This program is open source code of fast Fourier transform in matlab. Where y is the input argument and p is the normalized size of the input. Let y = [1 2 3 4 ] x= length(y) m= log2(x) p= ceil(m) To call the function use ft2(y,p) -This program is open source code of fast Fourier transform in matlab.　Where y is the input argument and p is the normalized size of the input. Let　y = [1 2 3 4 ]　 x= length(y)　 m= log2(x)　 p= ceil(m)　 To call the function use　ft2(y,p)