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def jpeg.quant.valid

gralha-jpeg-decode@0.1.0.1 · jpeg.bend:239

import gralha-jpeg-decode@0.1.0.1/jpeg.bend as Jpeg
import Base
import gralha-bytes@0.1.0.1/bytes.bend as Bin

239def jpeg.quant.valid(n: Nat, +index: U32, +quant: Bin.Bytes) -> Bool:
240  match n:
241    case 0n: U32.is_eq(Bin.bytes.size(quant), 64)
242    case 1n+d: U32.is_gt(Bin.bytes.get(quant, index), 0) && jpeg.quant.valid(d, U32.inc(index), quant)

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