| commit | c064f6a613844181f411aabb2662384a6aefb69e | |
| author | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | |
| Fri, 28 Apr 2017 22:45:52 +0000 (28 19:45 -0300) | ||
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | |
| Fri, 28 Apr 2017 22:45:52 +0000 (28 19:45 -0300) | ||
| tree | 87eddafe48fccaed565604fd1f405ad0437858f5 | treesnapshot (tar.gz zip) |
| parent | 2f7f3cd8cd302bb10908c86f3f7b349df0a78e6a | commitdiff |
powerpc: Fix logbl on power7 [BZ# 21280]
1. Fix the results for negative subnormals by ignoring the signal when
normalizing the value.
2. Fix the output when the high part is a power of 2 and the low part
is a nonzero number with opposite sign. This fix is based on commit
380bd0fd2418f8988217de950f8b8ff18af0cb2b.
After applying this patch, logbl() tests pass cleanly on POWER >= 7.
Tested on powerpc, powerpc64 and powerpc64le
[BZ #21280]
* sysdeps/powerpc/power7/fpu/s_logbl.c (__logbl): Ignore the
signal of subnormals and adjust the exponent of power of 2 down
when low part has opposite sign.
1. Fix the results for negative subnormals by ignoring the signal when
normalizing the value.
2. Fix the output when the high part is a power of 2 and the low part
is a nonzero number with opposite sign. This fix is based on commit
380bd0fd2418f8988217de950f8b8ff18af0cb2b.
After applying this patch, logbl() tests pass cleanly on POWER >= 7.
Tested on powerpc, powerpc64 and powerpc64le
[BZ #21280]
* sysdeps/powerpc/power7/fpu/s_logbl.c (__logbl): Ignore the
signal of subnormals and adjust the exponent of power of 2 down
when low part has opposite sign.
| ChangeLog | diffblobblamehistory | |
| sysdeps/powerpc/power7/fpu/s_logbl.c | diffblobblamehistory |