function range1(start, stop, step, from, to) {

    if(from) {

        var value = start;

    }

    else {

        var value = start + step;

    }

    var length = Math.max(Math.ceil((stop - value) / step), 0);

    if(to && (stop % step === start % step)) {

        ++length;

    }

    var array = Array(length);

    for(var i = 0; i < length; i++, value += step) {

        array[i] = value;

    }

    return array;

};

​

​

function range2(start, stop, step, from, to) {

    var array = [];

    for(var i = from ? start : start + step, l = to ? stop + 1 : stop; i < l; i += step) {

        array.push(i);

    }

    return array;

};

​

function range3(start, stop, step, from, to) {

    var length = (stop - start) / step;

    if(length > 100) {

        if(from) {

            var value = start;

        }

        else {

            var value = start + step;

        }

        length = Math.max(Math.ceil(length), 0);

        if(to && (stop % step === start % step)) {

            ++length;

        }

        var array = Array(length);

        for(var i = 0; i < length; i++, value += step) {

            array[i] = value;

        }

    }

    else {

        var array = [];

        for(var i = from ? start : start + step, l = to ? stop + 1 : stop; i < l; i += step) {

            array.push(i);

        }

    }

    return array;

};