Add Root Function and Product Function

MathKit/MPRootFunctionLayout.h

@@ -0,0 +1,42 @@
+//
+//  MPRootFunctionLayout.h
+//  MathPad
+//
+//  Created by Kim Wittenburg on 11.01.15.
+//  Copyright (c) 2015 Kim Wittenburg. All rights reserved.
+//
+
+#import "MPFunctionLayout.h"
+
+
+/*!
+ @header
+ This file contains the <code>MPRootFunctionLayout</code> class.
+ */
+
+
+
+@class MPRootFunctionLayout, MPRootFunction;
+
+
+/*!
+    @class      MPRootFunctionLayout
+    @abstract   A root function layout displays a <code>@link
+                //apple_ref/occ/cl/MPRootFunction@/link</code>.
+ 
+    @discussion A root function is displayed in a very special way. In a way it
+                can be described as an exponent at the left, a "V" in the middle
+                and the expression that is to be rooted at the right with a bar
+                over it.
+ */
+@interface MPRootFunctionLayout : MPFunctionLayout
+
+/*!
+    @method     rootFunction
+    @abstract   Returns the <code>@link
+                //apple_ref/occ/cl/MPRootFunction@/link</code> represented by the
+                receiver.
+ */
+- (MPRootFunction *)rootFunction;
+
+@end