### logtest (Function)

##### Syntax:

— Function:

**logtest**` integer-1 integer-2 `→` generalized-boolean`
##### Arguments and Values:

`integer-1`—an *integer*.

`integer-2`—an *integer*.

`generalized-boolean`—a *generalized boolean*.

##### Description:

Returns *true* if any of the bits designated by the 1's
in `integer-1` is 1 in `integer-2`;
otherwise it is *false*.
`integer-1` and `integer-2` are treated as if they were binary.

Negative `integer-1` and `integer-2` are treated as if
they were represented in two's-complement binary.

##### Examples:

(logtest 1 7) → *true*
(logtest 1 2) → *false*
(logtest -2 -1) → *true*
(logtest 0 -1) → *false*

##### Exceptional Situations:

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

if `integer-1` is not an *integer*.
Should signal an error of *type* `type-error`

if `integer-2` is not an *integer*.

##### Notes:

(logtest `x` `y`) ≡ (not (zerop (logand `x` `y`)))