// file: csnr_cal_6.cc
//
// this function calculates the pdf of the energy of the signal
//

// system include file
//
#include <math.h>

// local include file
//
#include "global_constants.h"
#include "calculate_snr_constants.h"
#include "calculate_snr.h"

// function: calculate_pdf_cc
//
// arguments:
//    float**& pdf_a: (output) pdf of the energy of the signal
//    float** bin_freqs_a: (input) count of each bin
//    int num_energy_vals_a: (input) number of energy points in
//                           the buffer
//    int num_chans_a: (input) number of channels
//    int debug_mode_a: (input) debug mode
//
// return: an int to indicate status
//
// this function calculates the pdf of the energy of a signal
//
//
int calculate_pdf_cc (float**& pdf_a, int** bin_freqs_a, int num_energy_vals_a,
		      int num_chans_a, int debug_mode_a) {

  for (int j = 0; j < num_chans_a; j++) {
    for (int i = 0; i < CSNR_NUM_BINS; i++) {
      pdf_a[j][i] = (float)bin_freqs_a[j][i] / num_energy_vals_a;
    }
  }

  if (debug_mode_a > DEBUG_BRIEF) {
    for (int j = 0; j < num_chans_a; j++) {
      for (int i = 0; i < CSNR_NUM_BINS; i++) {
	fprintf(stdout, "chan %d :: pdf = %.2f\n", j, pdf_a[j][i]);
      }
    }
    fprintf(stdout, "\n");
  }

  // exit gracefully
  //
  return TRUE;
}