PROOF.p_mask_fast: def of bend-osdev-bytes@0.1.1.0
Import: import bend-osdev-bytes@0.1.1.0/PROOF.bend as PROOF
Lines 572-576 of bend-osdev-bytes@0.1.1.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-bytes@0.1.1.0/PROOF.bend&start_line=572&end_line=576

import Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B

def p_mask_fast(+xs: List<&2, U32>) -> {B.mask(xs) == B.mask.fast(xs) : List<&2, U32>}:
  Equal.sym(List<&2, U32>, B.mask.fast(xs), B.mask(xs),
    Equal.trans(List<&2, U32>, B.mask.fast(xs), B.rev_onto(B.rev_onto(B.mask(xs), Nil{}), Nil{}), B.mask(xs),
      Equal.cong(List<&2, U32>, List<&2, U32>, l => B.rev_onto(l, Nil{}), B.mask.go(xs, Nil{}), B.rev_onto(B.mask(xs), Nil{}), g_mask(xs, Nil{})),
      rr_back(B.mask(xs))))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.cong
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.trans
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/PROOF.bend&name=g_mask
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/PROOF.bend&name=rr_back
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=mask
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=mask.fast
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=mask.go
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=rev_onto