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fix overflow

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This commit is contained in:
fengyuentau 2023-06-23 17:10:29 +08:00
parent 4792837f2e
commit 29388f80a5
1 changed files with 8 additions and 1 deletions
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9
modules/dnn/src/layers/elementwise_layers.cpp
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@ -680,7 +680,14 @@ struct SigmoidFunctor : public BaseDefaultFunctor<SigmoidFunctor>
inline float calculate(float x) const inline float calculate(float x) const
{ {
return 1.f / (1.f + exp(-x)); float y;
if (x >= 0)
y = 1.f / (1.f + exp(-x));
else {
y = exp(x);
y = y / (1 + y);
}
return y;
} }
#ifdef HAVE_HALIDE #ifdef HAVE_HALIDE