haming test

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
#include <stdint.h>



void hamming1(int tab[]){
    for(int i=0;i<1024;i++){
        int32_t tmp = tab[i];
        tmp*=(518589 - (int)(cos(i*2*3.14/1024)*14*32768));
        //printf("%f\n",(cos(i*2*3.14/1024)*14*32768));
        tmp>>=(16);
        tab[i]=tmp;
    }
}


void hamming2(int tab[]){
    for(int i=0;i<1024;i++){
    tab[i]*=((int)(0.538*65535)-(int)(0.4616*65536*cos(2*3.14*i/1024)));
    tab[i]>>=(16);}
}


int signal[1024];
int out1[1024];
int out2[1024];

int main()
{
    srand(time(0));
    for(int i =0;i<1024;i++){
        //signal[i] = ((1024 * rand()) / RAND_MAX);
        signal[i]=512;
        out1[i]=signal[i];
        out2[i]=signal[i];
    }

    hamming1(out1);
    hamming2(out2);


    for(int i=0;i<(1024);i++){
        printf("nr = %d, in = %d, hamming1 = %d, hamming2 = %d \n",i,signal[i], out1[i],out2[i]);
    }
}