From 16dd3512553a06306a69a2f5da1595fc762112b3 Mon Sep 17 00:00:00 2001
From: the_fiddler <the_fiddler@ebc5dd9b-fb1d-0410-b6f8-d24c324e9604>
Date: Sun, 19 Jul 2009 20:58:35 +0000
Subject: [PATCH] Added NextPowerOfTwo float and double overloads.

---
 Source/OpenTK/Math/Functions.cs | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/Source/OpenTK/Math/Functions.cs b/Source/OpenTK/Math/Functions.cs
index 00dd9396..5c9f3f22 100644
--- a/Source/OpenTK/Math/Functions.cs
+++ b/Source/OpenTK/Math/Functions.cs
@@ -48,7 +48,38 @@ namespace OpenTK
 
         #endregion
 
-        /// <summary>        /// Calculates the factorial of a given natural number.
+        #region public static int NextPowerOfTwo(int n)
+
+        /// <summary>
+        /// Returns the next power of two that is larger than the specified number.
+        /// </summary>
+        /// <param name="n">The specified number.</param>
+        /// <returns>The next power of two.</returns>
+        public static float NextPowerOfTwo(float n)
+        {
+            if (n < 0) throw new ArgumentOutOfRangeException("n", "Must be positive.");
+            return (float)System.Math.Pow(2, System.Math.Ceiling(System.Math.Log((double)n, 2)));
+        }
+
+        #endregion
+
+
+        #region public static int NextPowerOfTwo(int n)
+
+        /// <summary>
+        /// Returns the next power of two that is larger than the specified number.
+        /// </summary>
+        /// <param name="n">The specified number.</param>
+        /// <returns>The next power of two.</returns>
+        public static double NextPowerOfTwo(double n)
+        {
+            if (n < 0) throw new ArgumentOutOfRangeException("n", "Must be positive.");
+            return System.Math.Pow(2, System.Math.Ceiling(System.Math.Log((double)n, 2)));
+        }
+
+        #endregion
+
+        /// <summary>Calculates the factorial of a given natural number.
         /// </summary>
         /// <param name="n">The number.</param>
         /// <returns>n!</returns>