diff options
Diffstat (limited to 'SunSpider/tests/bitops-bits-in-byte.js')
-rw-r--r-- | SunSpider/tests/bitops-bits-in-byte.js | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/SunSpider/tests/bitops-bits-in-byte.js b/SunSpider/tests/bitops-bits-in-byte.js new file mode 100644 index 0000000..9a3acd4 --- /dev/null +++ b/SunSpider/tests/bitops-bits-in-byte.js @@ -0,0 +1,21 @@ +// 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); |