static void vertical_decompose97iH0(int *b0, int *b1, int *b2, int width){
static void vertical_decompose97iH0(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
static void vertical_decompose97iH0(int *b0, int *b1, int *b2, int width){    int i;        for(i=0; i<width; i++){        b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;    }}