Gaussian blur

int gauss_fact[gauss_width]={1,6,15,20,15,6,1};
int gauss_sum=64;

for(i=1;i<temp->w-1;i++){
  for(j=1;j<temp->h-1;j++){
    sumr=0;
    sumg=0;
    sumb=0;
    for(k=0;k<gauss_width;k++){
      color=getpixel(temp,i-((gauss_width-1)>>1)+k,j);
      r=getr32(color);
      g=getg32(color);
      b=getb32(color);
      sumr+=r*gauss_fact[k];
      sumg+=g*gauss_fact[k];
      sumb+=b*gauss_fact[k];

    }
    putpixel(temp1,i,j,makecol(sumr/gauss_sum,sumg/gauss_sum,
      sumb/gauss_sum));
  }
}