Introduction - If you have any usage issues, please Google them yourself
: pr [n]-- imported real pi [n]-- the number-n, the imaginary part, k-- meet n = 2 ^ k fr [n]-- the real output fi [n]-- output of the imaginary part 1-- 0 FF T, a IFFT il-- 0 output in real/imaginary parts; Die output by 1/Angle