slow_SSE4_2 cpu feature bit (bug 17501) 2014-10-27 10:44:28 +01:00
Roland McGrath
674b89786e NPTL: Clean up THREAD_SYSINFO macros. 2014-10-17 15:03:00 -07:00
Mark Wielaard
9570bc53fc i386 TLS_INIT_TP might produce bogus asm changing stack pointer [BZ #17319]
TLS_INIT_TP in sysdeps/i386/nptl/tls.h uses some hand written asm to
generate a set_thread_area that might result in exchanging ebx and esp
around the syscall causing introspection tools like valgrind to loose
track of the user stack. Just use INTERNAL_SYSCALL which makes sure
esp isn't changed arbitrarily.

Before the patch the code would generate:

mov    $0xf3,%eax
movl   $0xfffff,0x8(%esp)
movl   $0x51,0xc(%esp)
xchg   %esp,%ebx
int    $0x80
xchg   %esp,%ebx

Using INTERNAL_SYSCALL instead will generate:

movl   $0xfffff,0x8(%esp)
movl   $0x51,0xc(%esp)
xchg   %ecx,%ebx
mov    $0xf3,%eax
int    $0x80
xchg   %ecx,%ebx

Thanks to Florian Weimer for analysing why the original code generated
the bogus esp usage:

  _segdescr.desc happens to be at the top of the stack, so its address
  is in %esp.  The asm statement says that %3 is an input, so its value
  will not change, and GCC can use %esp as the input register for the
  expression &_segdescr.desc.  But the constraints do not fully describe
  the asm statement because the %3 register is actually modified, albeit
  only temporarily.

	[BZ #17319]
	* sysdeps/i386/nptl/tls.h (TLS_INIT_TP): Use INTERNAL_SYSCALL
	to call set_thread_area instead of hand written asm.
	(__NR_set_thread_area): Removed define.
	(TLS_FLAG_WRITABLE): Likewise.
	(__ASSUME_SET_THREAD_AREA): Remove check.
	(TLS_EBX_ARG): Remove define.
	(TLS_LOAD_EBX): Likewise.
2014-08-28 09:53:08 +02:00
Allan McRae
529bf51595 Update x86 ULPs
Using gcc-4.9, i7-2620M, i686 Linux.
2014-08-27 13:36:02 +10:00
Siddhesh Poyarekar
eb72478a28 Remove unnecessary uses of NOT_IN_libc
If a IS_IN_* macro is defined, then NOT_IN_libc is always defined,
except obviously for IS_IN_libc.  There's no need to check for both.
Verified on x86_64 and i686 that the source is unchanged.

       * include/libc-symbols.h: Remove unnecessary check for
       NOT_IN_libc.
       * nptl/pthreadP.h: Likewise.
       * sysdeps/aarch64/setjmp.S: Likewise.
       * sysdeps/alpha/setjmp.S: Likewise.
       * sysdeps/arm/sysdep.h: Likewise.
       * sysdeps/i386/setjmp.S: Likewise.
       * sysdeps/m68k/setjmp.c: Likewise.
       * sysdeps/posix/getcwd.c: Likewise.
       * sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise.
       * sysdeps/powerpc/powerpc64/setjmp-common.S: Likewise.
       * sysdeps/s390/s390-32/setjmp.S: Likewise.
       * sysdeps/s390/s390-64/setjmp.S: Likewise.
       * sysdeps/sh/sh3/setjmp.S: Likewise.
       * sysdeps/sh/sh4/setjmp.S: Likewise.
       * sysdeps/unix/alpha/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/ia64/setjmp.S: Likewise.
       * sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
       * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
       * sysdeps/x86_64/setjmp.S: Likewise.
2014-08-21 10:26:46 +05:30
H.J. Lu
f2fef657d8 Enable AVX2 optimized memset only if -mavx2 works
* config.h.in (HAVE_AVX2_SUPPORT): New #undef.
	* sysdeps/i386/configure.ac: Set HAVE_AVX2_SUPPORT and
	config-cflags-avx2.
	* sysdeps/x86_64/configure.ac: Likewise.
	* sysdeps/i386/configure: Regenerated.
	* sysdeps/x86_64/configure: Likewise.
	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	memset-avx2 only if config-cflags-avx2 is yes.
	* sysdeps/x86_64/multiarch/ifunc-impl-list.c (__libc_ifunc_impl_list):
	Tests for memset_chk and memset only if HAVE_AVX2_SUPPORT is
	defined.
	* sysdeps/x86_64/multiarch/memset.S: Define multiple versions
	only if HAVE_AVX2_SUPPORT is defined.
	* sysdeps/x86_64/multiarch/memset_chk.S: Likewise.
2014-07-14 07:58:27 -07:00
Andreas Schwab
c213442ddd Update i386 libm test ULPs 2014-07-09 10:53:46 +02:00
Will Newton
82374e65d7 Fix -Wundef warnings for SHARED
The definition of SHARED is tested with #ifdef pretty much everywhere
apart from these few places. The tlsdesc.c code seems to be copy and
pasted to a few architectures and there is one instance in the hppa
startup code.

ChangeLog:

2014-07-09  Will Newton  <will.newton@linaro.org>

	* sysdeps/aarch64/tlsdesc.c (_dl_unmap): Test SHARED with #ifdef.
	* sysdeps/arm/tlsdesc.c (_dl_unmap): Likewise.
	* sysdeps/i386/tlsdesc.c (_dl_unmap): Likewise.
	* sysdeps/x86_64/tlsdesc.c (_dl_unmap): Likewise.
	* sysdeps/hppa/start.S (_start): Likewise.
2014-07-09 09:26:07 +01:00
Siddhesh Poyarekar
80b5c50588 Fix Wundef warning for ELF_MACHINE_NO_REL on i386 2014-07-08 22:52:45 +05:30
Richard Henderson
05502548e9 Always provide HP_SMALL_TIMING_AVAIL 2014-07-03 08:38:36 -07:00
Richard Henderson
86e1a7ff92 Unify hp-timing implementations
Provide an hp-timing-common.h for ports to use.
2014-07-03 08:38:30 -07:00
Richard Henderson
428dd03f5a Remove HP_TIMING_DIFF_INIT and dl_hp_timing_overhead
Without HP_TIMING_ACCUM, dl_hp_timing_overhead is write-only.
If we remove it, there's no point in HP_TIMING_DIFF_INIT either.
2014-07-03 08:38:25 -07:00
Richard Henderson
c39323e9d2 Removing HP_TIMING_ACCUM as unused 2014-07-03 08:38:21 -07:00
Richard Henderson
850e0e032b Removing HP_TIMING_ZERO as unused 2014-07-03 08:38:18 -07:00
Joseph Myers
be25493251 Fix yn overflow handling in non-default rounding modes (bug 16561, bug 16562).
This patch fixes bugs 16561 and 16562, bad results of yn in overflow
cases in non-default rounding modes, both because an intermediate
overflow in the recurrence does not get detected if the result is not
an infinity and because an overflowing result may occur in the wrong
sign.  The fix is to set FE_TONEAREST mode internally for the parts of
the function where such overflows can occur (which includes the call
to y1 - where yn is used to compute a Bessel function of order -1,
negating the result of y1 isn't correct for overflowing results in
directed rounding modes) and then compute an overflowing value in the
original rounding mode if the to-nearest result was an infinity.

Tested x86_64 and x86 and ulps updated accordingly.  Also tested for
mips64 and powerpc32 to test the ldbl-128 and ldbl-128ibm changes.

(The tests for these bugs were added in my previous y1 patch, so the
only thing this patch has to do with the testsuite is enable yn
testing in all rounding modes.)

