function scr_ease_in_dx(arg0, arg1, arg2, arg3, arg4)
{
    if (arg4 < -3 || arg4 > 6)
        return arg0;
    switch (arg4)
    {
        case -3:
            return ease_in_bounce(arg0, arg1, arg2, arg3);
        case -2:
            return ease_in_elastic(arg0, arg1, arg2, arg3);
        case -1:
            var _s = 1.70158;
            return arg0 * arg0 * (((_s + 1) * arg0) - _s);
        case 0:
            arg0 /= arg3;
            return -cos(arg0 * 1.5707963267948966) + 1;
        case 1:
            return power(2, 10 * (arg0 - 1));
        case 6:
            return -sqrt(1 - sqr(arg0));
        default:
            return (arg2 * power(arg0 / arg3, arg4)) + arg1;
    }
}