I noticed that there is no special code for any of the following: (J7-64) a =. ? 1e6 # 256 ts '2 2 2 2 2 2 2 2 #: a'
0.124369 6.71107e7 ts '4 2 4 2 4 2 #: a' 0.0943141 6.71105e7 a2 =.? 1e6 # 256^2 ts '8 8 4 2 4 2 4 2 #: a2' 0.144685 6.71107e7 a3 =.? 1e6 # 1-~256^4 a2 =.? 1e6 # 1-~256^2 ts '8 8 4 2 4 2 4 2 #: a2' 0.141351 6.71107e7 ts '256 256 8 8 4 2 4 2 4 2 #: a3' 0.247149 1.3422e8 ts '512 512 128 128 #: a3' 0.0837122 3.35561e7 ts '256 256 256 256 #: a3' 0.0805493 3.35561e7 Is there a way to do bit unpacking more efficiently (space wise)? I notice the huffman encoding lab is faster and smaller even though it seems to be doing much more work. t=: 'the quick brown fox jumps over the lazy dog ' x=: 1e6 $ t ts 'HA hencode x' 0.0267345 1.67822e7 ts 'SB hdecode y' 0.0491284 1.78308e7 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
