swenson/sort — pull request #11 by vladracer (2013-05-12 23:18:09+00:00)
Title: Add #ifndef to sort.h to have capability redefine this behaviour in your...

... code

Now you can redefine swap function, but it's optional.
It's useful fot tasks like this:
sort two dimensional arrays by first and second column:
x1 y1 x2 y2:

30 20 10 40
10 50 40 30
50 60 20 30
sort them like this:

10 50 40 30
30 20 10 40
50 60 20 30