Flatten.cpp File Reference

This is an emulation, in spirit at least, of the effect of of the Fortran flat4() subroutine. While our implementation differs from that of the original, the results should be as good or better. More...

#include "Flatten.h"
#include <algorithm>
#include <array>
#include <cmath>
#include <memory>
#include <numbers>
#include <utility>
#include <vector>
#include <vendor/Eigen/Dense>

Include dependency graph for Flatten.cpp:

Classes
class	Flatten::Impl

Detailed Description

This is an emulation, in spirit at least, of the effect of of the Fortran flat4() subroutine. While our implementation differs from that of the original, the results should be as good or better.

One key difference other than what's obvious below is that this isn't responsible for converting a power-scaled spectrum to dB. If you need to do that before sending data here, that's on you; std::transform and std::log10 are going to be your friends. We do flattening, and only flattening.

Note that this is a functor; it's serially reusable, but it's not reentrant. Call it from one thread only. In practical use, that's not expected to be a problem, and it allows us to reuse allocated memory in a serial manner, rather than requesting it and freeing it constantly.