modular_recurrence()

MAYAFLUX_API double MayaFlux::Kinesis::Discrete::modular_recurrence ( std::span< const double >  window, std::span< const double >  coefs  )

noexcept

Weighted sum wrapped into [0, modulus).

coefs: [modulus, weights...]. In a recursive Polynomial the weights act on the last outputs, which is a lagged-Fibonacci style recurrence with the structure the weights and modulus give it. A modulus of zero or less leaves the sum unwrapped.

Definition at line 474 of file Kernels.cpp.

{
    if (coefs.empty())
        return 0.0;
 
    const double sum = weighted_sum(window, coefs.subspan(1));
    const double modulus = coefs.front();
    if (modulus <= 0.0)
        return sum;
    return wrap(sum, 0.0, modulus);
}

References sum(), weighted_sum(), window, and MayaFlux::Kinesis::wrap().

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