diff options
| author | Mark Engelberg <mark.engelberg@gmail.com> | 2009-01-18 07:20:54 +0000 |
|---|---|---|
| committer | Mark Engelberg <mark.engelberg@gmail.com> | 2009-01-18 07:20:54 +0000 |
| commit | ea76882891fe108d918555172c12aea650f5c7f7 (patch) | |
| tree | 9e3298f46da8897029ee882d4b42242d14338020 /src/clojure/contrib/math | |
| parent | 945c38cf2000494b3f7697ab9c12a1ce12c7ab00 (diff) | |
Added math.clj, which contains several math functions that are considered standard in Scheme implementations, adapted to Clojure's numeric tower when relevant, using Java's Math library for doubles.
Also added a math folder, which contains tests.clj (test cases for math.clj).
Diffstat (limited to 'src/clojure/contrib/math')
| -rw-r--r-- | src/clojure/contrib/math/tests.clj | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/clojure/contrib/math/tests.clj b/src/clojure/contrib/math/tests.clj new file mode 100644 index 00000000..19304924 --- /dev/null +++ b/src/clojure/contrib/math/tests.clj @@ -0,0 +1,96 @@ +(ns clojure.contrib.math.tests
+ (:use clojure.contrib.test-is
+ clojure.contrib.math))
+
+(deftest test-expt
+ (are (= _1 _2)
+ (expt 2 3) 8
+ (expt (expt 2 32) 2) (expt 2 64)
+ (expt 4/3 2) 16/9
+ (expt 2 -10) 1/1024
+ (expt 0.5M 2) 0.25M
+ (expt 5 4.2) (Math/pow 5 4.2)
+ (expt 5.3 4) (Math/pow 5.3 4)))
+
+(deftest test-abs
+ (are (= _1 _2)
+ (abs -2) 2
+ (abs 0) 0
+ (abs 5) 5
+ (abs 123456789123456789) 123456789123456789
+ (abs -123456789123456789) 123456789123456789
+ (abs 5/3) 5/3
+ (abs -4/3) 4/3
+ (abs 4.3M) 4.3M
+ (abs -4.3M) 4.3M
+ (abs 2.8) 2.8
+ (abs -2.8) 2.8))
+
+(deftest test-gcd
+ (are (= _1 _2)
+ (gcd 4 3) 1
+ (gcd 24 12) 12
+ (gcd 24 27) 3))
+
+(deftest test-floor
+ (are (= _1 _2)
+ (floor 6) 6
+ (floor -6) -6
+ (floor 123456789123456789) 123456789123456789
+ (floor -123456789123456789) -123456789123456789
+ (floor 4/3) 1
+ (floor -4/3) -2
+ (floor 4.3M) 4
+ (floor -4.3M) -5
+ (floor 4.3) 4.0
+ (floor -4.3) -5.0))
+
+(deftest test-ceil
+ (are (= _1 _2)
+ (ceil 6) 6
+ (ceil -6) -6
+ (ceil 123456789123456789) 123456789123456789
+ (ceil -123456789123456789) -123456789123456789
+ (ceil 4/3) 2
+ (ceil -4/3) -1
+ (ceil 4.3M) 5
+ (ceil -4.3M) -4
+ (ceil 4.3) 5.0
+ (ceil -4.3) -4.0))
+
+(deftest test-round
+ (are (= _1 _2)
+ (round 6) 6
+ (round -6) -6
+ (round 123456789123456789) 123456789123456789
+ (round -123456789123456789) -123456789123456789
+ (round 4/3) 1
+ (round 5/3) 2
+ (round 5/2) 3
+ (round -4/3) -1
+ (round -5/3) -2
+ (round -5/2) -2
+ (round 4.3M) 4
+ (round 4.7M) 5
+ (round -4.3M) -4
+ (round -4.7M) -5
+ (round 4.5M) 5
+ (round -4.5M) -4
+ (round 4.3) 4
+ (round 4.7) 5
+ (round -4.3) -4
+ (round -4.7) -5
+ (round 4.5) 5
+ (round -4.5) -4))
+
+(deftest test-sqrt
+ (are (= _1 _2)
+ (sqrt 9) 3
+ (sqrt 16/9) 4/3
+ (sqrt 0.25M) 0.5M
+ (sqrt 2) (Math/sqrt 2)))
+
+(deftest test-exact-integer-sqrt
+ (are (= _1 _2)
+ (exact-integer-sqrt 15) [3 6]
+ (exact-integer-sqrt (inc (expt 2 64))) [(expt 2 32) 1]))
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