equivalent of fullfile (of matlab) in octave.

[Kharidehal Lakshmi A]

hi,
 I have a problem in converting an octave equivalent code of matlab program.
 In this program , I have to add a path in the program to get another function 
in the same directory.In matlab it is written as
 curdir=pwd;
addpath(fullfile(curdir,'..','Base')); 
addpath(fullfile(curdir,'..','Tools')); 

Could you please tell me what is the Matlab Equivalent of this addpath or 
fullfile.

Thank You.
Lakshmi