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| author | Rich Felker <dalias@aerifal.cx> | 2012-11-15 08:37:58 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2012-11-15 08:37:58 -0500 |
| commit | 8bb181622222f2ee3462c8b021bcae4fcdbbd37a (patch) | |
| tree | 166a1be834c8cd5a4c2521d41d7ee506bd8c8e51 /src/math/ilogbf.c | |
| parent | update copyright file for recent contributions (diff) | |
| parent | fenv: return FE_TONEAREST in dummy fegetround (diff) | |
| download | grovel-8bb181622222f2ee3462c8b021bcae4fcdbbd37a.tar.gz grovel-8bb181622222f2ee3462c8b021bcae4fcdbbd37a.tar.xz | |
Merge remote-tracking branch 'nsz/math'
Diffstat (limited to 'src/math/ilogbf.c')
| -rw-r--r-- | src/math/ilogbf.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/math/ilogbf.c b/src/math/ilogbf.c index 272cbdac..42cd62e2 100644 --- a/src/math/ilogbf.c +++ b/src/math/ilogbf.c @@ -8,13 +8,17 @@ int ilogbf(float x) if (!e) { u.bits <<= 9; - if (u.bits == 0) + if (u.bits == 0) { + FORCE_EVAL(0/0.0f); return FP_ILOGB0; + } /* subnormal x */ for (e = -0x7f; u.bits < (uint32_t)1<<31; e--, u.bits<<=1); return e; } - if (e == 0xff) + if (e == 0xff) { + FORCE_EVAL(0/0.0f); return u.bits<<9 ? FP_ILOGBNAN : INT_MAX; + } return e - 0x7f; } |