Commit Graph

755 Commits

Author SHA1 Message Date
Joseph Myers
a5a326f660 Mark more libm tests with xfail-rounding:ldbl-128ibm.
This patch marks more libm tests as expected to fail for ldbl-128ibm
in non-default rounding modes.  Given this, my expm1l fix
<https://sourceware.org/ml/libc-alpha/2014-01/msg00135.html> and my
libgcc fix <http://gcc.gnu.org/ml/gcc-patches/2014-01/msg00157.html>
for spurious overflows, the remaining failures in test-ldouble.out
(for powerpc32 hard float) are small ulps, spurious underflow and
inexact exceptions (the former probably arising from libgcc bugs
though I haven't checked each case; the latter are barely meaningful
for this format anyway when basic arithmetic isn't correctly rounding,
though most of them are probably GCC bug 59412 which doesn't actually
involve long double), missing underflow exceptions from clog, ctan and
ctanh (probably one of the known bugs for another function), and logb
in round-downward mode (bug 887, though it's really a GCC bug that
we're not currently working around).

Tested for powerpc32 hard float.

	* math/auto-libm-test-in: Mark various tests with
	xfail-rounding:ldbl-128ibm.
	* math/auto-libm-test-out: Regenerated.
2014-01-07 22:41:58 +00:00
Joseph Myers
7dd009d865 Mark various libm tests with xfail-rounding:ldbl-128ibm.
This patch marks various libm tests with xfail-rounding:ldbl-128ibm,
where the failures appear to relate to GCC bug 59666 (bad libgcc
handling of directed rounding), so as to allow clean libm-test-ulps
regeneration without needing to edit out large ulps for various
functions manually.

Note that this only deals with the cases problematic for ulps
regeneration.  There are plenty of test failures left that do not
affect ulps regeneration - results that are infinities or NaNs but
should be finite, or vice versa, and missing and spurious exceptions -
which should also be resolved during the release testing period.

Tested for powerpc32 (hard float).

	* math/auto-libm-test-in: Mark various tests with
	xfail-rounding:ldbl-128ibm.
	* math/auto-libm-test-out: Regenerated.
2014-01-03 17:08:10 +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
64a17f1add Move tests of cabs and carg from libm-test.inc to auto-libm-test-in.
This patch moves tests of cabs and carg to auto-libm-test-in, adding
the required support to gen-auto-libm-tests.

Tested x86_64 and x86; no ulps updates needed.

	* math/auto-libm-test-in: Add tests of cabs and carg.
	* math/auto-libm-test-out: Regenerated.
	* math/libm-test.inc (cabs_test_data): Use AUTO_TESTS_c_f.
	(carg_test_data): Likewise.
	* math/gen-auto-libm-tests.c (func_calc_method): Add value
	mpc_c_f.
	(func_calc_desc): Add mpc_c_f union field.
	(test_functions): Add cabs and carg.
	(calc_generic_results): Handle mpc_c_f.
2013-12-19 21:28:30 +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
5953eb3ad7 Mark some hypot tests no-test-inline.
As needed on x86.

