store/[org.clojure/clojure "1.9.0"] clj::clojure.core/neg?

Official Documentation

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Arities
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   [num]

Docstring
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  Returns true if num is less than zero, else false

Source

(defn neg?
  "Returns true if num is less than zero, else false"
  {
   :inline (fn [num] `(. clojure.lang.Numbers (isNeg ~num)))
   :added "1.0"}
  [num] (. clojure.lang.Numbers (isNeg num)))

Example 1

Edit
(neg? -1)
;; => true

(neg? 0)
;; => false

(neg? 1)
;; => false

Uses on crossclj