Joseph Myers 1d9ab20c14 Fix ldbl-128/ldbl-128ibm acosl inaccuracy (bug 18038, bug 18039). ... The ldbl-128 and ldbl-128ibm implementations of acosl have similar bugs, using a threshold of 0x1p-57L to determine when they just return pi/2. Since the result pi/2 - asinl (x) is roughly pi/2 - x for small x, the relevant cut-off is actually x being < 0.5ulp of 1. This patch fixes the implementations to use that cut-off and adds tests of small acos arguments. Tested for powerpc and mips64. Also tested for x86_64 and x86; no ulps updates needed. [BZ #18038] [BZ #18039] * sysdeps/ieee754/ldbl-128/e_acosl.c (__ieee754_acosl): Only return pi/2 for arguments below 0x1p-113L. * sysdeps/ieee754/ldbl-128ibm/e_acosl.c (__ieee754_acosl): Only return pi/2 for arguments below 0x1p-106L. * math/auto-libm-test-in: Add more tests of acos. * math/auto-libm-test-out: Regenerated.		2015-02-26 21:06:34 +00:00
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e_acoshl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_acosl.c	Fix ldbl-128/ldbl-128ibm acosl inaccuracy (bug 18038, bug 18039).	2015-02-26 21:06:34 +00:00
e_asinl.c	Fix asin missing underflows (bug 16351).	2015-02-26 17:18:54 +00:00
e_atan2l.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_atanhl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_coshl.c	Fix cosh spurious underflows from expm1 (bug 16354), inaccurate results near 0 (bug 17061).	2014-06-23 20:20:10 +00:00
e_exp10l.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
e_expl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
e_fmodl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_gammal_r.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
e_hypotl.c	Fix hypot handling of subnormals (bug 16316, bug 16330).	2013-12-17 13:42:13 +00:00
e_ilogbl.c	Finish ilogb changes	2012-04-18 14:31:43 +02:00
e_j0l.c	Fix Bessel function spurious overflows for ldbl-128 / ldbl-128ibm (bug 15285).	2013-03-21 13:57:21 +00:00
e_j1l.c	Set errno for y1 overflow (bug 17050).	2014-06-23 20:17:13 +00:00
e_jnl.c	Fix yn overflow handling in non-default rounding modes (bug 16561, bug 16562).	2014-06-27 14:52:13 +00:00
e_lgammal_r.c	powerpc: Fix lgammal_r overflow warnings	2014-12-11 07:17:11 -05:00
e_log2l.c	Fix log2 (1) in round-downward mode (bug 17042).	2014-06-10 12:07:15 +00:00
e_log10l.c	Fix log10 (1) in round-downward mode (bug 16977).	2014-05-23 12:07:50 +00:00
e_logl.c	Fix log (1) in round-downward mode (bug 16731).	2014-03-21 18:13:58 +00:00
e_powl.c	Fix ldbl-128 powl sign of result in overflow / underflow cases (bug 17097).	2014-06-29 11:49:08 +00:00
e_rem_pio2l.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
e_remainderl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_sinhl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
gamma_productl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
ieee754.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
k_cosl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
k_sincosl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
k_sinl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
k_tanl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
ldbl2mpn.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
Makefile	* sysdeps/ieee754/ldbl-128/Makefile: New file.	2007-03-14 17:36:18 +00:00
math_ldbl.h	Update.	1999-07-15 18:26:25 +00:00
mpn2ldbl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
printf_fphex.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_asinhl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_atanl.c	Fix atan / atan2 missing underflows (bug 15319).	2015-02-18 21:10:49 +00:00
s_cbrtl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_ceill.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_copysignl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_cosl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_erfl.c	Fix ldbl-128 erfl spurious underflows (bug 16287).	2014-06-24 20:56:56 +00:00
s_expm1l.c	Fix ldbl-128 expm1l spurious underflow (bug 16539).	2014-06-30 17:38:16 +00:00
s_fabsl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_finitel.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_floorl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_fma.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_fmal.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_fpclassifyl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_frexpl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_isinf_nsl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_isinfl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_isnanl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_issignalingl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_llrintl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_llroundl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_log1pl.c	Fix log1pl (LDBL_MAX) in FE_UPWARD mode (bug 16564).	2014-05-14 12:38:56 +00:00
s_logbl.c	Optimize handling of denormals in logb/logbf/logbl	2012-05-26 13:53:22 +02:00
s_lrintl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_lroundl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_modfl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_nearbyintl.c	Fix nearbyint scheduling of arithmetic past fesetenv (bug 15490).	2013-05-19 18:40:25 +00:00
s_nextafterl.c	Fix nextafter overflow in non-default rounding modes (bug 16677).	2014-03-11 22:24:00 +00:00
s_nexttoward.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
s_nexttowardf.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
s_remquol.c	Fix sign of remquo zero remainder in round-downward mode (bug 17987).	2015-02-17 00:41:50 +00:00
s_rintl.c	Fix set-but-not-used warnings in ldbl-128 nearbyintl, rintl.	2012-11-20 14:26:07 +00:00
s_roundl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_scalblnl.c	[BZ #6803] Set errno for scalbln, scalbn	2014-06-20 07:48:20 +05:30
s_scalbnl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
s_signbitl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
s_sincosl.c	Fix sincos errno setting (bug 15467).	2015-02-11 23:17:25 +00:00
s_sinl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_tanhl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_tanl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
s_truncl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
strtold_l.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
t_expl.h	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
t_sincosl.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00
w_expl.c	[BZ #16427] Fix ldbl-128 exp overflows.	2014-01-15 09:50:31 +01:00
x2y2m1l.c	Update copyright dates with scripts/update-copyrights.	2015-01-02 16:29:47 +00:00