Core.choose: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/src/crypto/sha512/core.bend as Core
Lines 54-58 of bend-collections-laws-crypto@1.0.0.0/src/crypto/sha512/core.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/sha512/core.bend&start_line=54&end_line=58

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/sha512/types.bend as T

def choose(x: T.Lane, y: T.Lane, z: T.Lane) -> T.Lane:
  match x y z:
    case T.W{+xh, +xl} T.W{yh, yl} T.W{zh, zl}:
      T.W{U32.xor(U32.and(xh, yh), U32.and(U32.not(xh), zh)),
        U32.xor(U32.and(xl, yl), U32.and(U32.not(xl), zl))}

Uses (4):
  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.xor
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/sha512/types.bend&name=Lane