Joseph Myers 7ee06ef158 Fix ldbl-128ibm tanhl inaccuracy (bug 18790). ...

ldbl-128ibm tanhl uses a too-small threshold to decide when to return
+/-1, resulting in large errors.  This patch changes it to a more
appropriate threshold (the requirement is for 2*exp(-2|x|) to be small
in terms of ulps of 1).

Tested for x86_64, x86 and powerpc.

	[BZ #18790]
	* sysdeps/ieee754/ldbl-128ibm/s_tanhl.c (__tanhl): Increase
	threshold for returning +/- 1.
	* math/auto-libm-test-in: Add more tests of tanh.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.

2015-08-10 20:35:30 +00:00

..

bits

Update copyright dates with scripts/update-copyrights.

2015-01-02 16:29:47 +00:00

dbl-64

Fix tan missing underflows (bug 16517).

2015-08-07 23:10:35 +00:00

flt-32

Fix tan missing underflows (bug 16517).

2015-08-07 23:10:35 +00:00

ldbl-64-128

Set errno for log1p on pole/domain error.

2015-04-13 21:19:27 +02:00

ldbl-96

Fix tan missing underflows (bug 16517).

2015-08-07 23:10:35 +00:00

ldbl-128

Fix tan missing underflows (bug 16517).

2015-08-07 23:10:35 +00:00

ldbl-128ibm

Fix ldbl-128ibm tanhl inaccuracy (bug 18790).

2015-08-10 20:35:30 +00:00

ldbl-opt

Fixed powerpc64 build.

2015-06-19 20:42:34 +03:00

ieee754.h

Update copyright dates with scripts/update-copyrights.

2015-01-02 16:29:47 +00:00

k_standard.c

Add comment to CSTR macro in k_standard.c.

2015-02-27 01:12:19 +00:00

k_standardf.c

Update copyright dates with scripts/update-copyrights.

2015-01-02 16:29:47 +00:00

k_standardl.c

Fix spurious "inexact" exceptions from __kernel_standard_l (bug 18245, bug 18583).

2015-06-23 17:26:46 +00:00

Makefile

Avoid -Wno-write-strings for k_standard.c.

2015-02-26 22:50:54 +00:00

s_lib_version.c

Remove trailing whitespace.

2013-06-05 20:44:03 +00:00

s_matherr.c

Use <> for math.h and math_private.h everywhere.

2012-03-09 16:09:10 -08:00

s_signgam.c

Use <> for math.h and math_private.h everywhere.

2012-03-09 16:09:10 -08:00