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| author | Joseph Myers <joseph@codesourcery.com> | 2016-06-08 22:24:06 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2016-06-08 22:24:06 +0000 |
| commit | df179d88080ad7a733edccc655cf5f6bbec6f8fc (patch) | |
| tree | d1f7b50279ad7221529019078ad2a170fcea5aaf /sysdeps/x86_64/fpu/e_logl.S | |
| parent | 9bd3ef8e19b19fb3cfcf99a33a1493035891b990 (diff) | |
| download | glibc-df179d88080ad7a733edccc655cf5f6bbec6f8fc.tar glibc-df179d88080ad7a733edccc655cf5f6bbec6f8fc.tar.gz glibc-df179d88080ad7a733edccc655cf5f6bbec6f8fc.tar.bz2 glibc-df179d88080ad7a733edccc655cf5f6bbec6f8fc.zip | |
Fix i386/x86_64 logl (sNaN) (bug 20227).
The i386/x86_64 versions of logl return sNaN for sNaN input. This
patch fixes them to add a NaN input to itself so that qNaN is returned
in this case.
Tested for x86_64 and x86 (including a build for i586 to cover the
non-i686 logl version).
[BZ #20227]
* sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Add NaN input to
itself.
* sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise.
* sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise.
* math/libm-test.inc (log_test_data): Add sNaN tests.
Diffstat (limited to 'sysdeps/x86_64/fpu/e_logl.S')
| -rw-r--r-- | sysdeps/x86_64/fpu/e_logl.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/e_logl.S b/sysdeps/x86_64/fpu/e_logl.S index dbe6fd59dc..0d3576f48b 100644 --- a/sysdeps/x86_64/fpu/e_logl.S +++ b/sysdeps/x86_64/fpu/e_logl.S @@ -66,6 +66,7 @@ ENTRY(__ieee754_logl) jnz 4b // in case x is +-Inf fstp %st(1) fstp %st(1) + fadd %st(0) ret END (__ieee754_logl) |