itohy f89823c1f8 Save 1-4 instructions on all cases except for the ret=0 case. ... This is probably the last version from me. :) You are welcome to speed it up, of course. :) Here's a benchmark on SH-4 200MHz. 9.2% faster if all the cases occur evenly. return value C version previous vers this version speed ratio of ffs() (ns/call) *1 (ns/call) (ns/call) *2 (*1/*2) ------------ ------------ ------------- ------------ ----------- 0 86 81 81 1.06 1 110 106 91 1.21 2 132 106 92 1.43 3 165 117 96 1.72 4 201 116 95 2.12 5 237 107 99 2.39 6 271 106 101 2.68 7 307 116 107 2.87 8 342 116 105 3.26 9 376 126 111 3.39 10 410 127 110 3.73 11 446 136 115 3.88 12 483 134 116 4.16 13 518 125 119 4.35 14 551 126 120 4.59 15 587 135 127 4.62 16 624 136 126 4.95 17 658 139 126 5.22 18 694 140 126 5.51 19 727 148 131 5.55 20 764 150 131 5.83 21 799 141 135 5.92 22 834 142 135 6.18 23 868 152 140 6.20 24 903 153 142 6.36 25 939 140 127 7.39 26 974 141 126 7.73 27 1009 152 131 7.70 28 1044 148 130 8.03 29 1080 141 136 7.94 30 1115 141 136 8.20 31 1151 151 141 8.16 32 1185 151 140 8.46		2002-09-01 13:14:53 +00:00
..
libkern	Save 1-4 instructions on all cases except for the ret=0 case.	2002-09-01 13:14:53 +00:00
libsa	use exit(int), not exit(void), consistently - even if the arg has no meaning.	2002-06-01 11:40:31 +00:00
libz	Fix make breakage. $ZDST != ${ZDST} in make. make clean/cleandir now works.	2002-06-15 19:30:56 +00:00