@c -*-texinfo-*-
@c This is part of the GNU Emacs Lisp Reference Manual.
-@c Copyright (C) 1999, 2001-2012 Free Software Foundation, Inc.
+@c Copyright (C) 1999, 2001-2015 Free Software Foundation, Inc.
@c See the file elisp.texi for copying conditions.
@node Hash Tables
@chapter Hash Tables
@item eql
Keys which are numbers are ``the same'' if they are @code{equal}, that
is, if they are equal in value and either both are integers or both
-are floating point numbers; otherwise, two distinct objects are never
+are floating point; otherwise, two distinct objects are never
``the same''.
@item eq
If @var{rehash-size} is an integer, it should be positive, and the hash
table grows by adding that much to the nominal size. If
-@var{rehash-size} is a floating point number, it had better be greater
+@var{rehash-size} is floating point, it had better be greater
than 1, and the hash table grows by multiplying the old size by that
number.
@item :rehash-threshold @var{threshold}
This specifies the criterion for when the hash table is ``full'' (so
it should be made larger). The value, @var{threshold}, should be a
-positive floating point number, no greater than 1. The hash table is
+positive floating-point number, no greater than 1. The hash table is
``full'' whenever the actual number of entries exceeds this fraction
of the nominal size. The default for @var{threshold} is 0.8.
@end table
@node Hash Access
@section Hash Table Access
+@cindex accessing hash tables
+@cindex hash table access
This section describes the functions for accessing and storing
associations in a hash table. In general, any Lisp object can be used
The function @var{hash-fn} should accept one argument, a key, and return
an integer that is the ``hash code'' of that key. For good results, the
-function should use the whole range of integer values for hash codes,
+function should use the whole range of integers for hash codes,
including negative integers.
The specified functions are stored in the property list of @var{name}
@example
(defun case-fold-string= (a b)
- (compare-strings a nil nil b nil nil t))
+ (eq t (compare-strings a nil nil b nil nil t)))
(defun case-fold-string-hash (a)
(sxhash (upcase a)))