A primitive example of column-at-a-time model

uselect_bt_void_int_bat_int_const.c

int uselect_bt_void_int_bat_int_const(oid *output, int *input, int value, int size) { 
  oid i; 
  int j = 0; 
  for (i = 0; i < size; i++) {
    if (input[i] > value) {
      output[j++] = i; 
    }
  }
  return j; 
}