	[BZ #16561]
	[BZ #16562]
	* sysdeps/ieee754/dbl-64/e_jn.c: Include <float.h>.
	(__ieee754_yn): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/flt-32/e_jnf.c: Include <float.h>.
	(__ieee754_ynf): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/ldbl-128/e_jnl.c: Include <float.h>.
	(__ieee754_ynl): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c: Include <float.h>.
	(__ieee754_ynl): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/ieee754/ldbl-96/e_jnl.c: Include <float.h>.
	(__ieee754_ynl): Set FE_TONEAREST mode internally and then
	recompute overflowing results in original rounding mode.
	* sysdeps/i386/fpu/fenv_private.h [!__SSE2_MATH__]
	(libc_feholdsetround_ctx): New macro.
	* math/libm-test.inc (yn_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps : Likewise.
2014-06-27 14:52:13 +00:00
Joseph Myers
c2570a0b35 Move USE_REGPARMS define to sysdeps/i386/configure.ac.
This patch moves the USE_REGPARMS define from the toplevel
configure.ac to sysdeps/i386/configure.ac.

Tested x86 that the disassembly of installed shared libraries is
unchanged by this patch.

	* configure.ac (USE_REGPARMS): Don't define here.
	* configure: Regenerated.
	* sysdeps/i386/configure.ac (USE_REGPARMS): Define here.
	* sysdeps/i386/configure: Regenerated.
2014-06-25 20:26:14 +00:00
Joseph Myers
3e239be647 Move base_machine and machine settings from configure.ac to sysdeps preconfigure fragments.
This patch makes non-ex-ports architectures set base_machine and
machine based on the original configured machine value in preconfigure
fragments, like ex-ports architectures, rather than in the toplevel
configure.ac.

Tested x86 that the disassembly of installed shared libraries is
unchanged by the patch.

	* configure.ac (base_machine): Do not set specially for particular
	machines here.
	* configure: Regenerated.
	* sysdeps/powerpc/preconfigure: Move machine and base_machine
	settings from configure.ac.
	* sysdeps/i386/preconfigure: New file.
	* sysdeps/s390/preconfigure: Likewise.
	* sysdeps/sh/preconfigure: Likewise.
	* sysdeps/sparc/preconfigure: Likewise.
2014-06-25 17:52:56 +00:00
Siddhesh Poyarekar
911422da02 Add compat symbols for scalb* in i386
Bring back symbols into libc.so for scalb* functions.  They are no
longer used but unfortunately they're now part of the ABI.
2014-06-25 08:47:13 +05:30
Roland McGrath
0d749bbeba x86: Consolidate unnecessary nptl/ subdirectories. 2014-06-24 19:17:43 -07:00
Joseph Myers
4060283dec Fix x86/x86_64 expm1l spurious underflow exceptions (bug 16539).
This patch fixes bug 16539, spurious underflow exceptions from x86 /
x86-64 expm1l.  The problem is that the computation of a base-2
exponent with extra precision involves spurious underflows for
arguments that are small but not subnormal, so a check is added to
just return the argument in those cases.  (If the argument *is*
subnormal, underflowing is correct and the existing code will always
underflow, so it suffices to keep using the existing code in that
case; some expm1 implementations have a bug (bug 16353) with missing
underflow exceptions, but I don't think there's such a bug in this
particular version.)

Tested x86_64 and x86; no ulps updates needed.

(auto-libm-test-out diffs omitted below.)

	[BZ #16539]
	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Just
	return the argument for normal arguments with exponent below -64.
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]:
	Likewise.
	* math/auto-libm-test-in: Add another test of expm1.
	* math/auto-libm-test-out: Regenerated.
2014-06-24 21:00:08 +00:00
Joseph Myers
4648909d56 Fix cosh spurious underflows from expm1 (bug 16354), inaccurate results near 0 (bug 17061).
This patch fixes bug 16354, spurious underflows from cosh when a tiny
argument is passed to expm1 and expm1 correctly underflows although
the final result of cosh should be 1.  As noted in that bug, some
cases are latent because of expm1 implementations not raising
underflow (bug 16353), but all the implementations are fixed
similarly.  They already contained checks for tiny arguments, but the
checks were too late to avoid underflow from expm1 (although they
would avoid underflow from subsequent squaring of the result of
expm1); they are moved before the expm1 calls.

The thresholds used for considering arguments tiny are not
particularly consistent in how they relate to the precision of the
floating-point format in question.  They are, however, all sufficient
to ensure that the round-to-nearest result of cosh is indeed 1 below
the threshold (although sometimes they are smaller than necessary).
But the previous logic did not return 1, but the previously computed 1
+ expm1(abs(x)) value.  And the thresholds in the ldbl-128 and
ldbl-128ibm code (0x1p-71L - I suspect 0x3f8b was intended in the code
instead of 0x3fb8 - and (roughly) 0x1p-55L) are not sufficient for
that value to be 1.  So by moving the test for tiny arguments, and
consequently returning 1 directly now the expm1 value hasn't been
computed by that point, this patch also fixes bug 17061, the (large
number of ulps) inaccuracy for small arguments in those
implementations.  Tests for that bug are duly added.

Tested x86_64 and x86 and ulps updated accordingly.  Also tested for
mips64 and powerpc32 to validate the ldbl-128 and ldbl-128ibm changes.

	[BZ #16354]
	[BZ #17061]
	* sysdeps/ieee754/dbl-64/e_cosh.c (__ieee754_cosh): Check for
	small arguments before calling __expm1.
	* sysdeps/ieee754/flt-32/e_coshf.c (__ieee754_coshf): Check for
	small arguments before calling __expm1f.
	* sysdeps/ieee754/ldbl-128/e_coshl.c (__ieee754_coshl): Check for
	small arguments before calling __expm1l.
	* sysdeps/ieee754/ldbl-128ibm/e_coshl.c (__ieee754_coshl):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_coshl.c (__ieee754_coshl): Likewise.
	* math/auto-libm-test-in: Add more cosh tests.  Do not allow
	spurious underflow for some cosh tests.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
2014-06-23 20:20:10 +00:00
Joseph Myers
863893ec95 Test cpow in all rounding modes.
This patch enables testing of cpow in all rounding modes using
ALL_RM_TEST.  There were two reasons this was previously deferred:

* MPC has complicated rounding-mode-dependent rules for the signs of
  exact zero real or imaginary parts in the result of mpc_pow.  Annex
  G does not impose any such requirements and I don't think glibc
  should try to implement any particular logic here.  This patch adds
  support for gen-auto-libm-tests passing the IGNORE_ZERO_INF_SIGN
  flag to libm-test.inc.

* Error accumulations in some tests in non-default rounding modes
  exceed the maximum error permitted in libm-test.inc.  This patch
  marks the problem tests with xfail-rounding.  (It might be possible
  to reduce the accumulations a bit by using round-to-nearest when
  cpow calls clog, but I don't think there's much point; the
  implementation approach for cpow is fundamentally deficient, as
  discussed in the existing bug for cpow inaccuracy which can
  reasonably be considered to cover these less-inaccurate cases as
  well.  It's possible that the test "cpow 2 0 10 0" will also need
  xfail-rounding on some platforms.)

Tested x86_64 and x86 and ulps updated accordingly.

	* math/gen-auto-libm-tests.c: Document use of
	ignore-zero-inf-sign.
	(input_flag_type): Add value flag_ignore_zero_inf_sign.
	(input_flags): Add ignore-zero-inf-sign.
	(output_for_one_input_case): Handle flag_ignore_zero_inf_sign.
	* math/gen-libm-test.pl (generate_testfile): Handle
	ignore-zero-inf-sign.
	* math/auto-libm-test-in: Mark some cpow tests with
	ignore-zero-inf-sign and some with xfail-rounding.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (cpow_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-06-23 20:15:14 +00:00
Joseph Myers
4da6db5188 Fix pow overflow in non-default rounding modes (bug 16315).
This patch fixes bug 16315, bad pow handling of overflow/underflow in
non-default rounding modes.  Tests of pow are duly converted to
ALL_RM_TEST to run all tests in all rounding modes.

