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| author | Joseph Myers <joseph@codesourcery.com> | 2015-06-18 23:27:41 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-06-18 23:27:41 +0000 |
| commit | 8db3cdefefe39e9d42b05b1610a63190e9f7fba4 (patch) | |
| tree | b4ae0196406ac58ad51d28aacc95b074341c179c /sysdeps/i386/fpu/s_asinhf.S | |
| parent | a7a3c24632904b5b1d7e47eaf6b955bba6246b8f (diff) | |
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Fix asinh missing underflows (bug 16350).
Similar to various other bugs in this area, some asinh 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 and mips64.
[BZ #16350]
* sysdeps/i386/fpu/s_asinh.S (__asinh): Force underflow exception
for arguments with small absolute value.
* sysdeps/i386/fpu/s_asinhf.S (__asinhf): Likewise.
* sysdeps/i386/fpu/s_asinhl.S (__asinhl): Likewise.
* sysdeps/ieee754/dbl-64/s_asinh.c: Include <float.h>.
(__asinh): Force underflow exception for arguments with small
absolute value.
* sysdeps/ieee754/flt-32/s_asinhf.c: Include <float.h>.
(__asinhf): Force underflow exception for arguments with small
absolute value.
* sysdeps/ieee754/ldbl-128/s_asinhl.c: Include <float.h>.
(__asinhl): Force underflow exception for arguments with small
absolute value.
* sysdeps/ieee754/ldbl-128ibm/s_asinhl.c: Include <float.h>.
(__asinhl): Force underflow exception for arguments with small
absolute value.
* sysdeps/ieee754/ldbl-96/s_asinhl.c: Include <float.h>.
(__asinhl): Force underflow exception for arguments with small
absolute value.
* math/auto-libm-test-in: Do not mark underflow exceptions as
possibly missing for bug 16350.
* math/auto-libm-test-out: Regenerated.
Diffstat (limited to 'sysdeps/i386/fpu/s_asinhf.S')
| -rw-r--r-- | sysdeps/i386/fpu/s_asinhf.S | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/s_asinhf.S b/sysdeps/i386/fpu/s_asinhf.S index b1a28e7ac1..77ebae46ec 100644 --- a/sysdeps/i386/fpu/s_asinhf.S +++ b/sysdeps/i386/fpu/s_asinhf.S @@ -100,7 +100,16 @@ ENTRY(__asinhf) 4: fld %st // x : x faddl MO(huge) // huge+x : x fstp %st(0) // x - ret + cmpl $0x00800000, %eax + jae 8f + subl $4, %esp + cfi_adjust_cfa_offset (4) + fld %st(0) + fmul %st(0) + fstps (%esp) + addl $4, %esp + cfi_adjust_cfa_offset (-4) +8: ret // |x| > 2^14 => y = sign(x) * (log(|x|) + log(2)) .align ALIGNARG(4) |