Add My Command to Service Menu

It’s absolutely delicious!

float inverse_sqrt(float x) {
    float xhalf = 0.5f * x;
    int i = *(int*)&x;
    i = 0x5f375a86 - (i >> 1);
    x = *(float*)&i;
    x = x * (1.5f - xhalf * x * x);
    return x;
}

explanation