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//
// File: hann.cpp
//
// MATLAB Coder version : 5.3
// C/C++ source code generated on : 31-Mar-2023 11:34:29
//
// Include Files
#include "hann.h"
#include "dereveb_c_rtwutil.h"
#include "gencoswin.h"
#include "iseven.h"
#include "rt_nonfinite.h"
#include "coder_array.h"
#include <cmath>
// Function Definitions
//
// Arguments : double varargin_1
// ::coder::array<double, 1U> &w
// Return Type : void
//
namespace coder {
void hann(double varargin_1, ::coder::array<double, 1U> &w)
{
array<double, 1U> b_w;
double L;
int i;
int trivialwin;
int w_size;
signed char w_data;
w_size = 1;
w_data = 0;
trivialwin = 0;
if (varargin_1 == std::floor(varargin_1)) {
L = varargin_1;
} else {
L = std::round(varargin_1);
}
if (L == 0.0) {
w_size = 0;
trivialwin = 1;
} else if (L == 1.0) {
w_data = 1;
trivialwin = 1;
}
w.set_size(w_size);
for (i = 0; i < w_size; i++) {
w[0] = w_data;
}
if (trivialwin == 0) {
if (iseven(L + 1.0)) {
int i1;
int loop_ub;
calc_window((L + 1.0) / 2.0, L + 1.0, w);
if (2 > w.size(0)) {
i = 0;
w_size = 1;
i1 = -1;
} else {
i = w.size(0) - 1;
w_size = -1;
i1 = 1;
}
trivialwin = div_s32_floor(i1 - i, w_size);
b_w.set_size((w.size(0) + trivialwin) + 1);
loop_ub = w.size(0);
for (i1 = 0; i1 < loop_ub; i1++) {
b_w[i1] = w[i1];
}
for (i1 = 0; i1 <= trivialwin; i1++) {
b_w[i1 + w.size(0)] = w[i + w_size * i1];
}
w.set_size(b_w.size(0));
trivialwin = b_w.size(0);
for (i = 0; i < trivialwin; i++) {
w[i] = b_w[i];
}
} else {
int i1;
int loop_ub;
calc_window(((L + 1.0) + 1.0) / 2.0, L + 1.0, w);
if (2 > w.size(0) - 1) {
i = 0;
w_size = 1;
i1 = -1;
} else {
i = w.size(0) - 2;
w_size = -1;
i1 = 1;
}
trivialwin = div_s32_floor(i1 - i, w_size);
b_w.set_size((w.size(0) + trivialwin) + 1);
loop_ub = w.size(0);
for (i1 = 0; i1 < loop_ub; i1++) {
b_w[i1] = w[i1];
}
for (i1 = 0; i1 <= trivialwin; i1++) {
b_w[i1 + w.size(0)] = w[i + w_size * i1];
}
w.set_size(b_w.size(0));
trivialwin = b_w.size(0);
for (i = 0; i < trivialwin; i++) {
w[i] = b_w[i];
}
}
}
}
} // namespace coder
//
// File trailer for hann.cpp
//
// [EOF]
//

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