strdup: just returns NULL for NULL */

pdf_merge_dict makes a link for each item in dict2 before stealing it */

ceil() and (int)() are implemented separately, which results in changing the FPCW multiple times - so we optimize it with some inline assembly or SSE

FIXME: dvi_forward() might be a better name */

NOTE: Acrobat 5 and prior uses 16.16 fixed point representation for * real numbers. */

Get <i>th character.

Is there a current point?

Get file name.

Initializes |trav| for |tree| and selects and returns a pointer to its least-valued item. Returns |NULL| if |tree| contains no nodes. */

Initializes |trav| for use with |tree| and selects the null node. */

Returns the next data item in inorder within the tree being traversed with |trav|, or if there are no more data items returns |NULL|. */