MuPAD Pro Computing Essentials - Examples 

Example 5.7 User defined library of MuPAD procedures

In this example I show the simplest method how to build libraries of MuPAD procedures. This method can be quite useful while preparing teaching materials.   

Let us start by developing a notebook with a few procedures. In order to make it shorter, I will only use two procedures. However, you can develop as many of them as you wish. Here is my notebook:

• average:=proc()
  local n, i, result;
  begin
     n:=args(0);
     result := 0;
     for i from 1 to n do
        result := result + args(i)
     end;
     result := result/n;
   return(result)
  end: 
    
• squares := proc()
  local n, i, result;
  begin
     n:=args(0);
     result := 0;
     for i from 1 to n do
        result := result + args(i)^2
     end;
     return(result)
  end:   

Now is time to point out a place where you will save your library. Before executing next  two commands create in MuPAD root directory a new  folder "userlib".  Now you can execute the following two commands. 

• WRITEPATH := "userlib": 
  write("myfunctions.mb", average, squares)

Next time, in order to load the library myfunctions.mb you shall execute these two commands.

• READPATH := "userlib":
  read("myfunctions.mb"):

Now you can use any procedure that was defined in your library.    

You can place your user libraries in any place of your computer or a school network. In order to do this, in commands WRITEPATH and READPATH you shall specify absolute path to this place, for example:

• READPATH := "h:\\userlib":
• WRITEPATH := "h:\\userlib":
  

Note -- on Windows you need to use  "\\"  instead of "\". This is all.