### hash-table-rehash-size (Function)

##### Syntax:

— Function:

**hash-table-rehash-size**` hash-table `→` rehash-size`
##### Arguments and Values:

`hash-table`—a *hash table*.

`rehash-size`—a *real* of *type* `(or (integer 1 *) (float (1.0) *))`

.

##### Description:

Returns the current rehash size of `hash-table`,
suitable for use in a call to `make-hash-table`

in order to produce a *hash table*
with state corresponding to the current state of the `hash-table`.

##### Examples:

(setq table (make-hash-table :size 100 :rehash-size 1.4))
→ #<HASH-TABLE EQL 0/100 2556371>
(hash-table-rehash-size table) → 1.4

##### Exceptional Situations:

Should signal an error of *type* `type-error`

if `hash-table` is not a *hash table*.

##### See Also:

make-hash-table,
hash-table-rehash-threshold

##### Notes:

If the hash table was created with an *integer* rehash size,
the result is an *integer*,
indicating that the rate of growth of the `hash-table` when rehashed
is intended to be additive;
otherwise,
the result is a *float*,
indicating that the rate of growth of the `hash-table` when rehashed
is intended to be multiplicative.
However, this value is only advice to the *implementation*;
the actual amount by which the `hash-table` will grow upon rehash is
*implementation-dependent*.