def zb

lawful-words@0.1.0.0 · defs.bend:56

import Base

56# The zero-byte flags: (v - 0x01010101) & ~v & 0x80808080. It is zero exactly
57# when no byte of v is zero (law zb_zero); individual flags are not exact.
58def zb(+v: U32) -> U32:
59  U32.and(U32.and(U32.sub(v, 16843009), U32.not(v)), 2155905152)