logarithmic()

void MayaFlux::Kinesis::Discrete::logarithmic ( std::span< double >  data, double  a, double  b, double  c, double  base = std::numbers::e  )

noexcept

Logarithmic map y = a * log_base(b*x + c) applied in-place Values where (b*x + c) <= 0 are mapped to 0.

Scalar transcendental — not SIMD hot-path.

Parameters

data	Target span
a	Scale factor
b	Input scale
c	Input offset
base	Logarithm base (default: e)

Definition at line 34 of file Transform.cpp.

{
    const double log_factor = (base == std::numbers::e) ? 1.0 : (1.0 / std::log(base));
    std::ranges::transform(data, data.begin(),
        [a, b, c, log_factor](double x) {
            const double arg = b * x + c;
            return (arg > 0.0) ? a * std::log(arg) * log_factor : 0.0;
        });
}

References a, and b.