Add fast tanh and fast sigmoid to LSTM#43
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sdatkinson
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May 27, 2023
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| inline float fast_sigmoid(const float x) | ||
| { | ||
| return 0.5f * (fast_tanh(x * 0.5f) + 1.0f); |
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This PR adds fast tanh and fast sigmoid activation for LSTM models. It keys off of the enable_fast_tanh()/disable_fast_tanh() methods.
My testing indicates around a 40% performance improvement for LSTM models.