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c code to compute twiddle factor


I am computing C code for fft for 50 samples. ex:[1 2 3 4....until 50]

Before computing fft i have to compute twiddle factor.twiddle factor formula contains the imaginary part.I have to write a for loop or any other loops to compute for 50 samples.
Is it possible to write a code by using any loop for a twiddle factor value of WN=(0.992-0.125i)?

for 50 samples N=50, k=0,1,2...N-1, n=49
formula for fft and twiddle factor is given in the below links. and fft tutorial/images/DFTEquation.jpg
Please help me with this
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