Mon, 12 Jan 2009 08:46:07 -0800 add recursion combinator poly_rec; define poly function using poly_rec
huffman [Mon, 12 Jan 2009 08:46:07 -0800] rev 29454
add recursion combinator poly_rec; define poly function using poly_rec
(0) -10000 -3000 -1000 -300 -100 -30 -10 -1 +1 +10 +30 +100 +300 +1000 +3000 +10000 +30000 tip