Add orx-gradient-descent

orx-gradient-descent/src/test/kotlin/TestDot.kt

@@ -0,0 +1,30 @@
+import org.amshove.kluent.`should be equal to`
+import org.spekframework.spek2.Spek
+import org.spekframework.spek2.style.specification.describe
+
+object TestDot : Spek({
+    describe("some vectors") {
+        val a = doubleArrayOf(10.0)
+        val b = doubleArrayOf(4.0)
+
+        dot(a,b) `should be equal to` 40.0
+
+    }
+    describe("a matrix and a vector") {
+        val a = arrayOf(doubleArrayOf(10.0))
+        val b = doubleArrayOf(1.0)
+
+        val d = dot(a,b)
+        d[0] `should be equal to` 10.0
+
+    }
+    describe("a matrix and a vector") {
+        val a = arrayOf(doubleArrayOf(1.0))
+        val b = doubleArrayOf(19.99999999995339)
+
+        val d = dot(a,b)
+        d[0] `should be equal to` 19.99999999995339
+
+    }
+
+})