glib: add internal g_uint_hash()/g_uint_equal()

We have g_int_hash()/g_int_equal(), which in practice might also work
with with pointers to unsigned integers. However, according to strict
interpretation of C, I think it is not valid to conflate the two.

Even if it were valid in all cases that we want to support, we should
still have separate g_uint_{hash,equal} functions (e.g. by just #define
them to their underlying g_int_{hash,equal} implementations).

Add instead internal hash/equal functions for guint.

glib/ghash.c

@@ -2552,6 +2552,50 @@ g_int_hash (gconstpointer v)
   return *(const gint*) v;
 }
 
+/**
+ * g_uint_equal:
+ * @v1: (not nullable): a pointer to a #guint key
+ * @v2: (not nullable): a pointer to a #guint key to compare with @v1
+ *
+ * Compares the two #guint values being pointed to and returns
+ * %TRUE if they are equal.
+ * It can be passed to g_hash_table_new() as the @key_equal_func
+ * parameter, when using non-%NULL pointers to integers as keys in a
+ * #GHashTable.
+ *
+ * Note that this function acts on pointers to #guint, not on #guint
+ * directly: if your hash table's keys are of the form
+ * `GUINT_TO_POINTER (n)`, use g_direct_equal() instead.
+ *
+ * Returns: %TRUE if the two keys match.
+ */
+gboolean
+g_uint_equal (gconstpointer v1,
+              gconstpointer v2)
+{
+  return *((const guint *) v1) == *((const guint *) v2);
+}
+
+/**
+ * g_uint_hash:
+ * @v: (not nullable): a pointer to a #guint key
+ *
+ * Converts a pointer to a #guint to a hash value.
+ * It can be passed to g_hash_table_new() as the @hash_func parameter,
+ * when using non-%NULL pointers to integer values as keys in a #GHashTable.
+ *
+ * Note that this function acts on pointers to #guint, not on #guint
+ * directly: if your hash table's keys are of the form
+ * `GUINT_TO_POINTER (n)`, use g_direct_hash() instead.
+ *
+ * Returns: a hash value corresponding to the key.
+ */
+guint
+g_uint_hash (gconstpointer v)
+{
+  return *(const guint *) v;
+}
+
 /**
  * g_int64_equal:
  * @v1: (not nullable): a pointer to a #gint64 key

glib/glib-private.h

@@ -303,4 +303,7 @@ GLibPrivateVTable *glib__private__ (void);
 # define GLIB_DEFAULT_LOCALE ""
 #endif
 
+gboolean g_uint_equal (gconstpointer v1, gconstpointer v2);
+guint g_uint_hash (gconstpointer v);
+
 #endif /* __GLIB_PRIVATE_H__ */