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/
PR: ports/104525
Submitted by: Cheng-Lung Sung <clsung at FreeBSD.org>