glibc/sysdeps/ieee754
Siddhesh Poyarekar cbf88869ed Fix cos computation for multiple precision fallback (bz #20357)
During the sincos consolidation I made two mistakes, one was a logical
error due to which cos(0x1.8475e5afd4481p+0) returned
sin(0x1.8475e5afd4481p+0) instead.

The second issue was an error in negating inputs for the correct
quadrants for sine.  I could not find a suitable test case for this
despite running a program to search for such an input for a couple of
hours.

Following patch fixes both issues.  Tested on x86_64.  Thanks to Matt
Clay for identifying the issue.

	[BZ #20357]
	* sysdeps/ieee754/dbl-64/s_sin.c (sloww): Fix up condition
	to call __mpsin/__mpcos and to negate values.
	* math/auto-libm-test-in: Add test.
	* math/auto-libm-test-out: Regenerate.
2016-07-18 22:33:09 +05:30
..
bits
dbl-64 Fix cos computation for multiple precision fallback (bz #20357) 2016-07-18 22:33:09 +05:30
flt-32 Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
ldbl-64-128
ldbl-96 Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
ldbl-128 Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
ldbl-128ibm Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
ldbl-opt Add nextup and nextdown math functions 2016-06-16 21:37:45 +05:30
ieee754.h
k_standard.c
k_standardf.c
k_standardl.c
Makefile
s_lib_version.c
s_matherr.c
s_signgam.c