Template Function GridKit::Math::qramp

Function Documentation

template<class ScalarT> inline ScalarT GridKit::Math::qramp(const ScalarT x)

Smooth one-sided quadratic ramp.

Smooth approximation to max(x, 0)^2 via a sigmoid-gated quadratic. Used for IEEE-style quadratic saturation curves.

Note

Eventually a enzyme specialization for an exact implementation would be nice, since the piecewise definition is C^1 continuous