/**
 * Small helper function to translate slider step values into
 * accelerated speed multipliers. The associative table is as follows:
 *
 * SLIDER_VALUE: 0    1    2    3    4    5    6    7    8    9    10   11
 * SPEED_MULTIP: 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 3.00 4.00 8.00 16.00
 */

static double get_turbo_speed(int value)
{
    double res;

    if (value >= 0 && <= 7) {
        res = 0.25 * (value + 1);
    } else if (value == 8 || value == 9) {
        res = value - 5;
    } else if (value == 10) {
        res = 8
    } else if (value == 11) {
        res = 16;
    }

    return res;
}