There are two main issues here.  First, various implementations
compute a negative result by negating a positive result, but this
yields inappropriate overflow / underflow values for directed
rounding, so either overflow / underflow results need recomputing in
the correct sign, or the relevant overflowing / underflowing operation
needs to be made to have a result of the correct sign.  Second, the
dbl-64 implementation sets FE_TONEAREST internally; in the overflow /
underflow case, the result needs recomputing in the original rounding
mode.

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16315]
	* sysdeps/i386/fpu/e_pow.S (__ieee754_pow): Ensure possibly
	overflowing or underflowing operations take place with sign of
	result.
	* sysdeps/i386/fpu/e_powf.S (__ieee754_powf): Likewise.
	* sysdeps/i386/fpu/e_powl.S (__ieee754_powl): Likewise.
	* sysdeps/ieee754/dbl-64/e_pow.c: Include <math.h>.
	(__ieee754_pow): Recompute overflowing and underflowing results in
	original rounding mode.
	* sysdeps/x86/fpu/powl_helper.c: Include <stdbool.h>.
	(__powl_helper): Allow negative argument X and scale negated value
	as needed.  Avoid passing value outside [-1, 1] to f2xm1.
	* sysdeps/x86_64/fpu/e_powl.S (__ieee754_powl): Ensure possibly
	overflowing or underflowing operations take place with sign of
	result.
	* sysdeps/x86_64/fpu/multiarch/e_pow.c [HAVE_FMA4_SUPPORT]:
	Include <math.h>.
	* math/auto-libm-test-in: Add more tests of pow.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (pow_test): Use ALL_RM_TEST.
	(pow_tonearest_test_data): Remove.
	(pow_test_tonearest): Likewise.
	(pow_towardzero_test_data): Likewise.
	(pow_test_towardzero): Likewise.
	(pow_downward_test_data): Likewise.
	(pow_test_downward): Likewise.
	(pow_upward_test_data): Likewise.
	(pow_test_upward): Likewise.
	(main): Don't call removed functions.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-06-23 20:12:33 +00:00
Roland McGrath
93a6d08204 Clean up stack-coloring macros. 2014-06-20 19:50:16 -07:00
Joseph Myers
9bc6103d04 Include <kernel-features.h> explicitly where required.
This patch makes files using __ASSUME_* macros include
<kernel-features.h> explicitly, rather than relying on some other
header (such as tls.h, lowlevellock.h or pthreadP.h) to include it
implicitly.  (I omitted cases where I've already posted or am testing
the patch that stops the file from needing __ASSUME_* at all.)  This
accords with the general principle of making source files include the
headers for anything they use, and also helps make it safe to remove
<kernel-features.h> includes from any file that doesn't use
__ASSUME_* (some of those may be stray includes left behind after
increasing the minimum kernel version, others may never have been
needed or may have become obsolete after some other change).

Tested x86_64 that the disassembly of installed shared libraries is
unchanged by this patch.

	* nptl/pthread_cond_wait.c: Include <kernel-features.h>.
	* nptl/pthread_rwlock_timedrdlock.c: Likewise.
	* nptl/pthread_rwlock_timedwrlock.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/lowlevelrobustlock.c: Likewise.
	* nscd/nscd.c: Likewise.
	* sysdeps/i386/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/powerpc/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/sh/nptl/tcb-offsets.sym: Likewise.
	* sysdeps/x86_64/nptl/tcb-offsets.sym: Likewise.
2014-06-20 23:24:00 +00:00
Stefan Liebler
3ef6b85059 [BZ #6803] Set errno for scalbln, scalbn
Errno is not set and the testcases will fail.

Now the scalbln-aliases are removed in i386/m68
and the wrappers are used when calling the scalbln-functions.

On ia64 only scalblnf has its own implementation.
For scalbln and scalblnl the ieee754/dbl-64 and ieee754/ldbl-96 are used, thus
the wrappers are needed, too.
2014-06-20 07:48:20 +05:30
Joseph Myers
4ba7a00fe3 Fix __ieee754_logl (-LDBL_MAX) in FE_DOWNWARD mode (bug 17022).
This patch fixes __ieee754_logl (-LDBL_MAX) on x86_64 and x86 not to
subtract 1 from its argument and so cause spurious overflow in
FE_DOWNWARD mode.  (For any argument strictly less than -1, it doesn't
matter whether or not 1 is subtracted before computing log1p, as long
as the result doesn't overflow to -Inf.)

Tested x86_64 and x86.  (This particular case lacks test coverage,
since the testsuite doesn't cover -lieee, but it will be covered by
tests after the following patch to test pow in all rounding modes,
which was the context in which this bug was found.)

	[BZ #17022]
	* sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Do not subtract 1
	from arguments -2 or below.
	* sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise.
	* sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise.
2014-06-18 12:32:01 +00:00
Joseph Myers
91c03c5389 Add CFI to x86 ceil / floor / trunc (bug 16681).
This patch adds CFI to the sysdeps/i386/fpu/ implementations of ceil,
floor and trunc functions, for consistency with other x86 .S files in
glibc which have CFI for stack adjustments.

Tested x86.

	[BZ #16681]
	* sysdeps/i386/fpu/s_ceil.S (__ceil): Add CFI.
	* sysdeps/i386/fpu/s_ceilf.S (__ceilf): Likewise.
	* sysdeps/i386/fpu/s_ceill.S (__ceill): Likewise.
	* sysdeps/i386/fpu/s_floor.S (__floor): Likewise.
	* sysdeps/i386/fpu/s_floorf.S (__floorf): Likewise.
	* sysdeps/i386/fpu/s_floorl.S (__floorl): Likewise.
	* sysdeps/i386/fpu/s_trunc.S (__trunc): Likewise.
	* sysdeps/i386/fpu/s_truncf.S (__truncf): Likewise.
	* sysdeps/i386/fpu/s_truncl.S (__truncl): Likewise.
2014-06-16 22:54:46 +00:00
Roland McGrath
f6b07b3d48 Move i386 code out of nptl/ subdirectory. 2014-06-12 10:08:24 -07:00
Joseph Myers
f8ba1b5654 Fix log2 (1) in round-downward mode (bug 17042).
As with other issues of this kind, bug 17042 is log2 (1) wrongly
returning -0 instead of +0 in round-downward mode because of
implementations effectively in terms of log1p (x - 1).  This patch
fixes the issue in the same way used for log and log10.

Tested x86_64 and x86 and ulps updated accordingly.  Also tested for
mips64 to confirm a fix was needed for ldbl-128 and to validate that
fix (also applied to ldbl-128ibm since that version of log2l is
essentially the same as the ldbl-128 one).

	[BZ #17042]
	* sysdeps/i386/fpu/e_log2.S (__ieee754_log2): Take absolete value
	when x - 1 is zero.
	* sysdeps/i386/fpu/e_log2f.S (__ieee754_log2f): Likewise.
	* sysdeps/i386/fpu/e_log2l.S (__ieee754_log2l): Likewise.
	* sysdeps/ieee754/ldbl-128/e_log2l.c (__ieee754_log2l): Return
	0.0L for an argument of 1.0L.
	* sysdeps/ieee754/ldbl-128ibm/e_log2l.c (__ieee754_log2l):
	Likewise.
	* sysdeps/x86_64/fpu/e_log2l.S (__ieee754_log2l): Take absolute
	value when x - 1 is zero.
	* math/libm-test.inc (log2_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-06-10 12:07:15 +00:00
Joseph Myers
b72592e75f Fix log10 (1) in round-downward mode (bug 16977).
As with various other issues of this kind, bug 16977 is log10 (1)
wrongly returning -0 rather than +0 in round-downward mode because of
an implementation effectively in terms of log1p (x - 1).  This patch
fixes the issue in the same way used for log.

