31 lines
575 B
JavaScript
31 lines
575 B
JavaScript
// Copyright (c) 2004 by Arthur Langereis (arthur_ext at domain xfinitegames, tld com)
|
|
|
|
|
|
var result = 0;
|
|
|
|
// 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;
|
|
var sum = 0;
|
|
for(var x=0; x<35000; x++)
|
|
for(var y=0; y<256; y++) sum += func(y);
|
|
return sum;
|
|
}
|
|
|
|
result = TimeFunc(bitsinbyte);
|
|
|
|
var expected = 35840000;
|
|
if (result != expected)
|
|
throw "ERROR: bad result: expected " + expected + " but got " + result;
|
|
|