Aesround.ad.aes.x2: def of bend-osdev-aead@0.1.0.0
Import: import bend-osdev-aead@0.1.0.0/aesround.bend as Aesround
Lines 152-154 of bend-osdev-aead@0.1.0.0/aesround.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-aead@0.1.0.0/aesround.bend&start_line=152&end_line=154

import Base

# x times 2 in GF(2^8) (xtime, FIPS 197 4.2.1)
def ad.aes.x2(+a: U32) -> U32:
  U32.xor(U32.and(255, U32.shl(a)), U32.mul(27, U32.shrn(a, 7n)))

Uses (6):
  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.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shl
  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.xor