chirpz.h

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/******************************************************************************
 * Copyright 2014 Micah C Chambers (micahc.vt@gmail.com)
 *
 * NPL is free software: you can redistribute it and/or modify it under the
 * terms of the BSD 2-Clause License available in LICENSE or at
 * http://opensource.org/licenses/BSD-2-Clause
 *
 * @file chirpz.cpp Functions for performing the chirpz transform
 *
 *****************************************************************************/

#ifndef CHIRPZ_H
#define CHIRPZ_H

#include <cstddef>
#include <cstdlib>
#include <string>
#include <vector>
#include <complex>

#include "fftw3.h"

namespace npl {

void createChirp(int64_t sz, fftw_complex* chirp, int64_t origsz,
        double upratio, double alpha, bool center, bool fft);

void chirpzFFT(size_t isize, size_t usize, fftw_complex* inout,
        size_t uppadsize, fftw_complex* buffer, fftw_complex* prechirp,
        fftw_complex* convchirp, fftw_complex* postchirp, bool debug = false);


void chirpzFFT(size_t isize, size_t usize, fftw_complex* inout,
        fftw_complex* buffer, bool debug = false);

void chirpzFFT(size_t isize, fftw_complex* in, fftw_complex* out, double a,
        bool debug = false);

void chirpzFT_brute2(size_t isize, fftw_complex* in, fftw_complex* out, double a,
        bool debug = false);

void chirpzFT_brute(size_t len, fftw_complex* in, fftw_complex* out, double a);


void chirpzFT_zoom(size_t isize, fftw_complex* in, fftw_complex* out,
        double a);

void chirpzFT_zoom(size_t isize, fftw_complex* in, fftw_complex* out,
        fftw_complex* buffer, double a);

void writePlotAbsAng(std::string file, size_t insz, fftw_complex* in);

void writePlotReIm(std::string file, const std::vector<std::complex<double>>& in);

void writePlotReIm(std::string file, size_t insz, fftw_complex* in);

void zoom(size_t isize, fftw_complex* in, fftw_complex* out, double a);

}

#endif //CHIRPZ_H