Tested x86_64 and x86 and ulps updated accordingly.  Also tested for
mips64 to confirm a fix was needed for ldbl-128 and to validate that
fix (also applied to ldbl-128ibm since that version of logl is
essentially the same as the ldbl-128 one).

	[BZ #16977]
	* sysdeps/i386/fpu/e_log10.S (__ieee754_log10): Take absolute
	value when x - 1 is zero.
	* sysdeps/i386/fpu/e_log10f.S (__ieee754_log10f): Likewise.
	* sysdeps/i386/fpu/e_log10l.S (__ieee754_log10l): Likewise.
	* sysdeps/ieee754/ldbl-128/e_log10l.c (__ieee754_log10l): Return
	0.0L for an argument of 1.0L.
	* sysdeps/ieee754/ldbl-128ibm/e_log10l.c (__ieee754_log10l):
	Likewise.
	* sysdeps/x86_64/fpu/e_log10l.S (__ieee754_log10l): Take absolute
	value when x - 1 is zero.
	* math/libm-test.inc (log10_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-05-23 12:07:50 +00:00
Roland McGrath
1b731c35e6 Move NPTL public ABI headers for x86 to sysdeps/x86/nptl/. 2014-05-14 09:44:56 -07:00
Joseph Myers
1a84c3d6d4 Fix log1pl (LDBL_MAX) in FE_UPWARD mode (bug 16564).
Bug 16564 is spurious overflow of log1pl (LDBL_MAX) in FE_UPWARD mode,
resulting from log1pl adding 1 to its argument (for arguments not
close to 0), which overflows in that mode.  This patch fixes this by
avoiding adding 1 to large arguments (precisely what counts as large
depends on the floating-point format).

Tested x86_64 and x86, and spot-checked log1pl tests on mips64 and
powerpc64.

	[BZ #16564]
	* sysdeps/i386/fpu/s_log1pl.S (__log1pl): Do not add 1 to positive
	arguments with exponent 65 or above.
	* sysdeps/ieee754/ldbl-128/s_log1pl.c (__log1pl): Do not add 1 to
	arguments 0x1p113L or above.
	* sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Do not add 1
	to arguments 0x1p107L or above.
	* sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Do not add 1 to
	positive arguments with exponent 65 or above.
	* math/auto-libm-test-in: Add more tests of log1p.
	* math/auto-libm-test-out: Regenerated.
2014-05-14 12:38:56 +00:00
Joseph Myers
01dbacd22a Fix cacos (+Inf + finite*i) in round-downward mode (bug 16928).
According to C99/C11 Annex G, cacos applied to a value with real part
+Inf and finite imaginary part should produce a result with real part
+0.  glibc wrongly produces a result with real part -0 in FE_DOWNWARD
mode.  This patch fixes this by checking for zero results in the
relevant case of non-finite arguments (where there should never be a
result with -0 real part), and converts the tests of cacos to
ALL_RM_TEST.

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16928]
	* math/s_cacos.c (__cacos): Ensure zero real part of result from
	non-finite arguments is +0.
	* math/s_cacosf.c (__cacosf): Likewise.
	* math/s_cacosl.c (__cacosl): Likewise.
	* math/libm-test.inc (cacos_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-05-14 12:37:24 +00:00
Joseph Myers
913d03c864 Fix acosh (1) in round-downward mode (bug 16927).
According to C99 and C11 Annex F, acosh (1) should be +0 in all
rounding modes.  However, some implementations in glibc wrongly return
-0 in round-downward mode (which is what you get if you end up
computing log1p (-0), via 1 - 1 being -0 in round-downward mode).
This patch fixes the problem implementations, by correcting the test
for an exact 1 value in the ldbl-96 implementation to allow for the
explicit high bit of the mantissa, and by inserting fabs instructions
in the i386 implementations; tests of acosh are duly converted to
ALL_RM_TEST.  I believe all the other sysdeps/ieee754 implementations
are already OK (I haven't checked the ia64 versions, but if buggy then
that will be obvious from the results of test runs after this patch is
in).

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16927]
	* sysdeps/i386/fpu/e_acosh.S (__ieee754_acosh): Use fabs on x-1
	value.
	* sysdeps/i386/fpu/e_acoshf.S (__ieee754_acoshf): Likewise.
	* sysdeps/i386/fpu/e_acoshl.S (__ieee754_acoshl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_acoshl.c (__ieee754_acoshl): Correct
	for explicit high bit of mantissa when testing for argument equal
	to 1.
	* math/libm-test.inc (acosh_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-05-14 12:35:40 +00:00
Joseph Myers
77d08acaad Include SSE state in i386 fenv_t (bug 16064).
This patch fixes bug 16064, i386 fenv_t not including SSE state, using
the technique suggested there of storing the state in the existing
__eip field of fenv_t to avoid needing to increase the size of fenv_t
and add new symbol versions.  The included testcase, which previously
failed for i386 (but passed for x86_64), illustrates how the previous
state was buggy.

This patch causes the SSE state to be included *to the extent it is on
x86_64*.  Where some state should logically be included but isn't for
x86_64 (see bug 16068), this patch does not cause it to be included
for i386 either.  The idea is that any patch fixing that bug should
fix it for both x86_64 and i386 at once.

Tested i386 and x86_64.  (I haven't tested the case of a CPU without
SSE2 disabling the test.)

	[BZ #16064]
	* sysdeps/i386/fpu/fegetenv.c: Include <unistd.h>, <ldsodefs.h>
	and <dl-procinfo.h>.
	(__fegetenv): Save SSE state in envp->__eip if supported.
	* sysdeps/i386/fpu/feholdexcpt.c (feholdexcept): Save SSE state in
	envp->__eip if supported.
	* sysdeps/i386/fpu/fesetenv.c: Include <unistd.h>, <ldsodefs.h>
	and <dl-procinfo.h>.
	(__fesetenv): Always set __eip, __cs_selector, __opcode,
	__data_offset and __data_selector in environment to 0.  Set SSE
	state if supported.
	* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
	test-fenv-sse.
	[$(subdir) = math] (CFLAGS-test-fenv-sse.c): Add -msse2
	-mfpmath=sse.
	* sysdeps/x86/fpu/test-fenv-sse.c: New file.
2014-05-09 16:59:56 +00:00
Roland McGrath
fcccd51286 Factor mmap/munmap of PT_LOAD segments out of _dl_map_object_from_fd et al. 2014-04-03 10:47:14 -07:00
Joseph Myers
a84e78c8b3 Fix catan, catanh, __ieee754_logf in round-downward mode (bug 16799, bug 16800).
This patch fixes incorrect results from catan and catanh of certain
special inputs in round-downward mode (bug 16799), and incorrect
results of __ieee754_logf (+/-0) in round-downward mode (bug 16800)
that show up through catan/catanh when tested in all rounding modes,
but not directly in the testing for logf because the bug gets hidden
by the wrappers.

Both bugs involve a zero that should be +0 being -0 instead: one
computed as (1-x)*(1+x) in the catan/catanh case, and one as (x-x) in
the logf case.  The fixes ensure positive zero is used.  Testing of
catan and catanh in all rounding modes is duly enabled.

I expect there are various other bugs in special cases in __ieee754_*
functions that are normally hidden by the wrappers but would show up
for testing with -lieee (or in future with -fno-math-errno if we
replace -lieee and _LIB_VERSION with compile-time redirection to new
*_noerrno symbol names).

