(struct image *P(img)
# ifdef IMAGE_WALK_DOUBLE
, struct image *P(sec_img)
(struct image *P(img)
# ifdef IMAGE_WALK_DOUBLE
, struct image *P(sec_img)
#undef IMAGE_WALK_SEC_PIXELS
#undef IMAGE_WALK_SEC_COLS
#undef IMAGE_WALK_SEC_ROWS
#undef IMAGE_WALK_SEC_PIXELS
#undef IMAGE_WALK_SEC_COLS
#undef IMAGE_WALK_SEC_ROWS