apps/fft Does it have support for 1D FFT

[DeepaliReddy]

I was trying to use the apps/fft example for 1D FFT.
In fft_generator.cpp, it is mentioned that "Size of second dimension, may be zero for 1D FFT."
Therefore, I had given size0=16 & size1=0 for 1D FFT, but when the code goes through the below mentioned snippet(in fft.cpp),it works for size0 but ends up in an infinite loop for size1 as the while loop's condition is always true when N=0 :

vector<int> radix_factor(int N) { 
    // Some special cases to optimize.
    switch (N) {
    case 16:
        return {4, 4};
    case 32:
        return {8, 4};
    case 64:
        return {8, 8};
    case 128:
        return {8, 4, 4};
    case 256:
        return {8, 8, 4};
    }

   static const int radices[] = {8, 6, 4, 2};
    vector<int> R;
    for (int r : radices) {
        while (N % r == 0) {
            R.push_back(r);
            N /= r;
        }
    }

A few queries-

• Does the fft example have support for 1D FFT or it is only supported for 2D.

• If it does have support for 1D FFT, is making the size1 =0 suffice or is there anything else that needs to be done for it to support 1D.

Thanks.