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16799]
	[BZ #16800]
	* math/s_catan.c (__catan): Avoid passing -0 denominator to atan2
	with 0 numerator.
	* math/s_catanf.c (__catanf): Likewise.
	* math/s_catanh.c (__catanh): Likewise.
	* math/s_catanhf.c (__catanhf): Likewise.
	* math/s_catanhl.c (__catanhl): Likewise.
	* math/s_catanl.c (__catanl): Likewise.
	* sysdeps/ieee754/flt-32/e_logf.c (__ieee754_logf): Always divide
	by positive zero when computing -Inf result.
	* math/libm-test.inc (catan_test): Use ALL_RM_TEST.
	(catanh_test): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-04-02 17:41:02 +00:00
Joseph Myers
6f05bafeba Fix clog / clog10 sign of zero result in round-downward mode (bug 16789).
This patch fixes bug 16789, incorrect sign of (real part) zero result
from clog and clog10 in round-downward mode, arising from that real
part being computed as 0 - 0.  To ensure that an underflow exception
occurred, the code used an underflowing value (the next term in the
series for log1p) in arithmetic computing the real part of the result,
yielding the problematic 0 - 0 computation in some cases even when the
mathematical result would be small but positive.  The patch changes
this code to use the math_force_eval approach to ensuring that an
underflowing computation actually occurs.  Tests of clog and clog10
are enabled in all rounding modes.

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16789]
	* math/s_clog.c (__clog): Use math_force_eval to ensure underflow
	instead of using underflowing value in computing result.
	* math/s_clog10.c (__clog10): Likewise.
	* math/s_clog10f.c (__clog10f): Likewise.
	* math/s_clog10l.c (__clog10l): Likewise.
	* math/s_clogf.c (__clogf): Likewise.
	* math/s_clogl.c (__clogl): Likewise.
	* math/libm-test.inc (clog_test): Use ALL_RM_TEST.
	(clog10_test): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-04-02 13:10:19 +00:00
Joseph Myers
03a7091fa2 Fix x86/x86_64 expl/exp10l spurious underflows (bug 16348).
This patch fixes bug 16348, spurious underflows from x86/x86_64 expl
on arguments close to 0.  These implementations effectively use expm1
(on the fractional part of the argument) internally, so resulting in
spurious underflows when the result is very close to 1.  For arguments
small enough that the round-to-nearest correct result is 1, this patch
uses 1+x instead.

These implementations are also used for exp10l and so the patch fixes
similar issues there (the 0x1p-67 threshold being small enough to be
correct for exp10l as well as expl).  But because of spurious
underflows in other exp10 implementations (bug 16560), the tests
aren't added for exp10 at this point - they can be added when the
other exp10 parts of that bug are fixed.

Tested x86_64 and x86; no ulps updates needed.

	[BZ #16348]
	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [!USE_AS_EXPM1L]: Use
	1+x for argument with exponent below -67.
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [!USE_AS_EXPM1L]:
	Likewise.
	* math/auto-libm-test-in: Add more tests of exp.
	* math/auto-libm-test-out: Regenerated.
2014-03-27 18:41:14 +00:00
Joseph Myers
046651c168 Relax gen-auto-libm-tests may-underflow rules, test log1p in all rounding modes.
gen-auto-libm-tests presently allows but does not require underflow
exceptions for results with magnitude in the range (greatest
subnormal, least normal].

In some cases, the magnitude of the exact result is very slightly
above the least normal, but rounding in the implementation results in
it effectively computing an infinite-precision result that is slightly
below the least normal, so raising an underflow exception.  This is in
accordance with the documented accuracy goals, but results in
testsuite failures.

This patch changes the logic to allow underflows when the mathematical
result is up to 0.5ulp above the least normal (so in any case where
the round-to-nearest result is the least normal).  Ideally underflows
in all these cases would be accepted only when an underflow with the
actual result is consistent with the rounding mode (in FE_TOWARDZERO
mode, a return value of the least normal implies that the
infinite-precision result did not underflow so there should be no
underflow exception, for example), so as to match the documented goals
more precisely - whereas at present the tests for exceptions are
completely independent of the tests of the returned values.  (The same
applies to overflow exceptions as well - they too should be checked
for consistency with the result, as in FE_TOWARDZERO mode a result
1ulp below the largest finite value should be inconsistent with an
overflow exception and cause a failure with overflow rather than
simply being considered a 1ulp error when overflow is expected.)  But
the present patch at least deals with the cases causing spurious
failures so that (a) certain existing tests no longer need to be
marked as having spurious exceptions (such markings in
auto-libm-test-in end up applying to more cases than just those they
are needed for) and (b) log1p can be tested in all rounding modes
without introducing more such failures.  This patch duly moves tests
of log1p to ALL_RM_TEST.

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16357]
	[BZ #16599]
	* math/gen-auto-libm-tests.c (fp_format_desc): Add field
	min_plus_half.
	(fp_formats): Update initializers.
	(init_fp_formats): Initialize new field.
	(output_for_one_input_case): Allow underflow for results up to
	min_plus_half.
	* math/libm-test.inc (log1p_test): Use ALL_RM_TEST.
	* math/auto-libm-test-in: Don't mark some underflows from asin and
	atanh as spurious.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-03-25 12:26:06 +00:00
Joseph Myers
b376a11a19 Fix dbl-64 exp overflow/underflow in non-default rounding modes (bug 16284).
The dbl-64 version of exp needs round-to-nearest mode for its internal
computations, but that has the consequence of inappropriate
overflowing and underflowing results in other rounding modes.  This
patch fixes this by recomputing the relevant results in cases where
the round-to-nearest result overflows to infinity or underflows to
zero (most of the diffs are actually just consequent reindentation).
Tests are enabled in all rounding modes for complex functions using
exp - but not for cexp because it turns out there are bugs causing
spurious underflows for cexp for some tests, which will need to be
fixed separately (I suspect ccos ccosh csin csinh ctan ctanh have
similar bugs, just not shown by the present set of test inputs).

Tested x86_64 and x86 and ulps updated accordingly.

	[BZ #16284]
	* sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Use original
	rounding mode to recompute results that overflow to infinity or
	underflow to zero.
	* math/auto-libm-test-in: Don't mark tests as expected to fail for
	bug 16284.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (ccos_test): Use ALL_RM_TEST.
	(ccosh_test): Likewise.
	(csin_test_data): Use plus_oflow.
	(csin_test): Use ALL_RM_TEST.
	(csinh_test_data): Use plus_oflow.
	(csinh_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-03-24 12:18:45 +00:00
Joseph Myers
f7be737659 Fix log (1) in round-downward mode (bug 16731).
According to ISO C Annex F, log (1) should be +0 in all rounding
modes, but some implementations in glibc wrongly return -0 in
round-downward mode (mapping to log1p (x - 1) is problematic because 1
- 1 is -0 in round-downward mode, and log1p (-0) is -0).  This patch
fixes this.  (It helps with some implementations of other functions
such as acosh, log2 and log10 that call out to log, but not enough to
enable all-rounding-modes testing for those functions without further
fixes to other implementations of them.)

Tested x86_64 and x86 and ulps updated accordingly, and did spot tests
for mips64 for the ldbl-128 fix, and i586 for the sysdeps/i386/fpu
implementations shadowed by those in sysdeps/i386/i686/fpu.

	[BZ #16731]
	* sysdeps/i386/fpu/e_log.S (__ieee754_log): Take absolute value
	when x - 1 is zero.
	* sysdeps/i386/fpu/e_logf.S (__ieee754_logf): Likewise.
	* sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Likewise.
	* sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise.
	* sysdeps/ieee754/dbl-64/e_log.c (__ieee754_log): Return +0 when
	argument is 1.
	* sysdeps/ieee754/ldbl-128/e_logl.c (__ieee754_logl): Likewise.
	* sysdeps/x86_64/fpu/e_logl.S: Take absolute value when x - 1 is
	zero.
	* math/libm-test.inc (log_test): Use ALL_RM_TEST.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-03-21 18:13:58 +00:00
Joseph Myers
8c92dfff41 Test most libm functions in all rounding modes.
This patch makes libm-test.inc tests of most functions use ALL_RM_TEST
unless there was some reason to defer that change for a particular
function.

