Jens W. Schindel tschnz
tschnz
/ 1d_gauss.h
Created
December 14, 2022 17:39
Create centered & normalized 1D gaussian kernel aka normal distribution function aka probability density function
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| template <typename T> | |
| T norm_pdf(T x, T mu, T sigma) | |
| { | |
| static const T inv_sqrt_2pi = static_cast<T>(0.3989422804014327); // Precomputed 1/sqrt(2*PI) to avoid sqrt() | |
| T a = (x - mu) / sigma; | |
| return inv_sqrt_2pi / sigma * std::exp(-T(0.5) * a * a); | |
| } | |
| template <typename T> |