Motor Curve Class

double motor_curve(double input) {
    //convert from -127 to 127 into -100 to 100
    input = (input * (127.0f / 100.0f));
    char toggle;
    if (input < 0) {
        toggle = -1;
    } else {
        toggle = 1;
    }
    //convert back and do final calculations
    return (100.0f / 127.0f) * (toggle * (std::exp((toggle * input) * 0.04615)));
}