direct_hash

Converts a gpointer to a hash value.

It can be passed to g_hash_table_new as the hash_func parameter, when using opaque pointers compared by pointer value as keys in a GenericSet.

This hash function is also appropriate for keys that are integers stored in pointers, such as `GINT_TO_POINTER (n)`.

Parameters:

v	a gpointer key

Returns:

a hash value corresponding to the key.