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| author | Joseph Myers <joseph@codesourcery.com> | 2015-11-05 21:56:31 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-11-05 21:56:31 +0000 |
| commit | 01189b083b8ce54fc568fd2ab0dd433d869ede0e (patch) | |
| tree | 15620545ab980f008bdec41540a43f1efea79ed0 /ChangeLog | |
| parent | 939fdd1c36dde8884543bc9c3b8506e76c9ff0e4 (diff) | |
| download | glibc-01189b083b8ce54fc568fd2ab0dd433d869ede0e.tar.gz glibc-01189b083b8ce54fc568fd2ab0dd433d869ede0e.tar.xz glibc-01189b083b8ce54fc568fd2ab0dd433d869ede0e.zip | |
Fix i386/x86_64 log* (1) zero sign for -ffinite-math-only (bug 19213).
For the -ffinite-math-only versions of various x86_64 and x86 log* functions, a zero result from log* (1) is returned with incorrect sign in round-downward mode. This patch fixes this in a similar way to the previous fixes for the non-*_finite versions of the functions. Tested for x86_64 and x86 (including an i586 build), together with a patch that will be applied separately to enable the main libm-test.inc tests for the finite-math-only functions. [BZ #19213] * sysdeps/i386/fpu/e_log.S (__log_finite): Ensure +0 is always returned for argument 1. * sysdeps/i386/fpu/e_logf.S (__logf_finite): Likewise. * sysdeps/i386/fpu/e_logl.S (__logl_finite): Likewise. * sysdeps/i386/i686/fpu/e_logl.S (__logl_finite): Likewise. * sysdeps/x86_64/fpu/e_log10l.S (__log10l_finite): Likewise. * sysdeps/x86_64/fpu/e_log2l.S (__log2l_finite): Likewise. * sysdeps/x86_64/fpu/e_logl.S (__logl_finite): Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 9c78a11722..95dae4bafa 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,15 @@ 2015-11-05 Joseph Myers <joseph@codesourcery.com> + [BZ #19213] + * sysdeps/i386/fpu/e_log.S (__log_finite): Ensure +0 is always + returned for argument 1. + * sysdeps/i386/fpu/e_logf.S (__logf_finite): Likewise. + * sysdeps/i386/fpu/e_logl.S (__logl_finite): Likewise. + * sysdeps/i386/i686/fpu/e_logl.S (__logl_finite): Likewise. + * sysdeps/x86_64/fpu/e_log10l.S (__log10l_finite): Likewise. + * sysdeps/x86_64/fpu/e_log2l.S (__log2l_finite): Likewise. + * sysdeps/x86_64/fpu/e_logl.S (__logl_finite): Likewise. + [BZ #19211] * math/bits/math-finite.h (lgamma): Set signgam if [__USE_MISC || __USE_XOPEN], not if [!__USE_ISOC99]. |