// file: csnr_cal_7.cc
//
// this function calculates the cdf of the energy of the signal
//

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

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

// function: calculate_cdf_cc
//
// arguments:
//    float**& cdf_a: (output) cdf of the energy of the signal
//    float**  pdf_a: (input) pdf of the energy of the signal
//    int num_chans_a: (input) number of channels
//    int debug_mode_a: (input) debug level
//
// return: an int to indicate status
//
// this function calculates the cdf of the energy of a signal
//
//
int calculate_cdf_cc (float**& cdf_a, float** pdf_a, int num_chans_a,
		      int debug_mode_a) {
  
  for (int j = 0; j < num_chans_a; j++) {
    cdf_a[j][0] = pdf_a[j][0];

    // loop over all bins
    //
    for (int i = 1; i < CSNR_NUM_BINS; i++) {
      cdf_a[j][i] = pdf_a[j][i] + cdf_a[j][i - 1];
    }
  }

  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 :: cdf = %.2f\n", j, cdf_a[j][i]);
      }
    }
    fprintf(stdout, "\n");
  }
 
  // exit gracefully
  //
  return TRUE;
}