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Create and insert a node at the head of a doubly linked list.
#include <linklist/linklist.h>int dll_insert_head( DLinkList ull, void *data );
DLinkList ull
- a handle to the list into which to insert the node
void *data
- a pointer to the new node's data
This routine creates a node, inserts the passed data pointer in it, and attaches the node to the head of the list.
It returns zero if the insert was successful, non-zero if it was unable to create the new node.