for(i=0;i<h;i++) {
for(i=0;i<16;i++) {
int pix_abs16x16_c(UINT8 *pix1, UINT8 *pix2, int line_size, int h){    int s, i;    s = 0;    for(i=0;i<h;i++) {        s += abs(pix1[0] - pix2[0]);        s += abs(pix1[1] - pix2[1]);        s += abs(pix1[2] - pix2[2]);        s += abs(pix1[3] - pix2[3]);        s += abs(pix1[4] - pix2[4]);        s += abs(pix1[5] - pix2[5]);        s += abs(pix1[6] - pix2[6]);        s += abs(pix1[7] - pix2[7]);        s += abs(pix1[8] - pix2[8]);        s += abs(pix1[9] - pix2[9]);        s += abs(pix1[10] - pix2[10]);        s += abs(pix1[11] - pix2[11]);        s += abs(pix1[12] - pix2[12]);        s += abs(pix1[13] - pix2[13]);        s += abs(pix1[14] - pix2[14]);        s += abs(pix1[15] - pix2[15]);        pix1 += line_size;        pix2 += line_size;    }    return s;}