diff options
| author | Joseph Myers <joseph@codesourcery.com> | 2015-05-19 23:44:28 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-05-19 23:44:28 +0000 |
| commit | 3ce2232efb008e129908b9f35c4266991d9361de (patch) | |
| tree | a479c93a0470a331434f1c96b0f365151e7bbd95 /ChangeLog | |
| parent | 526af54142db14c1edcd2d80dc1b56d33ff4e8ce (diff) | |
| download | glibc-3ce2232efb008e129908b9f35c4266991d9361de.tar.gz glibc-3ce2232efb008e129908b9f35c4266991d9361de.tar.xz glibc-3ce2232efb008e129908b9f35c4266991d9361de.zip | |
Fix ldbl-96 remquol (finite, Inf) (bug 18244).
ldbl-96 remquol wrongly handles the case where the first argument is finite and the second infinite, because the check for the second argument being a NaN fails to disregard the explicit high mantissa bit and so wrongly interprets an infinity as being a NaN. This patch fixes this by masking off that bit, and improves test coverage for both remainder and remquo (various cases were missing tests, or, as in the case of the bug, were tested only for one of the two functions). Tested for x86_64 and x86. [BZ #18244] * sysdeps/ieee754/ldbl-96/s_remquol.c (__remquol): Ignore explicit high mantissa bit when testing whether P is a NaN. * math/libm-test.inc (remainder_test_data): Add more tests. (remquo_test_data): Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 0a5ef3b4a0..c1a73c8f9d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,11 @@ 2015-05-19 Joseph Myers <joseph@codesourcery.com> + [BZ #18244] + * sysdeps/ieee754/ldbl-96/s_remquol.c (__remquol): Ignore explicit + high mantissa bit when testing whether P is a NaN. + * math/libm-test.inc (remainder_test_data): Add more tests. + (remquo_test_data): Likewise. + [BZ #18049] * sysdeps/i386/fpu/e_atanhl.S (__ieee754_atanhl): For exponents below -32, return the argument, with underflow if subnormal. |