Fast.zb: def of lawful-bytes@0.1.1.0
Import: import lawful-bytes@0.1.1.0/fast.bend as Fast
Lines 11-14 of lawful-bytes@0.1.1.0/fast.bend: https://jend.leeeet.dev/read.txt?path=lawful-bytes@0.1.1.0/fast.bend&start_line=11&end_line=14

import Base

# 0x80 at each byte of v that is 0, exact at the lowest such byte (a byte
# above a 0 byte may be flagged too).
def zb(+v: U32) -> U32:
  ((v - 16843009 : U32) .&. (U32.not(v) .&. 2155905152 : U32) : U32)

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.and
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.sub