EXCHANGE_POINTS    71 src/lib/line.c       EXCHANGE_POINTS(x0, y0, x1, y1);
EXCHANGE_POINTS   247 src/lib/line.c 	   EXCHANGE_POINTS(x0, y0, x1, y1);                  \
EXCHANGE_POINTS   323 src/lib/line.c 	EXCHANGE_POINTS(x0, y0, x1, y1);                     \