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authorJoseph Myers <joseph@codesourcery.com>2015-02-26 17:18:54 +0000
committerJoseph Myers <joseph@codesourcery.com>2015-02-26 17:18:54 +0000
commitec0ce0d3be4ae21add09139c705852ed8bb114c7 (patch)
tree5f1fdab17731cca01fd46bcb264a6805a0e9d3fc /NEWS
parent380bd0fd2418f8988217de950f8b8ff18af0cb2b (diff)
downloadglibc-ec0ce0d3be4ae21add09139c705852ed8bb114c7.tar.gz
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Fix asin missing underflows (bug 16351).
Similar to various other bugs in this area, some asin implementations
do not raise the underflow exception for subnormal arguments, when the
result is tiny and inexact.  This patch forces the exception in a
similar way to previous fixes.

Tested for x86_64, x86, powerpc and mips64.

	[BZ #16351]
	* sysdeps/i386/fpu/e_asin.S (dbl_min): New object.
	(MO): New macro.
	(__ieee754_asin): Force underflow exception for results with small
	absolute value.
	* sysdeps/i386/fpu/e_asinf.S (flt_min): New object.
	(MO): New macro.
	(__ieee754_asinf): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/dbl-64/e_asin.c: Include <float.h> and <math.h>.
	(__ieee754_asin): Force underflow exception for results with small
	absolute value.
	* sysdeps/ieee754/flt-32/e_asinf.c: Include <float.h>.
	(__ieee754_asinf): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/ldbl-128/e_asinl.c: Include <float.h>.
	(__ieee754_asinl): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/ldbl-128ibm/e_asinl.c: Include <float.h>.
	(__ieee754_asinl): Force underflow exception for results with
	small absolute value.
	* sysdeps/ieee754/ldbl-96/e_asinl.c: Include <float.h>.
	(__ieee754_asinl): Force underflow exception for results with
	small absolute value.
	* sysdeps/x86_64/fpu/multiarch/e_asin.c [HAVE_FMA4_SUPPORT]:
	Include <math.h>.
	* math/auto-libm-test-in: Do not mark underflow exceptions as
	possibly missing for bug 16351.
	* math/auto-libm-test-out: Regenerated.
Diffstat (limited to 'NEWS')
-rw-r--r--NEWS8
1 files changed, 4 insertions, 4 deletions
diff --git a/NEWS b/NEWS
index f09ffb1ccd..40959d3530 100644
--- a/NEWS
+++ b/NEWS
@@ -9,10 +9,10 @@ Version 2.22
 
 * The following bugs are resolved with this release:
 
-  4719, 14841, 13064, 14094, 15319, 15467, 15790, 15969, 16560, 16783,
-  17269, 17523, 17569, 17588, 17792, 17836, 17912, 17916, 17932, 17944,
-  17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998,
-  17999, 18019, 18020, 18029, 18030, 18032.
+  4719, 14841, 13064, 14094, 15319, 15467, 15790, 15969, 16351, 16560,
+  16783, 17269, 17523, 17569, 17588, 17792, 17836, 17912, 17916, 17932,
+  17944, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996,
+  17998, 17999, 18019, 18020, 18029, 18030, 18032.
 
 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
   new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red