Returns the product of x and y, both long.
Note - uses a primitive operator subject to overflow.
;; demonstrate the the unchecked-multiply function cannot calculate ;; 1 trillion * 10 without throwing an exception user=> (def thous 1000) #'user/thous user=> (def trill (* thous thous thous thous)) #'user/trill user=> (unchecked-multiply trill 10) java.lang.IllegalArgumentException: No matching method found: unchecked_multiply (NO_SOURCE_FILE:0) user=> (* trill 10) 10000000000000 user=>
Source
clojure/core.clj:1161
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(defn unchecked-multiply
"Returns the product of x and y, both long.
Note - uses a primitive operator subject to overflow."
{:inline (fn [x y] `(. clojure.lang.Numbers (unchecked_multiply ~x ~y)))
:added "1.0"}
[x y] (. clojure.lang.Numbers (unchecked_multiply x y)))
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