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| author | Joseph Myers <joseph@codesourcery.com> | 2015-08-05 15:01:58 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-08-05 15:01:58 +0000 |
| commit | cf36e5034fa8ed5d44036bce09a55a7f00d19252 (patch) | |
| tree | 9fca061d81056a70793ebee9bf828b4e5b97f724 /NEWS | |
| parent | 2aa6c8af26e65695e9daf382a6e508574a30cdf2 (diff) | |
| download | glibc-cf36e5034fa8ed5d44036bce09a55a7f00d19252.tar.gz glibc-cf36e5034fa8ed5d44036bce09a55a7f00d19252.tar.xz glibc-cf36e5034fa8ed5d44036bce09a55a7f00d19252.zip | |
Fix powf (close to -1, large) (bug 18647).
The flt-32 implementation of powf wrongly uses x-1 instead of |x|-1 when computing log (x) for the case where |x| is close to 1 and y is large. This patch fixes the logic accordingly. Relevant tests existed for x close to 1, and corresponding tests are added for x close to -1, as well as for some new variant cases. Tested for x86_64 and x86. [BZ #18647] * sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): For large y and |x| close to 1, use absolute value of x when computing log. * math/auto-libm-test-in: Add more tests of pow. * math/auto-libm-test-out: Regenerated.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/NEWS b/NEWS index 6e0726c418..0eef93906a 100644 --- a/NEWS +++ b/NEWS @@ -8,7 +8,7 @@ using `glibc' in the "product" field. Version 2.23 * The following bugs are resolved with this release: - 18265, 18525. + 18265, 18525, 18647. Version 2.22 |