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| author | Andreas Schwab <schwab@linux-m68k.org> | 2012-05-25 11:57:33 +0200 |
|---|---|---|
| committer | Andreas Schwab <schwab@linux-m68k.org> | 2012-05-26 13:53:22 +0200 |
| commit | 25dbcb277a9dea5f241c0b888a30b9341310d941 (patch) | |
| tree | 74c7933f325f44fed6f2f15fd87c59fd4752be37 /sysdeps/ieee754/flt-32 | |
| parent | d81dcb356909937b0c8e9c69ff0be27f51aaa07a (diff) | |
| download | glibc-25dbcb277a9dea5f241c0b888a30b9341310d941.tar.gz glibc-25dbcb277a9dea5f241c0b888a30b9341310d941.tar.xz glibc-25dbcb277a9dea5f241c0b888a30b9341310d941.zip | |
Optimize handling of denormals in logb/logbf/logbl
Diffstat (limited to 'sysdeps/ieee754/flt-32')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_logbf.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sysdeps/ieee754/flt-32/s_logbf.c b/sysdeps/ieee754/flt-32/s_logbf.c index 025c70de7e..e2b3aaa626 100644 --- a/sysdeps/ieee754/flt-32/s_logbf.c +++ b/sysdeps/ieee754/flt-32/s_logbf.c @@ -31,8 +31,7 @@ __logbf (float x) { /* POSIX specifies that denormal number is treated as though it were normalized. */ - int m = (ix == 0) ? 0 : __builtin_clz (ix); - return -126.0 + (float)(8 - m); + rix -= __builtin_clz (ix) - 9; } return (float) (rix - 127); } |