static void vertical_decompose97iL1(int *b0, int *b1, int *b2, int width){
static void vertical_decompose97iL1(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, int width){
static void vertical_decompose97iL1(int *b0, int *b1, int *b2, int width){    int i;        for(i=0; i<width; i++){        b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;    }}