diff --git a/Lib/typemaps/swigmacros.swg b/Lib/typemaps/swigmacros.swg
index b1a2cfcbf..c9b42facf 100644
--- a/Lib/typemaps/swigmacros.swg
+++ b/Lib/typemaps/swigmacros.swg
@@ -23,29 +23,29 @@
   SWIG provides the following casting macros, which implement the
   corresponding C++ casting operations:
 
-    %const_cast(a, Type)         const_cast<Type >(a)			       
-    %static_cast(a, Type)      	 static_cast<Type >(a)			       
-    %reinterpret_cast(a, Type) 	 reinterpret_cast<Type >(a)		       
-    %numeric_cast(a, Type)     	 static_cast<Type >(a)			       
-    %as_voidptr(a)            	 const_cast<void *>(static_cast<const void *>(a)) 
-    %as_voidptrptr(a)        	 reinterpret_cast<void **>(a)                     
-  
+    %const_cast(a, Type)         const_cast<Type >(a)
+    %static_cast(a, Type)      	 static_cast<Type >(a)
+    %reinterpret_cast(a, Type) 	 reinterpret_cast<Type >(a)
+    %numeric_cast(a, Type)     	 static_cast<Type >(a)
+    %as_voidptr(a)            	 const_cast<void *>(static_cast<const void *>(a))
+    %as_voidptrptr(a)        	 reinterpret_cast<void **>(a)
+
   or their C unsafe versions. In C++ we use the safe version unless
   SWIG_NO_CPLUSPLUS_CAST is defined (usually via the -nocppcast swig flag).
 
 
   Memory allocation:
   ------------------
-  
+
   These allocation/freeing macros are safe to use in C or C++ and
   dispatch the proper new/delete/delete[] or free/malloc calls as
   needed.
-  
+
     %new_instance(Type)             Allocate a new instance of given Type
     %new_copy(value,Type)           Allocate and initialize a new instance with 'value'
     %new_array(size,Type)           Allocate a new array with given size and Type
     %new_copy_array(cptr,size,Type) Allocate and initialize a new array from 'cptr'
-    %delete(cptr)                   Delete an instance  
+    %delete(cptr)                   Delete an instance
     %delete_array(cptr)             Delete an array
 
 
@@ -54,13 +54,13 @@
 
     %formacro(Macro, Args...) or %formacro_1(Macro, Args...)
        for i in Args
-       do 
+       do
           Macro($i)
        done
 
     %formacro_2(Macro2, Args...)
        for i,j in Args
-       do 
+       do
           Macro2($i, $j)
        done
 
@@ -71,12 +71,12 @@
      %mark_flag(flag)
        flag := True
 
-     %evalif(flag,expr) 
+     %evalif(flag,expr)
        if flag; then
          expr
        fi
 
-     %evalif_2(flag1 flag2,expr) 
+     %evalif_2(flag1 flag2,expr)
        if flag1 and flag2; then
          expr
        fi
@@ -84,7 +84,7 @@
 
 */
 /* -----------------------------------------------------------------------------
- * Basic preprocessor macros 
+ * Basic preprocessor macros
  * ----------------------------------------------------------------------------- */
 
 #define %arg(Arg...)        Arg
@@ -115,7 +115,7 @@ nocppval
 %define_as(SWIGVERSION,  SWIG_VERSION)
 %#define SWIG_VERSION SWIGVERSION
 }
-#endif  
+#endif
 
 
 
@@ -153,10 +153,10 @@ nocppval
 
 
 /* -----------------------------------------------------------------------------
- * Allocating/freeing elements 
+ * Allocating/freeing elements
  * ----------------------------------------------------------------------------- */
 
-#if defined(__cplusplus) 
+#if defined(__cplusplus)
 # define %new_instance(Type...)             (new Type)
 # define %new_copy(val,Type...)             (new Type(%static_cast(val, const Type&)))
 # define %new_array(size,Type...)           (new Type[size])
@@ -184,7 +184,7 @@ nocppval
 
 
 /* -----------------------------------------------------------------------------
- * Auxiliary loop macros 
+ * Auxiliary loop macros
  * ----------------------------------------------------------------------------- */
 
 
@@ -213,10 +213,10 @@ nocppval
  * SWIG flags
  * ----------------------------------------------------------------------------- */
 
-/* 
+/*
   mark a flag, ie, define a macro name but ignore it in
-  the interface. 
-  
+  the interface.
+
   the flag can be later used with %evalif
 */
 
@@ -224,16 +224,16 @@ nocppval
 
 
 /*
-  %evalif and %evalif_2 are use to evaluate or process 
+  %evalif and %evalif_2 are use to evaluate or process
   an expression if the given predicate is 'true' (1).
 */
-%define %_evalif(_x,_expr) 
+%define %_evalif(_x,_expr)
 #if _x == 1
 _expr
 #endif
 %enddef
 
-%define %_evalif_2(_x,_y,_expr) 
+%define %_evalif_2(_x,_y,_expr)
 #if _x == 1 && _y == 1
 _expr
 #endif