diff --git a/Source/OpenTK/Math/Vector2.cs b/Source/OpenTK/Math/Vector2.cs
index 396c5166..ebfc8101 100644
--- a/Source/OpenTK/Math/Vector2.cs
+++ b/Source/OpenTK/Math/Vector2.cs
@@ -873,14 +873,14 @@ namespace OpenTK
             result = a; // copy
 
             Vector2 temp = b; // copy
-            temp.Sub(ref a);
-            temp.Mult(u);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, u, out temp);
+            Add(ref result, ref temp, out result);
 
             temp = c; // copy
-            temp.Sub(ref a);
-            temp.Mult(v);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, v, out temp);
+            Add(ref result, ref temp, out result);
         }
 
         #endregion
diff --git a/Source/OpenTK/Math/Vector2d.cs b/Source/OpenTK/Math/Vector2d.cs
index 1e48dfe6..48794668 100644
--- a/Source/OpenTK/Math/Vector2d.cs
+++ b/Source/OpenTK/Math/Vector2d.cs
@@ -756,19 +756,19 @@ namespace OpenTK
         /// <param name="u">First Barycentric Coordinate.</param>
         /// <param name="v">Second Barycentric Coordinate.</param>
         /// <param name="result">Output Vector. a when u=v=0, b when u=1,v=0, c when u=0,v=1, and a linear combination of a,b,c otherwise</param>
-        public static void BaryCentric(ref Vector2d a, ref Vector2d b, ref Vector2d c, float u, float v, out Vector2d result)
+        public static void BaryCentric(ref Vector2d a, ref Vector2d b, ref Vector2d c, double u, double v, out Vector2d result)
         {
             result = a; // copy
 
             Vector2d temp = b; // copy
-            temp.Sub(ref a);
-            temp.Mult(u);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, u, out temp);
+            Add(ref result, ref temp, out result);
 
             temp = c; // copy
-            temp.Sub(ref a);
-            temp.Mult(v);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, v, out temp);
+            Add(ref result, ref temp, out result);
         }
 
         #endregion
diff --git a/Source/OpenTK/Math/Vector3.cs b/Source/OpenTK/Math/Vector3.cs
index be0f4842..0eece2c2 100644
--- a/Source/OpenTK/Math/Vector3.cs
+++ b/Source/OpenTK/Math/Vector3.cs
@@ -919,14 +919,14 @@ namespace OpenTK
             result = a; // copy
 
             Vector3 temp = b; // copy
-            temp.Sub(ref a);
-            temp.Mult(u);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, u, out temp);
+            Add(ref result, ref temp, out result);
 
             temp = c; // copy
-            temp.Sub(ref a);
-            temp.Mult(v);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, v, out temp);
+            Add(ref result, ref temp, out result);
         }
 
         #endregion
diff --git a/Source/OpenTK/Math/Vector3d.cs b/Source/OpenTK/Math/Vector3d.cs
index 86232371..2f44bfcf 100644
--- a/Source/OpenTK/Math/Vector3d.cs
+++ b/Source/OpenTK/Math/Vector3d.cs
@@ -913,19 +913,19 @@ namespace OpenTK
         /// <param name="u">First Barycentric Coordinate.</param>
         /// <param name="v">Second Barycentric Coordinate.</param>
         /// <param name="result">Output Vector. a when u=v=0, b when u=1,v=0, c when u=0,v=1, and a linear combination of a,b,c otherwise</param>
-        public static void BaryCentric(ref Vector3d a, ref Vector3d b, ref Vector3d c, float u, float v, out Vector3d result)
+        public static void BaryCentric(ref Vector3d a, ref Vector3d b, ref Vector3d c, double u, double v, out Vector3d result)
         {
             result = a; // copy
 
             Vector3d temp = b; // copy
-            temp.Sub(ref a);
-            temp.Mult(u);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, u, out temp);
+            Add(ref result, ref temp, out result);
 
             temp = c; // copy
-            temp.Sub(ref a);
-            temp.Mult(v);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, v, out temp);
+            Add(ref result, ref temp, out result);
         }
 
         #endregion
diff --git a/Source/OpenTK/Math/Vector4.cs b/Source/OpenTK/Math/Vector4.cs
index a8295b4e..59f13236 100644
--- a/Source/OpenTK/Math/Vector4.cs
+++ b/Source/OpenTK/Math/Vector4.cs
@@ -904,14 +904,14 @@ namespace OpenTK
             result = a; // copy
 
             Vector4 temp = b; // copy
-            temp.Sub(ref a);
-            temp.Mult(u);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, u, out temp);
+            Add(ref result, ref temp, out result);
 
             temp = c; // copy
-            temp.Sub(ref a);
-            temp.Mult(v);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, v, out temp);
+            Add(ref result, ref temp, out result);
         }
 
         #endregion
diff --git a/Source/OpenTK/Math/Vector4d.cs b/Source/OpenTK/Math/Vector4d.cs
index 5264844f..d98fc2d2 100644
--- a/Source/OpenTK/Math/Vector4d.cs
+++ b/Source/OpenTK/Math/Vector4d.cs
@@ -902,19 +902,19 @@ namespace OpenTK
         /// <param name="u">First Barycentric Coordinate.</param>
         /// <param name="v">Second Barycentric Coordinate.</param>
         /// <param name="result">Output Vector. a when u=v=0, b when u=1,v=0, c when u=0,v=1, and a linear combination of a,b,c otherwise</param>
-        public static void BaryCentric(ref Vector4d a, ref Vector4d b, ref Vector4d c, float u, float v, out Vector4d result)
+        public static void BaryCentric(ref Vector4d a, ref Vector4d b, ref Vector4d c, double u, double v, out Vector4d result)
         {
             result = a; // copy
 
             Vector4d temp = b; // copy
-            temp.Sub(ref a);
-            temp.Mult(u);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, u, out temp);
+            Add(ref result, ref temp, out result);
 
             temp = c; // copy
-            temp.Sub(ref a);
-            temp.Mult(v);
-            result.Add(ref temp);
+            Subtract(ref temp, ref a, out temp);
+            Multiply(ref temp, v, out temp);
+            Add(ref result, ref temp, out result);
         }
 
         #endregion