Sqrt completed.

Paris · Oct 23, 2010 · dc48d10 · dc48d10
1 parent 315dab2
commit dc48d10
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Showing 3 changed files with 15 additions and 6 deletions.
diff --git a/IronAHK/Site/docs/developing/status/index.html b/IronAHK/Site/docs/developing/status/index.html
@@ -225,7 +225,7 @@
 ["SplashTextOff", false, false, false, false, ""],
 ["SplashTextOn", false, false, false, false, ""],
 ["SplitPath", false, false, false, false, ""],
-["Sqrt", false, false, false, false, ""],
+["Sqrt", true, true, true, true, ""],
 ["StatusBarGetText", false, false, false, false, ""],
 ["StatusBarWait", false, false, false, false, ""],
 ["StringCaseSense", false, false, false, false, ""],

diff --git a/Rusty/Core/Math.cs b/Rusty/Core/Math.cs
@@ -228,13 +228,13 @@ public static double Sin(double n)
         }
 
         /// <summary>
-        /// Returns the square root of Number. The result is formatted as floating point. If Number is negative, the function yields a blank result (empty string).
+        /// Returns the square root of a specified number.
         /// </summary>
-        /// <param name="Number"></param>
-        /// <returns></returns>
-        public static decimal Sqrt(decimal Number)
+        /// <param name="n">A number.</param>
+        /// <returns>The positive square root of <paramref name="n"/>.</returns>
+        public static double Sqrt(double n)
         {
-            return (decimal)Math.Sqrt((double)Number);
+            return n < 0 ? 0 : Math.Sqrt(n);
         }
 
         /// <summary>

diff --git a/Tests/Rusty/Math.cs b/Tests/Rusty/Math.cs
@@ -189,5 +189,14 @@ public void Sin()
                 Assert.AreEqual(Math.Sin(v), Core.Sin(v));
             }
         }
+
+        [Test, Category("Math")]
+        public void Sqrt()
+        {
+            foreach (var n in new[] { 0, 1, 4, 9, 36, 12769, 8 })
+                Assert.AreEqual(Math.Sqrt(n), Core.Sqrt(n));
+
+            Assert.AreEqual(0, Core.Sqrt(-1));
+        }
     }
 }