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| |
| <title>SunSpider bitops-bits-in-byte</title> |
| <link rel="stylesheet" href="sunspider.css"> |
| </head> |
| |
| <body> |
| <h3>bitops-bits-in-byte</h3> |
| <div id="console"> |
| </div> |
| <script src="sunspider-record-result.js"></script> |
| <script> |
| |
| var _sunSpiderStartDate = new Date(); |
| |
| // Copyright (c) 2004 by Arthur Langereis (arthur_ext at domain xfinitegames, tld com) |
| |
| |
| // 1 op = 2 assigns, 16 compare/branches, 8 ANDs, (0-8) ADDs, 8 SHLs |
| // O(n) |
| function bitsinbyte(b) { |
| var m = 1, c = 0; |
| while(m<0x100) { |
| if(b & m) c++; |
| m <<= 1; |
| } |
| return c; |
| } |
| |
| function TimeFunc(func) { |
| var x, y, t; |
| for(var x=0; x<350; x++) |
| for(var y=0; y<256; y++) func(y); |
| } |
| |
| TimeFunc(bitsinbyte); |
| |
| |
| var _sunSpiderInterval = new Date() - _sunSpiderStartDate; |
| |
| record(_sunSpiderInterval); |
| </script> |
| |
| |
| </body> |
| </html> |
