• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Community
  • Std
    • Std/lists
    • Omaps
    • Std/alists
    • Obags
    • Std/util
    • Std/strings
      • Pretty-printing
      • Printtree
      • Base64
      • Charset-p
      • Strtok!
      • Cases
      • Concatenation
      • Character-kinds
      • Html-encoding
      • Substrings
      • Strtok
      • Equivalences
      • Url-encoding
      • Lines
      • Explode-implode-equalities
      • Ordering
      • Numbers
        • Decimal
        • Hex
          • Parse-hex-from-string
          • Hex-digit-char-p
          • Nat-to-hex-chars
          • Parse-hex-from-charlist
          • Hex-digit-chars-value
          • Hex-digit-char-value
          • Take-leading-hex-digit-chars
          • Hexify
          • Hex-digit-char-listp
          • Hex-digit-char-list*p
          • Hex-digit-string-p
          • Strval16
          • Skip-leading-hex-digits
          • Nat-to-hex-string
          • Hexify-width
          • Nonzero-hex-digit-char-p
          • Nat-to-hex-string-list
          • Revappend-nat-to-hex-chars
            • Revappend-nat-to-hex-chars-aux
          • Hex-digit-to-char
          • Nat-to-hex-string-size
        • Octal
        • Binary
      • Pad-trim
      • Coercion
      • Std/strings/digit-to-char
      • Substitution
      • Symbols
    • Std/osets
    • Std/io
    • Std/basic
    • Std/system
    • Std/typed-lists
    • Std/bitsets
    • Std/testing
    • Std/typed-alists
    • Std/stobjs
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
  • Software-verification
  • Math
  • Testing-utilities

• Revappend-nat-to-hex-chars

Revappend-nat-to-hex-chars-aux

Signature

(revappend-nat-to-hex-chars-aux n acc) → *

Arguments

n — Guard (natp n).

Definitions and Theorems

Function: revappend-nat-to-hex-chars-aux

(defun revappend-nat-to-hex-chars-aux (n acc)
 (declare (xargs :guard (natp n)))
 (let ((acl2::__function__ 'revappend-nat-to-hex-chars-aux))
  (declare (ignorable acl2::__function__))
  (mbe
   :logic
   (append (basic-nat-to-hex-chars n) acc)
   :exec
   (if (zp n)
       acc
    (cons
         (hex-digit-to-char (the (unsigned-byte 4)
                                 (logand (the unsigned-byte n) 15)))
         (revappend-nat-to-hex-chars-aux
              (the unsigned-byte
                   (ash (the unsigned-byte n) -4))
              acc))))))