I started out planning to defer the change for pow (bug 16315), cexp /
ccos / ccosh / csin / csinh (likely fallout from exp, bug 16284) and
cpow (exact expectations for signs of exact zero results not wanted).
Testing on x86_64 and x86 showed additional failures for acosh, cacos,
catan, catanh, clog, clog10, jn, log, log10, log1p, log2, tgamma, yn,
so making the change for those functions was deferred as well, pending
investigation to show which of these represent distinct bugs (some
such bugs may already be filed) and appropriate fixing / XFAILing.
Failures include wrong signs of zero results, errors slightly above
the 9ulp bound (in such cases it may make sense for functions to set
round-to-nearest internally to reduce error accumulation), large
errors and incorrect overflow/underflow for the rounding mode (with
consequent missing errno settings in some cases).  It's possible some
could be issues with test expectations, though I didn't notice any
that were obviously like that (I added NO_TEST_INLINE for cases that
were failing for ildoubl on x86 and where it seemed reasonable for
them to fail for the fast-math inlines).

There may of course be failures on other architectures for functions
that didn't fail on x86_64 or x86, in which case the usual rule
applies: file a bug (preferably identifying the underlying problem
function, in cases where function A calls function B and a problem
with function B may present in the test results for function A) if not
already in Bugzilla then fix or XFAIL.

Tested x86_64 and x86 and ulps updated accordingly.

	* math/libm-test.inc (asinh_test): Use ALL_RM_TEST.
	(atan_test): Likewise.
	(atanh_test_data): Use NO_TEST_INLINE for two tests.
	(atanh_test): Use ALL_RM_TEST.
	(atan2_test_data): Likewise.
	(cabs_test): Likewise.
	(cacosh_test): Likewise.
	(carg_test): Likewise.
	(casin_test): Likewise.
	(casinh_test): Likewise.
	(cbrt_test): Likewise.
	(csqrt_test): Likewise.
	(erf_test): Likewise.
	(erfc_test): Likewise.
	(pow10_test): Likewise.
	(exp2_test): Likewise.
	(hypot_test): Likewise.
	(j0_test): Likewise.
	(j1_test): Likewise.
	(lgamma_test): Likewise.
	(gamma_test): Likewise.
	(sincos_test): Likewise.
	(tanh_test): Likewise.
	(y0_test): Likewise.
	(y1_test): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-03-21 00:03:38 +00:00
Joseph Myers
600fa36158 Fix nextafter overflow in non-default rounding modes (bug 16677).
ISO C requires the result of nextafter to be independent of the
rounding mode, even when underflow or overflow occurs.  This patch
fixes the bug in various nextafter implementations that, having done
an overflowing computation to force an overflow exception (correct),
they then return the result of that computation rather than an
infinity computed some other way (incorrect, when the overflowing
result of arithmetic with that sign and rounding mode is finite but
the correct result is infinite) - generally by falling through to
existing code to return a value that in fact is correct for this case
(but was computed by an integer increment and so without generating
the exceptions required).  Having fixed the bug, the previously
deferred conversion of nextafter testing in libm-test.inc to
ALL_RM_TEST is also included.

Tested x86_64 and x86; also spot-checked results of nextafter tests
for powerpc32 and mips64 to test the ldbl-128ibm and ldbl-128
changes.  (The m68k change is untested.)

	[BZ #16677]
	* math/s_nextafter.c (__nextafter): Do not return value from
	overflowing computation.
	* sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Likewise.
	* sysdeps/ieee754/flt-32/s_nextafterf.c (__nextafterf): Likewise.
	* sysdeps/ieee754/ldbl-128/s_nextafterl.c (__nextafterl):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c (__nextafterl):
	Likewise.
	* sysdeps/m68k/m680x0/fpu/s_nextafterl.c (__nextafterl): Likewise.
	* math/libm-test.inc (nextafter_test): Use ALL_RM_TEST.
2014-03-11 22:24:00 +00:00
Joseph Myers
e6b6a85705 Don't include individual test ulps in libm-test-ulps.
As recently discussed
<https://sourceware.org/ml/libc-alpha/2014-02/msg00670.html>, it
doesn't seem particularly useful for libm-test-ulps files to contain
huge amounts of data on ulps for individual tests; just the global
maximum observed ulps for each function, together with the
verification of exceptions, errno and special results such as
infinities and NaNs for each test, suffices to verify that a
function's behavior on the given test inputs is within the expected
accuracy.  Removing this data reduces source tree churn caused by
updates to these files when libm tests are added, and reduces the
frequency with which testsuite additions actually need libm-test-ulps
changes at all.

Accordingly, this patch removes that data, so that individual tests
get checked against the global bounds for the given function and only
generate an error if those are exceeded.  Tested x86_64 (including
verifying that if an ulps value is artificially reduced, the tests do
indeed fail as they should and "make regen-ulps" generates the
expected changes).

	* math/libm-test.inc (struct ulp_data): Don't refer to ulps for
	individual tests in comment.
	(libm-test-ulps.h): Don't refer to test_ulps in #include comment.
	(prev_max_error): New variable.
	(prev_real_max_error): Likewise.
	(prev_imag_max_error): Likewise.
	(compare_ulp_data): Don't refer to test names in comment.
	(find_test_ulps): Remove function.
	(find_function_ulps): Likewise.
	(find_complex_function_ulps): Likewise.
	(init_max_error): Take function name as argument.  Look up ulps
	for that function.
	(print_ulps): Remove function.
	(print_max_error): Use prev_max_error instead of calling
	find_function_ulps.
	(print_complex_max_error): Use prev_real_max_error and
	prev_imag_max_error instead of calling find_complex_function_ulps.
	(check_float_internal): Take max_ulp parameter instead of calling
	find_test_ulps.  Don't call print_ulps.
	(check_float): Update call to check_float_internal.
	(check_complex): Update calls to check_float_internal.
	(START): Pass argument to init_max_error.
	* math/gen-libm-test.pl (%results): Don't include "kind"
	information.
	(parse_ulps): Don't handle ulps of individual tests.
	(print_ulps_file): Likewise.
	(output_ulps): Likewise.
	* math/README.libm-test: Update.
	* manual/libm-err-tab.pl (parse_ulps): Don't handle ulps of
	individual tests.
	* sysdeps/aarch64/libm-test-ulps: Remove individual test ulps.
	* sysdeps/alpha/fpu/libm-test-ulps: Likewise.
	* sysdeps/arm/libm-test-ulps: Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Likewise.
	* sysdeps/ia64/fpu/libm-test-ulps: Likewise.
	* sysdeps/m68k/coldfire/fpu/libm-test-ulps: Likewise.
	* sysdeps/m68k/m680x0/fpu/libm-test-ulps: Likewise.
	* sysdeps/microblaze/libm-test-ulps: Likewise.
	* sysdeps/mips/mips32/libm-test-ulps: Likewise.
	* sysdeps/mips/mips64/libm-test-ulps: Likewise.
	* sysdeps/powerpc/fpu/libm-test-ulps: Likewise.
	* sysdeps/powerpc/nofpu/libm-test-ulps: Likewise.
	* sysdeps/s390/fpu/libm-test-ulps: Likewise.
	* sysdeps/sh/libm-test-ulps: Likewise.
	* sysdeps/sparc/fpu/libm-test-ulps: Likewise.
	* sysdeps/tile/libm-test-ulps: Likewise.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.

	* sysdeps/hppa/fpu/libm-test-ulps: Remove individual test ulps.
2014-03-05 15:02:38 +00:00
Joseph Myers
63689d6165 Move tests of clog10 from libm-test.inc to auto-libm-test-in.
This patch moves tests of clog10 to auto-libm-test-in.  Note that this
means gen-auto-libm-tests will now depend on the recent MPC 1.0.2
release which added a fix for a bug that made gen-auto-libm-tests hang
for clog10.  (It still can't conveniently be used for cacos cacosh
casin casinh catan catanh csin csinh because of extreme slowness of
those functions for special cases in MPC; at least some slow cases of
csin / csinh are fixed in MPC trunk, but not in a release.)

