#### 12.2.30 evenp, oddp [Function] ¶

`evenp` integer ⇒ generalized-boolean

`oddp` integer ⇒ generalized-boolean

#### Arguments and Values:: ¶

integer—an integer.

generalized-boolean—a generalized boolean.

#### Description:: ¶

evenp returns true if integer is even (divisible by two); otherwise, returns false.

oddp returns true if integer is odd (not divisible by two); otherwise, returns false.

#### Examples:: ¶

     (evenp 0) ⇒  true
     (oddp 10000000000000000000000) ⇒  false
     (oddp -1) ⇒  true

#### Exceptional Situations:: ¶

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

#### Notes:: ¶

     (evenp integer) ≡ (not (oddp integer))
     (oddp integer)  ≡ (not (evenp integer))