#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <io.h>

#define K 100000
#define T 100000

void main()
{
 
 float coeff[65]={0.000001, 0.000002, -0.000002, -0.000016, -0.000049, -0.000109, -0.000210,
   -0.000361, -0.000569, -0.000829, -0.001128, -0.001432, -0.001687, -0.001818,
   -0.001725, -0.001290, -0.000383, 0.001125, 0.003355, 0.006399, 0.010310,
   0.015084, 0.020654, 0.026882, 0.033561, 0.040426, 0.047164, 0.053438,
   0.058912, 0.063275, 0.066270, 0.067713, 0.067511, 0.065670, 0.062295,
   0.057583, 0.051800, 0.045267, 0.038327, 0.031322, 0.024566, 0.018324,
   0.012800, 0.008126, 0.004361, 0.001499, -0.000524, -0.001811, -0.002493,
   -0.002709, -0.002599, -0.002286, -0.001872, -0.001437, -0.001035, -0.000695,
   -0.000431, -0.000242, -0.000118, -0.000045, -0.000008, 0.000007, 0.000009,
   0.000006, 0.000002};

 int m=0, n=0, i=0;
 char buf[2]={0};
 int temp[K]={0};
 int tbuf[T]={0};
 int nRead=0;
 
 float conv_sum=0;
 
 FILE *fpin, *fpout;
 

 fpin=fopen("sp_radio.raw","rb");
 if (fpin != NULL)
 {

          fpout=fopen("sp_radio_out.raw","wb");
    if (fpout != NULL)
    {
    for(n=0;n<=feof(fpin);n++);
    {
     for(m=0;m<=n;m++)
     {
      nRead=fread(buf,2,1,fpin);
      temp[i++]=nRead;
      tbuf[n]=tbuf[n]+temp[m]*coeff[n-m];
      fwrite(buf,2,tbuf[n],fpout);
      
     }
            
    }
                   fclose(fpout);

          }

          fclose(fpin);

     }

}

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