Tested x86_64 and x86 and ulps updated accordingly.

	* math/auto-libm-test-in: Add tests of clog10.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (clog10_test_data): Use AUTO_TESTS_c_c.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-02-19 14:26:29 +00:00
Joseph Myers
a4fb786185 Fix gen-auto-libm-tests sticky bit setting for negative results.
gen-auto-libm-tests has a bug in the logic for setting a sticky bit
based on the ternary value from MPFR: it is correct for positive
results, but for negative results mpz_setbit acts as if a two's
complement representation is used, whereas the low bit needs setting
based on the sign-magnitude representation GMP actually uses.  (This
showed up in converting fma tests to use auto-libm-test-in /
gen-auto-libm-tests.)

This patch fixes the problem by negating the mpz_t value to set its
low bit.  There are lots of changes to auto-libm-test-out (mainly 1ulp
fixes to ldbl-128 expected results), but only a few ulps updates are
needed on x86 / x86_64.  In one case, a corrected expectation showed
up a spurious underflow exception where the correct result is slightly
outside the underflowing range.

Tested x86_64 and x86 and ulps updated accordingly.

	* math/gen-auto-libm-tests.c (adjust_real): Ensure integers are
	non-negative before setting low bit.
	* math/auto-libm-test-in: Mark one asin test possibly having
	spurious underflow.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-02-18 14:45:41 +00:00
Ondřej Bílka
a1ffb40e32 Use glibc_likely instead __builtin_expect. 2014-02-10 15:07:12 +01:00
Yuriy Kaminskiy
66671c84d5 Fix a thinko/typo in i686's memmove (aka __memmove_ia32).
* sysdeps/i386/i686/memmove.S (memmove): Compare distance between
	SRC and DEST against LEN.
2014-01-09 09:49:54 +13:00
Andreas Jaeger
75595dcf8a Update ULPs for i386
Update based on testing with GCC 4.8.1 on Intel i7
2014-01-05 21:48:54 +01:00
Joseph Myers
97b9a0090e Regenerate x86 / x86_64 ulps. 2014-01-01 14:34:38 +00:00
Allan McRae
d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Joseph Myers
5b0626b9c5 Fix x86 / x86_64 expl / expl10l wild results in directed rounding modes (bug 16356).
This patch fixes bug 16356, bad results from x86 / x86_64 expl /
exp10l in directed rounding modes, the most serious of the bugs shown
up by my patch expanding libm test coverage.  When I fixed bug 16293,
I thought it was only necessary to set round-to-nearest when using
frndint in expm1 functions, because in other cases the cancellation
error from having the resulting fractional part close to 1 or -1 would
not be significant.  However, in expl and exp10l, the way the final
fractional part gets computed (something more complicated than a
simple subtraction, because more precision is needed than you'd get
that way) can result in a value outside the range [-1, 1] when the
argument to frndint was very close to an integer and was rounded the
"wrong" way because of the rounding mode - and the f2xm1 instruction
has undefined results if its argument is outside [-1, 1], so resulting
in the large errors seen.  So this patch removes the USE_AS_EXPM1L
conditionals on the round-to-nearest settings, so all of expl, expm1l
and exp10l now get round-to-nearest used for frndint (meaning the
final fractional part can at most be slightly above 0.5 in
magnitude).  Associated tests of exp and exp10 are added and testing
of exp10 in directed rounding modes enabled.

Tested x86_64 and x86 and ulps updated accordingly.

	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL): Also set
	round-to-nearest for [!USE_AS_EXPM1L].
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL): Likewise.
	* math/auto-libm-test-in: Do not expect cosh tests to fail.  Add
	more tests of exp and exp10.  Expect some exp10 tests to miss
	exceptions or fail in directed rounding modes.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (exp10_tonearest_test_data): New array.
	(exp10_test_tonearest): New function.
	(exp10_towardzero_test_data): New array.
	(exp10_test_towardzero): New function.
	(exp10_downward_test_data): New array.
	(exp10_test_downward): New function.
	(exp10_upward_test_data): New array.
	(exp10_test_upward): New function.
	(main): Call the new functions.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-21 13:07:16 +00:00
Joseph Myers
31e3a40588 Add more libm-test coverage of [a-c]* real functions.
Various libm functions have inadequate test coverage in libm-test.inc
/ auto-libm-test-in - failing to cover all the usual special cases
(infinities, NaNs, zero, large and small finite values, subnormals) as
well as a reasonable range of ordinary inputs and, where appropriate,
inputs close to the thresholds for underflow and overflow.

This patch improves test coverage for real functions [a-c]* (with the
expectation of adding more coverage for other functions later).

Tested x86_64 and x86 and ulps updated accordingly (and eight glibc
bugs and one C11 DR filed for issues found in the process).

	* math/auto-libm-test-in: Add more tests of acos, acosh, asin,
	asinh, atan, atan2, atanh, cbrt, cos and cosh.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (acosh_test_data): Add more tests.
	(atanh_test_data): Likewise.
	(ceil_test_data): Likewise.
	(copysign_test_data): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-20 21:03:39 +00:00
Joseph Myers
b7867a3bfb Move tests of cpow from libm-test.inc to auto-libm-test-in.
This patch moves tests of cpow to auto-libm-test-in, adding the
required support to gen-auto-libm-tests.

Tested x86_64 and x86 and ulps updated accordingly.

	* math/auto-libm-test-in: Add tests of cpow.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (cpow_test_data): Use AUTO_TESTS_cc_c.
	* * math/gen-auto-libm-tests.c (func_calc_method): Add value
	mpc_cc_c.
	(func_calc_desc): Add mpc_cc_c union field.
	(test_functions): Add cpow.
	(special_fill_2pi): New function.
	(special_real_inputs): Add 2pi.
	(calc_generic_results): Handle mpc_cc_c.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-20 12:35:10 +00:00
Joseph Myers
7fda568229 Move various TEST_c_c tests from libm-test.inc to auto-libm-test-inc.
This patch moves tests of ccos, ccosh, cexp, clog, csqrt, ctan and
ctanh to auto-libm-test-in, adding the required support to
gen-auto-libm-tests.  Other TEST_c_c functions aren't moved for now
(although the relevant table entries are put in gen-auto-libm-tests
for it to know how to handle them): clog10 because of a known MPC bug
causing it to hang for at least some pure imaginary inputs (fixed in
SVN, but I'd rather not rely on unreleased versions of MPFR or MPC
even if relying on very recent releases); the inverse trig and
hyperbolic functions because of known slowness in special cases; and
csin / csinh because of observed slowness that I need to investigate
and report to the MPC maintainers.  Slowness can be bypassed by moving
to incremental generation (only for new / changed tests) rather than
regenerating the whole of auto-libm-test-out every time, but that
needs implementing.  (This patch takes the time for running
gen-auto-libm-tests from about one second to seven, on my system,
which I think is reasonable.  The slow functions would make it take
several minutes at least, which seems unreasonable.)

Tested x86_64 and x86 and ulps updated accordingly.

