129 lines
3.3 KiB
Clojure
129 lines
3.3 KiB
Clojure
(ns clojure.math.test-numeric-tower
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(:use clojure.test
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clojure.math.numeric-tower))
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(deftest test-expt
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(are [x y] (= x y)
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(expt 2 3) 8
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(expt (expt 2 16) 2) (expt 2 32)
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(expt 4/3 2) 16/9
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(expt 2 -10) 1/1024
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(expt 0.5M 2) 0.25M
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(expt 5 4.2) (Math/pow 5 4.2)
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(expt 5.3 4) (Math/pow 5.3 4)
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(expt 5.3 4) (Math/pow 5.3 4)
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(expt 2 0) 1
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(expt (java.math.BigInteger. "4") 0) (java.math.BigInteger. "1")
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(expt 4M 0) 1M
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(expt 8M 1) 8M
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(expt 16M 16) 18446744073709551616M))
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(when-available clojure.lang.BigInt
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(deftest test-expt-bigint
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(are [x y] (= x y)
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(expt (bigint 4) 0) (bigint 1))))
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(deftest test-abs
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(are [x y] (= x y)
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(abs -2) 2
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(abs 0) 0
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(abs 5) 5
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(abs 123456789123456789) 123456789123456789
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(abs -123456789123456789) 123456789123456789
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(abs 5/3) 5/3
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(abs -4/3) 4/3
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(abs 4.3M) 4.3M
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(abs -4.3M) 4.3M
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(abs 2.8) 2.8
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(abs -2.8) 2.8))
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(deftest test-gcd
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(are [x y] (= x y)
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(gcd 4 3) 1
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(gcd 24 12) 12
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(gcd 24 27) 3
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(gcd 1 0) 1
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(gcd 0 1) 1
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(gcd 0 0) 0)
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(is (thrown? IllegalArgumentException (gcd nil 0)))
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(is (thrown? IllegalArgumentException (gcd 0 nil)))
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(is (thrown? IllegalArgumentException (gcd 7.0 0))))
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(deftest test-lcm
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(are [x y] (= x y)
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(lcm 2 3) 6
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(lcm 3 2) 6
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(lcm -2 3) 6
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(lcm 2 -3) 6
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(lcm -2 -3) 6
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(lcm 4 10) 20
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(lcm 1 0) 0
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(lcm 0 1) 0
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(lcm 0 0) 0)
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(is (thrown? IllegalArgumentException (lcm nil 0)))
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(is (thrown? IllegalArgumentException (lcm 0 nil)))
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(is (thrown? IllegalArgumentException (lcm 7.0 0))))
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(deftest test-floor
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(are [x y] (== x y)
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(floor 6) 6
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(floor -6) -6
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(floor 123456789123456789) 123456789123456789
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(floor -123456789123456789) -123456789123456789
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(floor 4/3) 1
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(floor -4/3) -2
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(floor 4.3M) 4
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(floor -4.3M) -5
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(floor 4.3) 4.0
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(floor -4.3) -5.0))
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(deftest test-ceil
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(are [x y] (== x y)
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(ceil 6) 6
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(ceil -6) -6
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(ceil 123456789123456789) 123456789123456789
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(ceil -123456789123456789) -123456789123456789
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(ceil 4/3) 2
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(ceil -4/3) -1
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(ceil 4.3M) 5
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(ceil -4.3M) -4
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(ceil 4.3) 5.0
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(ceil -4.3) -4.0))
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(deftest test-round
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(are [x y] (== x y)
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(round 6) 6
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(round -6) -6
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(round 123456789123456789) 123456789123456789
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(round -123456789123456789) -123456789123456789
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(round 4/3) 1
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(round 5/3) 2
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(round 5/2) 3
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(round -4/3) -1
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(round -5/3) -2
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(round -5/2) -2
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(round 4.3M) 4
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(round 4.7M) 5
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(round -4.3M) -4
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(round -4.7M) -5
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(round 4.5M) 5
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(round -4.5M) -4
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(round 4.3) 4
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(round 4.7) 5
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(round -4.3) -4
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(round -4.7) -5
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(round 4.5) 5
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(round -4.5) -4))
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(deftest test-sqrt
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(are [x y] (= x y)
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(sqrt 9) 3
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(sqrt 16/9) 4/3
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(sqrt 0.25M) 0.5M
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(sqrt 2) (Math/sqrt 2)))
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(deftest test-exact-integer-sqrt
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(are [x y] (= x y)
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(exact-integer-sqrt 15) [3 6]
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(exact-integer-sqrt (inc (expt 2 32))) [(expt 2 16) 1]
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(exact-integer-sqrt 1000000000000) [1000000 0]))
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