nomos-specs/da/kzg_rs/test_fft.py

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from unittest import TestCase
from da.kzg_rs.common import BLS_MODULUS
from fft import fft, ifft
class TestFFT(TestCase):
def test_fft_ifft(self):
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roots_of_unity = [pow(23674694431658770659612952115660802947967373701506253797663184111817857449850, i, BLS_MODULUS) for i in range(1024)]
vals = list(x for x in range(1024))
vals_fft = fft(vals, roots_of_unity, BLS_MODULUS)
self.assertEqual(vals, ifft(vals_fft, roots_of_unity, BLS_MODULUS))