	* math/auto-libm-test-in: Mark some hypot tests no-test-inline.
	* math/auto-libm-test-out: Regenerated.
2013-12-18 11:46:16 +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
Joseph Myers
6432a5409c Fix dbl-64 hypot spurious underflows (bug 16314). 2013-12-17 13:43:40 +00:00
Joseph Myers
c88769dda4 Fix hypot handling of subnormals (bug 16316, bug 16330). 2013-12-17 13:42:13 +00:00
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
17dea1887f Fix exp2 errno setting on underflow (bug 16283). 2013-12-03 20:50:51 +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
Joseph Myers
176b0c7913 Move TEST_f_f tests for [a-c]* functions from libm-test.inc to auto-libm-test-in. 2013-11-30 22:04:13 +00:00
Joseph Myers
2a77a467b2 Fix exp10 errno setting on underflow (bug 6787). 2013-11-29 16:32:49 +00:00
Joseph Myers
ea3bc4e821 Fix x86 sqrt rounding (bug 14032). 2013-11-29 16:31:16 +00:00
Joseph Myers
0712c9d861 Test sqrt in all rounding modes. 2013-11-29 16:28:47 +00:00
Joseph Myers
ffb536d0ac Start generating libm tests automatically with MPFR. 2013-11-29 16:27:55 +00:00
Joseph Myers
3c1c46a64a Fix dbl-64 e_sqrt.c for non-default rounding modes (bug 16271). 2013-11-28 16:50:38 +00:00
Joseph Myers
73c1ce4fdb Make powerpc-nofpu floating-point state thread-local (bug 15483). 2013-11-19 13:39:56 +00:00
Chris Metcalf
e186536b6f test-fpucw-ieee: Don't use _FPU_IEEE if not defined
Not all architectures define this value, and if they don't,
just let the test run the same as test-fpucw, with __fpu_control
set to _FPU_DEFAULT explicitly.
2013-11-18 18:19:02 -05:00
Joseph Myers
ce66581742 Test signs of NaNs in libm-test.inc where appropriate. 2013-11-16 12:48:35 +00:00
Joseph Myers
ee1466a953 Add libm-test support for ignored return value, add more lrint / llrint / lround / llround tests. 2013-11-16 12:47:38 +00:00
Joseph Myers
14407b7e60 Replace libm-test.inc TEST_INLINE conditionals with NO_TEST_INLINE flag. 2013-11-16 12:46:52 +00:00
Joseph Myers
ca07f1973b Make libm-test.inc check for "inexact" exceptions for NaN argument. 2013-11-16 12:46:03 +00:00
Alan Modra
650ef4bd79 PowerPC floating point little-endian [4 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00084.html

Another batch of ieee854 macros and union replacement.  These four
files also have bugs fixed with this patch.  The fact that the two
doubles in an IBM long double may have different signs means that
negation and absolute value operations can't just twiddle one sign bit
as you can with ieee864 style extended double.  fmodl, remainderl,
erfl and erfcl all had errors of this type.  erfl also returned +1 for
large magnitude negative input where it should return -1.  The hypotl
error is innocuous since the value adjusted twice is only used as a
flag.  The e_hypotl.c tests for large "a" and small "b" are mutually
exclusive because we've already exited when x/y > 2**120.  That allows
some further small simplifications.

	[BZ #15734], [BZ #15735]
	* sysdeps/ieee754/ldbl-128ibm/e_fmodl.c (__ieee754_fmodl): Rewrite
	all uses of ieee875 long double macros and unions.  Simplify test
	for 0.0L.  Correct |x|<|y| and |x|=|y| test.  Use
	ldbl_extract_mantissa value for ix,iy exponents.  Properly
	normalize after ldbl_extract_mantissa, and don't add hidden bit
	already handled.  Don't treat low word of ieee854 mantissa like
	low word of IBM long double and mask off bit when testing for
	zero.
	* sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl): Rewrite
	all uses of ieee875 long double macros and unions.  Simplify tests
	for 0.0L and inf.  Correct double adjustment of k.  Delete dead code
	adjusting ha,hb.  Simplify code setting kld.  Delete two600 and
	two1022, instead use their values.  Recognise that tests for large
	"a" and small "b" are mutually exclusive.  Rename vars.  Comment.
	* sysdeps/ieee754/ldbl-128ibm/e_remainderl.c (__ieee754_remainderl):
	Rewrite all uses of ieee875 long double macros and unions.  Simplify
	test for 0.0L and nan.  Correct negation.
	* sysdeps/ieee754/ldbl-128ibm/s_erfl.c (__erfl): Rewrite all uses of
	ieee875 long double macros and unions.  Correct output for large
	magnitude x.  Correct absolute value calculation.
	(__erfcl): Likewise.
	* math/libm-test.inc: Add tests for errors discovered in IBM long
	double versions of fmodl, remainderl, erfl and erfcl.
2013-10-04 10:32:48 +09:30
Alan Modra
1b6adf888d PowerPC floating point little-endian [1 of 15]
http://sourceware.org/ml/libc-alpha/2013-08/msg00081.html

This is the first of a series of patches to ban ieee854_long_double
and the ieee854_long_double macros when using IBM long double.  union
ieee854_long_double just isn't correct for IBM long double, especially
when little-endian, and pretending it is OK has allowed a number of
bugs to remain undetected in sysdeps/ieee754/ldbl-128ibm/.

