#define HOST_BITS_PER_DOUBLE_INT (2 * HOST_BITS_PER_WIDE_INT)
+union tree_node;
+
/* Constructors and conversions. */
/* Constructs double_int from integer CST. The bits over the precision of
double_int double_int_divmod (double_int, double_int, bool, unsigned, double_int *);
double_int double_int_sdivmod (double_int, double_int, unsigned, double_int *);
double_int double_int_udivmod (double_int, double_int, unsigned, double_int *);
-double_int double_int_setbit (double_int, unsigned);
/* Logical operations. */
static inline double_int