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avutil/softfloat: Check for MIN_EXP in av_sqrt_sf()

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Otherwise the exponent could eventually underflow

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer
2015-11-08 13:25:54 +01:00
parent 107db5abf3
commit 0269fb11e3
1 changed files with 4 additions and 0 deletions
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4
libavutil/softfloat.h
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@@ -181,6 +181,10 @@ static av_always_inline SoftFloat av_sqrt_sf(SoftFloat val)
val.mant >>= 1; val.mant >>= 1;
val.exp = (val.exp >> 1) + 1; val.exp = (val.exp >> 1) + 1;
if (val.exp < MIN_EXP) {
val.exp = MIN_EXP;
val.mant= 0;
}
} }
return val; return val;