This changes the few places in generic code that use it.

	* stdio-common/printf_size.c (__printf_size): Don't use
	union ieee854_long_double in fpnum union.
	* stdio-common/printf_fphex.c (__printf_fphex): Likewise.  Use
	signbit macro to retrieve sign from long double.
	* stdio-common/printf_fp.c (___printf_fp): Use signbit macro to
	retrieve sign from long double.
	* sysdeps/ieee754/ldbl-128ibm/printf_fphex.c: Adjust for fpnum change.
	* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
	* sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise.
	* sysdeps/x86_64/fpu/printf_fphex.c: Likewise.
	* math/test-misc.c (main): Don't use union ieee854_long_double.
ports/
	* sysdeps/ia64/fpu/printf_fphex.c: Adjust for fpnum change.
2013-10-04 10:31:41 +09:30
Siddhesh Poyarekar
cfa3c8865f New test cases for sin and cos for multiple precision fallback 2013-09-19 16:54:24 +05:30
Maciej W. Rozycki
95e7cf295e Fix static-binary lazy FPU context allocation
Long ago static startup did not parse the auxiliary vector and therefore
could not get at any `AT_FPUCW' tag to check whether upon FPU context
allocation the kernel would use a FPU control word setting different to
that provided by the `__fpu_control' variable.  Static startup therefore
always initialized the FPU control word, forcing immediate FPU context
allocation even for binaries that otherwise never used the FPU.

As from GIT commit f8f900ecb9 static
startup supports parsing the auxiliary vector, so now it can avoid
explicit initialization of the FPU control word, just as can dynamic
startup, in the usual case where the setting written to the FPU control
word would be the same as the kernel uses.  This defers FPU context
allocation until the binary itself actually pokes at the FPU.

Note that the `AT_FPUCW' tag is usually absent from the auxiliary vector
in which case _FPU_DEFAULT is assumed to be the kernel default.
2013-09-09 22:36:57 +01:00
Joseph Myers
ffa3cd7f1a Fix lgammaf spurious underflow (bug 15427). 2013-09-03 15:32:54 +00:00
Joseph Myers
b7835e3223 Fix spurious jnf underflows (bug 14155). 2013-09-02 14:51:24 +00:00
Thomas Schwinge
f1cc4c8654 math: Additional type conversion tests
These have helped me find and fix type conversion issues in QEMU's MIPS
hardware emulation.  While certainly glibc is not the best place for such
tests, they're just an enhancement of tests already present.
2013-08-29 12:21:07 +02:00
Joseph Myers
8fe89494e6 Fix cexp (NaN + i0) (bug 15532). 2013-08-23 19:45:38 +00:00
Joseph Myers
acd06bb11f Fix fdim handling of infinities (bug 15797). 2013-08-21 19:56:48 +00:00
Joseph Myers
c980f2f4fe Fix cproj handling of (finite, NaN) arguments (bug 15531). 2013-08-20 19:41:15 +00:00
Andreas Schwab
ca0a6bc4c5 Fix cbrtl for ldbl-96 2013-08-13 09:45:02 +02:00
David S. Miller
f959cfd790 Annotate more cases of math bug 15319.
* math/libm-test.inc (casin_test_data): Annotate more cases of missing
	underflows from atanl/atan2l due to bug 15319.
	(casinh_test_data): Likewise.
2013-07-13 16:57:05 -07:00
Joseph Myers
b8c792af85 Allow fesetround failures in math/test-misc.c if ROUNDING_TESTS fails. 2013-06-20 19:11:34 +00:00