Core.small0: def of bend-collections@1.0.0.0
Import: import bend-collections@1.0.0.0/src/crypto/sha512/core.bend as Core
Lines 40-45 of bend-collections@1.0.0.0/src/crypto/sha512/core.bend: https://jend.leeeet.dev/read.txt?path=bend-collections@1.0.0.0/src/crypto/sha512/core.bend&start_line=40&end_line=45

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

# FIPS 180-4 (4.12): ROTR1 ^ ROTR8 ^ SHR7
def small0(x: T.Lane) -> T.Lane:
  match x:
    case T.W{+hi, +lo}:
      T.W{U32.xor(U32.xor(U32.or(U32.shrn(hi, 1n), U32.shln(lo, 31n)), U32.or(U32.shrn(hi, 8n), U32.shln(lo, 24n))), U32.shrn(hi, 7n)),
        U32.xor(U32.xor(U32.or(U32.shrn(lo, 1n), U32.shln(hi, 31n)), U32.or(U32.shrn(lo, 8n), U32.shln(hi, 24n))), U32.or(U32.shrn(lo, 7n), U32.shln(hi, 25n)))}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.shln
  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
  https://jend.leeeet.dev/definition.txt?path=bend-collections@1.0.0.0/src/crypto/sha512/types.bend&name=Lane