Adding in the start of the Math functions.

v3/src/math/Clamp.js

@@ -0,0 +1,26 @@
+/**
+* Force a value within the boundaries by clamping it to the range `min`, `max`.
+*
+* @method Phaser.Math#clamp
+* @param {float} v - The value to be clamped.
+* @param {float} min - The minimum bounds.
+* @param {float} max - The maximum bounds.
+* @return {number} The clamped value.
+*/
+var Clamp = function (v, min, max)
+{
+    if (v < min)
+    {
+        return min;
+    }
+    else if (max < v)
+    {
+        return max;
+    }
+    else
+    {
+        return v;
+    }
+};
+
+module.exports = Clamp;

v3/src/math/IsPowerOfTwo.js

@@ -0,0 +1,14 @@
+/**
+* Checks if the given dimensions make a power of two texture.
+* 
+* @method Phaser.Math#isPowerOfTwo
+* @param {number} width - The width to check.
+* @param {number} height - The height to check.
+* @return {boolean} True if the width and height are a power of two.
+*/
+var IsPowerOfTwo = function (width, height)
+{
+    return (width > 0 && (width & (width - 1)) === 0 && height > 0 && (height & (height - 1)) === 0);
+};
+
+module.exports = isPowerOfTwo;