Why does this code not do cube roots of negative numbers?

Question

I was writing a function in C used to make roots of numbers, and I stumbled upon a problem: it works really well with cube roots of positive numbers and square roots, but when I try to make a cube root of a negative numer, it returns: -1.#IND00 I tried researching and it turns out the returned number is too big, but I can't understand why... ('rooter' is the function, x is the radicand and ind is the degree.)

I also tried to put in '0.66' instead of 1/ind but the same result happens.

float rooter(int x, int ind)
{
    if(ind%2==0)
    {
        if (x>=0)
            return ( pow(x, 1.0/ind) );
        else
            errore=1;
        return -1;
    }
    else
    {
        return ( pow(x, (float)1.0/ind) );
    }
}

Answer 1

pow does not accept negative base for non integer exponent. (Probably because making the special cases where it is traditionally defined work is too burdensome especially when it is expected to be implemented using logarithms.)