Simplified Common Lisp reference
INDEX
Mathematics, Arithmetics, Logic and Comparisons
nil t and or + eq - eql not * 1+ equalp equal > exp = 1- <= mod incf decf < >= / random max expt ceiling sqrt isqrt sin min logior floor round cos logand /=
Conses, Lists and related functions
first list rest cons list-length consp second cdr mapcar member car push pop null last pushnew assoc cddr butlast append getf set-difference mapcan listp
Sequences (Lists, Strings) and Arrays
aref string position length make-array map make-sequence vector-push-extend vector-pop reverse elt vector subseq concatenate string-upcase reduce copy-seq map-into some search find vector-push string-downcase
Symbol, Characters, Hash, Structure, Objects and Conversions
coerce intern gethash gensym symbolp defstruct make-hash-table char-name char-code digit-char-p
Input and output
format write-string read make-string-output-stream get-output-stream-string read-line read-char
Functions, Evaluation, Flow Control, Definitions and Syntax
quote let cond if defun setf lambda when setq loop function defmacro progn declare error unless let* do block defparameter funcall apply case dolist return-from defvar
Full documentation (HyperSpec)