Numdiff is a little program that can be used to compare putatively similar 
files line by line and field by field, ignoring small numeric differences 
or/and different numeric formats. 

Equivalently, Numdiff is a program with the capability to appropriately 
compare files containing numerical fields (and not only).

% numdiff file1 file2

WWW: http://www.nongnu.org/numdiff/
