def but.sum
import emerging-ezaudio@0.4.0.0/src/mp3_syn.bend as Mp3Synimport Base
582# first add/sub stage of a DCT-II row
583def but.sum(+x0: F32, +x1: F32, +x2: F32, +x3: F32, +x4: F32, +x5: F32, +x6: F32, +x7: F32) -> E8:
584 but.sum2(f.sub(x0, x7), f.add(x0, x7), f.sub(x1, x6), f.add(x1, x6), f.sub(x2, x5), f.add(x2, x5),
585 f.sub(x3, x4), f.add(x3, x4))