• Top
    • Documentation
    • Books
    • Recursion-and-induction
    • Boolean-reasoning
    • Projects
    • Debugging
    • Std
    • Proof-automation
    • Macro-libraries
    • ACL2
      • Theories
      • Rule-classes
      • Proof-builder
      • Hons-and-memoization
      • Events
      • History
      • Parallelism
      • Programming
        • Defun
        • Declare
        • System-utilities
        • Stobj
        • State
        • Memoize
        • Mbe
        • Io
        • Apply$
        • Defpkg
        • Mutual-recursion
        • Loop$
        • Programming-with-state
        • Arrays
        • Characters
        • Time$
        • Loop$-primer
        • Fast-alists
          • Slow-alist-warning
          • Hons-acons
          • Fast-alist-fork
          • Hons-acons!
          • With-fast-alist
          • Fast-alist-clean
          • Fast-alist-pop
          • Fast-alist-free
          • Fast-alist-pop*
          • Hons-get
          • Hons-assoc-equal
          • Make-fast-alist
          • Make-fal
          • Fast-alist-free-on-exit
          • With-stolen-alist
          • Fast-alist-fork!
            • Hons-shrink-alist!
          • Fast-alist-summary
          • Fast-alist-clean!
          • Fast-alist-len
          • With-stolen-alists
          • Fast-alists-free-on-exit
          • Cons-subtrees
          • With-fast-alists
          • Hons-dups-p1
          • Ansfl
          • Hons-revappend
          • Hons-member-equal
          • Hons-make-list
          • Hons-reverse
          • Hons-list*
          • Hons-list
          • Hons-append
        • Defmacro
        • Defconst
        • Evaluation
        • Guard
        • Equality-variants
        • Compilation
        • Hons
        • ACL2-built-ins
        • Developers-guide
        • System-attachments
        • Advanced-features
        • Set-check-invariant-risk
        • Numbers
        • Irrelevant-formals
        • Efficiency
        • Introduction-to-programming-in-ACL2-for-those-who-know-lisp
        • Redefining-programs
        • Lists
        • Invariant-risk
        • Errors
        • Defabbrev
        • Conses
        • Alists
          • Std/alists
          • Omaps
          • Fast-alists
            • Slow-alist-warning
            • Hons-acons
            • Fast-alist-fork
            • Hons-acons!
            • With-fast-alist
            • Fast-alist-clean
            • Fast-alist-pop
            • Fast-alist-free
            • Fast-alist-pop*
            • Hons-get
            • Hons-assoc-equal
            • Make-fast-alist
            • Make-fal
            • Fast-alist-free-on-exit
            • With-stolen-alist
            • Fast-alist-fork!
              • Hons-shrink-alist!
            • Fast-alist-summary
            • Fast-alist-clean!
            • Fast-alist-len
            • With-stolen-alists
            • Fast-alists-free-on-exit
            • Cons-subtrees
            • With-fast-alists
            • Hons-dups-p1
            • Ansfl
            • Hons-revappend
            • Hons-member-equal
            • Hons-make-list
            • Hons-reverse
            • Hons-list*
            • Hons-list
            • Hons-append
          • Alistp
          • Misc/records
          • Remove-assocs
          • Assoc
          • Symbol-alistp
          • Rassoc
          • Remove-assoc
          • Remove1-assoc
          • Alist-map-vals
          • Depgraph
          • Alist-map-keys
          • Put-assoc
          • Strip-cars
          • Pairlis$
          • Strip-cdrs
          • Sublis
          • Acons
          • Eqlable-alistp
          • Assoc-string-equal
          • Standard-string-alistp
          • Alist-to-doublets
          • Character-alistp
          • Alist-keys-subsetp
          • R-symbol-alistp
          • R-eqlable-alistp
          • Pairlis
          • Pairlis-x2
          • Pairlis-x1
          • Delete-assoc
        • Set-register-invariant-risk
        • Strings
        • Program-wrapper
        • Get-internal-time
        • Basics
        • Packages
        • Defmacro-untouchable
        • Primitive
        • <<
        • Revert-world
        • Set-duplicate-keys-action
        • Unmemoize
        • Symbols
        • Def-list-constructor
        • Easy-simplify-term
        • Defiteration
        • Defopen
        • Sleep
      • Start-here
      • Real
      • Debugging
      • Miscellaneous
      • Output-controls
      • Macros
      • Interfacing-tools
    • Interfacing-tools
    • Hardware-verification
    • Software-verification
    • Testing-utilities
    • Math
  • Fast-alists
  • ACL2-built-ins

Fast-alist-fork!

(fast-alist-fork! alist ans) is an alternative to fast-alist-fork that produces a normed result.

Logically this function is just fast-alist-fork; we leave it enabled and would think it odd to ever prove a theorem about it.

Under the hood, this is the same as fast-alist-fork except that it uses something like hons-acons! instead of hons-acons. You generally should not use this function unless you really know what you're doing and understand the drawbacks discussed in hons-acons!.

Subtopics

Hons-shrink-alist!
Deprecated feature