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| author | Joseph Myers <joseph@codesourcery.com> | 2015-02-26 15:13:22 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2015-02-26 15:14:58 +0000 |
| commit | 380bd0fd2418f8988217de950f8b8ff18af0cb2b (patch) | |
| tree | abb55a322fc5e1b829761d91a23510ecfc6bf1ee /NEWS | |
| parent | 4a28f4d55a6cc33474c0792fe93b5942d81bf185 (diff) | |
| download | glibc-380bd0fd2418f8988217de950f8b8ff18af0cb2b.tar.gz glibc-380bd0fd2418f8988217de950f8b8ff18af0cb2b.tar.xz glibc-380bd0fd2418f8988217de950f8b8ff18af0cb2b.zip | |
Fix ldbl-128ibm logbl near powers of 2 (bug 18030).
The ldbl-128ibm implementation of logbl produces incorrect results when the high part of the argument is a power of 2 and the low part a nonzero number with the opposite sign (and so the returned exponent should be 1 less than that of the high part). For example, logbl (0x1.ffffffffffffffp1L) returns 2 but should return 1. (This is similar to (fixed) bug 16740 for frexpl, and (fixed) bug 18029 for ilogbl.) This patch adds checks for that case. Tested for powerpc. [BZ #18030] * sysdeps/ieee754/ldbl-128ibm/s_logbl.c (__logbl): Adjust exponent of power of 2 down when low part has opposite sign. * math/libm-test.inc (logb_test_data): Add more tests.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/NEWS b/NEWS index 77e081464d..f09ffb1ccd 100644 --- a/NEWS +++ b/NEWS @@ -12,7 +12,7 @@ Version 2.22 4719, 14841, 13064, 14094, 15319, 15467, 15790, 15969, 16560, 16783, 17269, 17523, 17569, 17588, 17792, 17836, 17912, 17916, 17932, 17944, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998, - 17999, 18019, 18020, 18029, 18032. + 17999, 18019, 18020, 18029, 18030, 18032. * Character encoding and ctype tables were updated to Unicode 7.0.0, using new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red |