diff options
Diffstat (limited to 'Eigen/src/Core/functors/UnaryFunctors.h')
| -rw-r--r-- | Eigen/src/Core/functors/UnaryFunctors.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Eigen/src/Core/functors/UnaryFunctors.h b/Eigen/src/Core/functors/UnaryFunctors.h index 1d5eb3678..03f167ac9 100644 --- a/Eigen/src/Core/functors/UnaryFunctors.h +++ b/Eigen/src/Core/functors/UnaryFunctors.h @@ -927,8 +927,9 @@ template <> struct scalar_logistic_op<float> { EIGEN_EMPTY_STRUCT_CTOR(scalar_logistic_op) EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE float operator()(const float& x) const { - const float one = 1.0f; - return one / (one + numext::exp(-x)); + if (x < -18.0f) return 0.0f; + else if (x > 18.0f) return 1.0f; + else return 1.0f / (1.0f + numext::exp(-x)); } template <typename Packet> EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE |