66     if (t == NULL) return t;  in splaytree_splay()
67     N.left = N.right = NULL;  in splaytree_splay()
73             if (t->left == NULL) break;  in splaytree_splay()
79                 if (t->left == NULL) break;  in splaytree_splay()
85             if (t->right == NULL) break;  in splaytree_splay()
91                 if (t->right == NULL) break;  in splaytree_splay()
114     if (t != NULL) {  in splaytree_insert()
122     if (t == NULL) {  in splaytree_insert()
123 	new->left = new->right = NULL;  in splaytree_insert()
127 	t->left = NULL;  in splaytree_insert()
131 	t->right = NULL;  in splaytree_insert()
142     if (t==NULL) return NULL;  in splaytree_delete()
145 	if (t->left == NULL) {  in splaytree_delete()