function duffFastLoop8(iterations) {

// from an anonymous donor to Jeff Greenberg's site

    var testVal=0;	
    var n = iterations % 8;
    while (n--)
    {
        testVal++;
    }
    
    n = parseInt(iterations / 8);
    while (n--)
    {
        testVal++;
        testVal++;
        testVal++;
        testVal++;
        testVal++;
        testVal++;
        testVal++;
        testVal++;
    }
}