def varint.add.low
import bend-kit-protobuf@0.2.0.0/protobuf.bend as Protobufimport Base
76def varint.add.low(fifth: Bool, +i: U32, +v: U32, h: U32, l: U32) -> Word64:
77 match fifth:
78 case False{}:
79 Word64{h, (l .|. (v << U32.to_nat((i * 7 : U32))) : U32)}
80 case True{}:
81 Word64{(h .|. (v >> 4n) : U32), (l .|. (v << 28n) : U32)}