#### 12.2.18 zerop [Function] ¶

`zerop` number ⇒ generalized-boolean

#### Pronunciation:: ¶

pronounced ’z\=e (, )r\=o(, )p\=e

#### Arguments and Values:: ¶

number—a number.

generalized-boolean—a generalized boolean.

#### Description:: ¶

Returns true if number is zero (integer, float, or complex); otherwise, returns false.

Regardless of whether an implementation provides distinct representations for positive and negative floating-point zeros, `(zerop -0.0)` always returns true.

#### Examples:: ¶

     (zerop 0) ⇒  true
     (zerop 1) ⇒  false
     (zerop -0.0) ⇒  true
     (zerop 0/100) ⇒  true
     (zerop #c(0 0.0)) ⇒  true

#### Exceptional Situations:: ¶

Should signal an error of type type-error if number is not a number.

#### Notes:: ¶

     (zerop number) ≡ (= number 0)