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
..
e_acoshl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_acosl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_asinl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
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	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_exp10l.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
e_expl.c	Fix typos.	2013-08-30 18:08:59 +02:00
e_fmodl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_gammal_r.c	Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426).	2013-05-08 11:58:18 +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	Fix Bessel function spurious overflows for ldbl-128 / ldbl-128ibm (bug 15285).	2013-03-21 13:57:21 +00:00
e_jnl.c	Fix Bessel function error handling (bug 6807, bug 15901).	2013-12-04 14:39:37 +00:00
e_lgammal_r.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_log2l.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_log10l.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
e_logl.c	Fix ldbl-128 logl for subnormals (bug 16338).	2013-12-18 11:38:27 +00:00
e_powl.c	Fix BZ #14811 for ldbl-128 too.	2012-11-16 21:39:54 -08:00
e_rem_pio2l.c	Remove trailing whitespace.	2013-06-05 20:44:03 +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	Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426).	2013-05-08 11:58:18 +00:00
ieee754.h	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
k_cosl.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
k_sincosl.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
k_sinl.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
k_tanl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
ldbl2mpn.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
Makefile
math_ldbl.h
mpn2ldbl.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
printf_fphex.c	PowerPC floating point little-endian [1 of 15]	2013-10-04 10:31:41 +09:30
s_asinhl.c	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
s_atanl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +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 erfc errno setting on underflow (bug 6786).	2013-12-03 16:25:18 +00:00
s_expm1l.c	Remove trailing whitespace.	2013-06-05 20:44:03 +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 notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
s_fmal.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
s_fpclassifyl.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
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	New <math.h> macro named issignaling to check for a signaling NaN (sNaN).	2013-04-02 13:51:02 +02:00
s_llrintl.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
s_llroundl.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
s_log1pl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
s_logbl.c	Optimize handling of denormals in logb/logbf/logbl	2012-05-26 13:53:22 +02:00
s_lrintl.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
s_lroundl.c	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
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	Use <> for math.h and math_private.h everywhere.	2012-03-09 16:09:10 -08:00
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	Remove trailing whitespace.	2013-06-05 20:44:03 +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 notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
s_scalblnl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
s_scalbnl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
s_signbitl.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
s_sincosl.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +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	Fix leading whitespaces.	2013-06-06 20:36:07 +02:00
strtold_l.c	[BZ #15522] strtod ("nan(N)") returning a sNaN in some cases	2013-08-29 12:22:10 +02:00
t_expl.h	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00
t_sincosl.c	Remove trailing whitespace.	2013-06-05 20:44:03 +00:00
w_expl.c	Avoid overflows from long double functions using __kernel_standard.	2012-03-28 09:32:12 +00:00
x2y2m1l.c	Update copyright notices with scripts/update-copyrights.	2013-01-02 19:05:09 +00:00