void xrow_add(xrow_t*xrow, int32_t x);
void xrow_sort(xrow_t*xrow);
+int xrow_find(xrow_t*r, int32_t x);
char xrow_contains(xrow_t*xrow, int32_t x);
-void xrow_dump(xrow_t*xrow);
+void xrow_dump(xrow_t*xrow, double gridsize);
void xrow_reset(xrow_t*xrow);
void xrow_destroy(xrow_t*xrow);