Fixed bug (wrong variable name).

src/dtest.m

@@ -50,7 +50,7 @@ if nargin>1 || isempty(tpath)
 end
 
 mex_flag = 0;
-if exist(name1)==3
+if exist(fname)==3
     mex_flag = 1;
 end
 

src/mtest.m

@@ -152,6 +152,6 @@ end
 
 
 function file = append_extension_if_needed(file)
-    if ~isequal(file(end-1,end),'.m')
+    if ~isequal(file(end-1:end),'.m')
         file = [file '.m'];
     end
\ No newline at end of file