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| author | Joseph Myers <joseph@codesourcery.com> | 2015-02-26 17:18:54 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-02-26 17:18:54 +0000 |
| commit | ec0ce0d3be4ae21add09139c705852ed8bb114c7 (patch) | |
| tree | 5f1fdab17731cca01fd46bcb264a6805a0e9d3fc /sysdeps/x86_64/fpu | |
| parent | 380bd0fd2418f8988217de950f8b8ff18af0cb2b (diff) | |
| download | glibc-ec0ce0d3be4ae21add09139c705852ed8bb114c7.tar.gz glibc-ec0ce0d3be4ae21add09139c705852ed8bb114c7.tar.xz glibc-ec0ce0d3be4ae21add09139c705852ed8bb114c7.zip | |
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 'sysdeps/x86_64/fpu')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/e_asin.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/e_asin.c b/sysdeps/x86_64/fpu/multiarch/e_asin.c index e742a9c133..55865c02f3 100644 --- a/sysdeps/x86_64/fpu/multiarch/e_asin.c +++ b/sysdeps/x86_64/fpu/multiarch/e_asin.c @@ -1,5 +1,6 @@ #ifdef HAVE_FMA4_SUPPORT # include <init-arch.h> +# include <math.h> # include <math_private.h> extern double __ieee754_acos_sse2 (double); |