	* math/auto-libm-test-in: Add tests of ccos, ccosh, cexp, clog,
	csqrt, ctan and ctanh.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (TEST_COND_x86_64): New macro.
	(TEST_COND_x86): Likewise.
	(ccos_test_data): Use AUTO_TESTS_c_c.
	(ccosh_test_data): Likewise.
	(cexp_test_data): Likewise.
	(clog_test_data): Likewise.
	(csqrt_test_data): Likewise.
	(ctan_test_data): Likewise.
	(ctan_tonearest_test_data): Likewise.
	(ctan_towardzero_test_data): Likewise.
	(ctan_downward_test_data): Likewise.
	(ctan_upward_test_data): Likewise.
	(ctanh_test_data): Likewise.
	(ctanh_tonearest_test_data): Likewise.
	(ctanh_towardzero_test_data): Likewise.
	(ctanh_downward_test_data): Likewise.
	(ctanh_upward_test_data): Likewise.
	* math/gen-auto-libm-tests.c (func_calc_method): Add value
	mpc_c_c.
	(func_calc_desc): Add mpc_c_c union field.
	(FUNC_mpc_c_c): New macro.
	(test_functions): Add cacos, cacosh, casin, casinh, catan, catanh,
	ccos, ccosh, cexp, clog, clog10, csin, csinh, csqrt, ctan and
	ctanh.
	(special_fill_min_subnorm_p120): New function.
	(special_real_inputs): Add min_subnorm_p120.
	(calc_generic_results): Handle mpc_c_c.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-20 12:32:44 +00:00
Joseph Myers
6f6fc48226 Move tests of sincos from libm-test.inc to auto-libm-test-in.
This patch moves tests of sincos to auto-libm-test-in, adding the
required support to gen-auto-libm-tests.

Tested x86_64 and x86 and ulps updated accordingly.

(auto-libm-test-out diffs omitted below.)

	* math/auto-libm-test-in: Add tests of sincos.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (sincos_test_data): Use AUTO_TESTS_fFF_11.
	* math/gen-auto-libm-tests.c (func_calc_method): Add value
	mpfr_f_11.
	(func_calc_desc): Add mpfr_f_11 union field.
	(test_functions): Add sincos.
	(calc_generic_results): Handle mpfr_f_11.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-19 17:21:01 +00:00
Joseph Myers
335ee09231 Disable libm-test test name beautification for M_* constants.
math/gen-libm-test.pl has code to beautify names of various constants,
transforming the source form in libm-test.inc into the version
appearing in test names in libm-test-ulps files.

This has become decreasingly relevant over time for the M_* constants,
first as I changed the test names so only the arguments and not the
expected results appeared in them, then as tests have moved to
auto-libm-test-* so that automatically generated hex float constants
get used instead of M_* in test inputs.

This patch removes the beautification for all M_* constants.  Tested
x86_64 and x86 and ulps updated accordingly.  Even the one case where
this affected the name in the ulps files will disappear once complex
function tests are moved to auto-libm-test-*.

	* math/gen-libm-test.pl (%beautify): Remove M_* constants.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-19 14:59:22 +00:00
Joseph Myers
f88acd39da Fix x86/x86_64 expm1 inaccuracy near 0 in directed rounding modes (bug 16293).
Bug 16293 is inaccuracy of x86/x86_64 versions of expm1, near 0 in
directed rounding modes, that arises from frndint rounding the
exponent to 1 or -1 instead of 0, resulting in large cancellation
error.  This inaccuracy in turn affects other functions such as sinh
that use expm1.  This patch fixes the problem by setting
round-to-nearest mode temporarily around the affected calls to
frndint.  I don't think this is needed for other uses of frndint, such
as in exp itself, as only for expm1 is the cancellation error
significant.

Tested x86_64 and x86 and ulps updated accordingly.

	* sysdeps/i386/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]: Set
	round-to-nearest mode when using frndint.
	* sysdeps/i386/fpu/s_expm1.S (__expm1): Likewise.
	* sysdeps/i386/fpu/s_expm1f.S (__expm1f): Likewise.
	* sysdeps/x86_64/fpu/e_expl.S (IEEE754_EXPL) [USE_AS_EXPM1L]:
	Likewise.
	* math/auto-libm-test-in: Add more tests of expm1.  Do not expect
	sinh test to fail.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (TEST_COND_x86_64): Remove macro.
	(TEST_COND_x86): Likewise.
	(expm1_tonearest_test_data): New array.
	(expm1_test_tonearest): New function.
	(expm1_towardzero_test_data): New array.
	(expm1_test_towardzero): New function.
	(expm1_downward_test_data): New array.
	(expm1_test_downward): New function.
	(expm1_upward_test_data): New array.
	(expm1_test_upward): New function.
	(main): Run the new test functions.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-19 13:36:10 +00:00
Joseph Myers
f889953b44 Move tests of jn and yn from libm-test.inc to auto-libm-test-in.
This patch moves tests of jn and yn to auto-libm-test-in, adding the
required support for gen-auto-libm-tests (and adding a missing
assertion there and fixing logic that was broken for functions with
integer arguments).

Tested x86_64 and x86 and ulps updated accordingly.

	* math/auto-libm-test-in: Add tests of jn and yn.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (jn_test_data): Use AUTO_TESTS_if_f.
	(yn_test_data): Likewise.
	* math/gen-auto-libm-tests.c (func_calc_method): Add value
	mpfr_if_f.
	(func_calc_desc): Add mpfr_if_f union field.
	(FUNC_mpfr_if_f): New macro.
	(test_functions): Add jn and yn.
	(calc_generic_results): Assert type of second input for
	mpfr_ff_f.  Handle mpfr_if_f.
	(output_for_one_input_case): Disable all checking for arguments
	fitting floating-point types in case of an integer argument.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2013-12-18 17:59:29 +00:00
Joseph Myers
2dec468fd8 Fix ldbl-128 logl for subnormals (bug 16338).
This patch fixes bug 16338, ldbl-128 logl not handling subnormals
(with consequent inaccuracy for lgammal as well).  The fix is simply
to use __frexpl when determining the exponent, as done already in
log2l and log10l.  Given the lack of testing of small arguments to any
of the log* functions, appropriate tests are added for all of them.

Tested x86_64 and x86 and ulps updated accordingly, and spot tests
also run for mips64 to confirm the ldbl-128 fix.

Note that while this fixes lgammal inaccuracy for small positive
arguments, I suspect that there will still be problems with spurious
underflows in that case.

	* sysdeps/ieee754/ldbl-128/e_logl.c (__ieee754_logl): Use __frexpl
	to determine exponent and adjust argument to have exponent of -1.
	* math/auto-libm-test-in: Add more tests of log, log10, log1p and
	log2.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/x86_64/fpu/libm-test-ulps: Update.
2013-12-18 11:38:27 +00:00
Andreas Schwab
1818483b15 Remove use of SSE4.2 functions for strstr on i686
The SSE4.2 have been removed from x86_64 by commit 584b18eb.  This patch
fixes the build on i686, which attempts to use the removed files.
2013-12-18 14:28:30 +10:00
Joseph Myers
ff362e5b93 Move tests of atan2, hypot and pow from libm-test.inc to auto-libm-test-in. 2013-12-16 21:18:07 +00:00
Joseph Myers
9f0be4f8b5 Move tests of lgamma from libm-test.inc to auto-libm-test-in. 2013-12-08 23:56:28 +00:00
Joseph Myers
e47cc4e0ed Fix tgamma errno setting on underflow (bug 6810). 2013-12-05 14:01:41 +00:00
Joseph Myers
bbf37bdc12 Move TEST_f_f tests for [l-y]* functions from libm-test.inc to auto-libm-test-in. 2013-12-05 13:54:50 +00:00
Joseph Myers
699ff83712 Fix Bessel function error handling (bug 6807, bug 15901). 2013-12-04 14:39:37 +00:00
Joseph Myers
749008ff03 Fix exp missing underflows (bug 15268, bug 15425). 2013-12-03 21:49:56 +00:00
Joseph Myers
34e16df5a1 Fix erfc errno setting on underflow (bug 6786). 2013-12-03 16:25:18 +00:00
Joseph Myers
d8e2dbe3e3 Move TEST_f_f tests for [e-j]* functions from libm-test.inc to auto-libm-test-in. 2013-12-03 16:22:49 +00:00