Protobuf.Word64.zigzag: def of bend-kit-protobuf@0.2.0.0
Import: import bend-kit-protobuf@0.2.0.0/protobuf.bend as Protobuf
Lines 40-43 of bend-kit-protobuf@0.2.0.0/protobuf.bend: https://jend.leeeet.dev/read.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&start_line=40&end_line=43

import Base

def Word64.zigzag(w: Word64) -> Word64:
  Word64{+h, +l} = w
  +mask = (0 - (h >> 31n) : U32)
  Word64{(((h << 1n) .|. (l >> 31n)) .^. mask : U32), ((l << 1n) .^. mask : U32)}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shln
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shrn
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.xor
  https://jend.leeeet.dev/definition.txt?path=bend-kit-protobuf@0.2.0.0/protobuf.bend&name=Word64