glibc/sysdeps/ieee754
Joseph Myers cf36e5034f Fix powf (close to -1, large) (bug 18647).
The flt-32 implementation of powf wrongly uses x-1 instead of |x|-1
when computing log (x) for the case where |x| is close to 1 and y is
large.  This patch fixes the logic accordingly.  Relevant tests
existed for x close to 1, and corresponding tests are added for x
close to -1, as well as for some new variant cases.

Tested for x86_64 and x86.

	[BZ #18647]
	* sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): For large y
	and |x| close to 1, use absolute value of x when computing log.
	* math/auto-libm-test-in: Add more tests of pow.
	* math/auto-libm-test-out: Regenerated.
2015-08-05 15:01:58 +00:00
..
bits Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
dbl-64 Improve tgamma accuracy (bug 18613). 2015-06-29 23:29:35 +00:00
flt-32 Fix powf (close to -1, large) (bug 18647). 2015-08-05 15:01:58 +00:00
ldbl-64-128 Set errno for log1p on pole/domain error. 2015-04-13 21:19:27 +02:00
ldbl-96 Improve tgamma accuracy (bug 18613). 2015-06-29 23:29:35 +00:00
ldbl-128 Fix ldbl-128 expm1l (-min_subnorm) result sign (bug 18619). 2015-07-01 22:27:49 +00:00
ldbl-128ibm Improve tgamma accuracy (bug 18613). 2015-06-29 23:29:35 +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