Search-engine friendly clone of the
ACL2 documentation
.
Top
Documentation
Books
Recursion-and-induction
Boolean-reasoning
Debugging
Projects
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
Character-listp
Characterp
Coerce
Standard-char-p
Digit-char-p
Code-char
Char-code
Char
Char-upcase
Char-downcase
Explode-nonnegative-integer
Explode-atom
Upper-case-p
Lower-case-p
Char-equal
Alpha-char-p
Digit-to-char
Char<
Char>=
Make-character-list
Char>
Char<=
Standard-char-listp
Character-alistp
Standard-char-p+
Chars-upcase-gen
Chars-downcase-gen
Char-upcase-gen
Char-downcase-gen
Time$
Loop$-primer
Fast-alists
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
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
Characters
ACL2-built-ins
Characterp
Recognizer for
characters
(
characterp
x)
is true if and only if
x
is a character.