+void type_set_output(FILE *out);
+
+void inc_type_visited(void);
+
+/**
+ * returns true if type contains integer numbers
+ */
+bool is_type_integer(const type_t *type);
+
+/**
+ * return true if type contains signed numbers
+ */
+bool is_type_signed(const type_t *type);
+
+/**
+ * returns true if type contains floating point numbers
+ */
+bool is_type_float(const type_t *type);
+
+bool is_type_real(const type_t *type);
+
+/**
+ * returns true if the type is valid. A type is valid if it contains no
+ * unresolved references anymore and is not of TYPE_INVALID.
+ */
+bool type_valid(const type_t *type);
+
+/**
+ * returns true if the type is an arithmetic type (6.2.18)
+ */
+bool is_type_arithmetic(const type_t *type);
+
+/**
+ * returns true if the type is a scalar type (6.2.21)
+ */
+bool is_type_scalar(const type_t *type);
+
+bool is_type_incomplete(const type_t *type);
+
+bool is_type_object(const type_t *type);
+
+bool types_compatible(const type_t *type1, const type_t *type2);
+
+bool pointers_compatible(const type_t *type1, const type_t *type2);
+
+type_t *get_unqualified_type(type_t *type);
+type_t *skip_typeref(type_t *type);
+
+/**
+ * returns size of an atomic type kind in bytes
+ */
+unsigned get_atomic_type_size(atomic_type_kind_t kind);
+
+/**
+ * returns alignment of an atomic type kind in bytes
+ */
+unsigned get_atomic_type_alignment(atomic_type_kind_t kind);
+
+/**
+ * returns flags of an atomic type kind
+ */
+unsigned get_atomic_type_flags(atomic_type_kind_t kind);
+
+atomic_type_kind_t get_intptr_kind(void);
+atomic_type_kind_t get_uintptr_kind(void);